Achilles tendinopathy is a common cause of disability. Despite the economic and social relevance of the problem, the causes and mechanisms of Achilles tendinopathy remain unclear. Tendon vascularity, gastrocnemius-soleus dysfunction, age, gender, body weight and height, pes cavus, and lateral ankle instability are considered common intrinsic factors. The essence of Achilles tendinopathy is a failed healing response, with haphazard proliferation of tenocytes, some evidence of degeneration in tendon cells and disruption of collagen fibres, and subsequent increase in non-collagenous matrix. Tendinopathic tendons have an increased rate of matrix remodelling, leading to a mechanically less stable tendon which is more susceptible to damage. The diagnosis of Achilles tendinopathy is mainly based on a careful history and detailed clinical examination. The latter remains the best diagnostic tool. Over the past few years, various new therapeutic options have been proposed for the management of Achilles tendinopathy. Despite the morbidity associated with Achilles tendinopathy, many of the therapeutic options described and in common use are far from scientifically based. New minimally invasive techniques of stripping of neovessels from the Kager's triangle of the tendo Achillis have been described, and seem to allow faster recovery and accelerated return to sports, rather than open surgery. A genetic component has been implicated in tendinopathies of the Achilles tendon, but these studies are still at their infancy.

The best management for acute rupture of the Achilles tendon remains controversial. An unacceptably high re-rupture rate following conservative management has been quoted as a reason for surgical management, however, many of these studies do not stand up to critical scrutiny. Since 1989 I have personally treated over 1600 consecutive patients with acute rupture of the tendo-achilles using a conservative functional management protocol. This protocol was developed in the light of experience over a number of years. I will present an independent review of 1044 consecutive patients presenting to my tendo-achilles clinic between 1996 and 2008. After examination, 975 patients were found to have an acute tendon rupture, the rest being gastrocnemius muscle tears, painful Achilles tendonopathy or mis-referrals. Of these 975 patients 29 were late presenters in whom the tendon ends did not approximate well on plantar flexion. These patients were therefore treated surgically. One patient was too obese to be included in the standard protocol, although he was still treated conservatively. With a minimum follow up of two years, the overall re-rupture rate was 2.9%. The re-rupture rate using this management protocol is similar to or better than the published operative re-rupture rates. The protocol, complications and outcome will be discussed and I recommend a well defined and tested non operative functional management protocol for treatment of acute tendo-achilles rupture. This protocol is suitable for all ages including those with significant sporting demands. It is essential that patients have assessment and follow up carried out by a senior and experienced surgeon.

Arthrodesis of both the ankle and the hindfoot has been discussed in the literature since the early part of the last century. Techniques have been modified substantially since these early discussions, though complications remain a frustrating element in patient management. Early procedures relied on molded plaster casts to hold fixation in corrected positions. Successful outcomes were hampered by loss of reduction in these casts and subsequent malunions. In addition, motion within these casts lead to a high rate of nonunion between the opposed bony surfaces. The era of internal fixation allowed compression across arthrodesis sites, enhancing union but creating a host of technical errors leading to unsatisfying results.

Malunion is also seen in post-traumatic situations. In particular, non-operative management of calcaneus fracture (or other hindfoot fractures) leads to not only arthritis of the involved joint surfaces, but malunion complicating successful fusion. Fusion in-situ leads to a high level of patient dissatisfaction, leading surgeons to challenging deformity correction while trying to achieve successful arthrodesis in compromised joints.

This lecture will focus on two types of malunion, one iatrogenic, one acquired. Revision triple arthrodesis (iatrogenic) can range from simple to challenging. A variety of studies document patient dissatisfaction following correction via this technique, ranging from Graves and Mann (1993) where the highest dissatisfaction rate was in highest in valgus malunion, to Sangeorzan and Hansen (1993), who found a 9% failure rate, most with varus malunion. The precarious balance required to create a plantigrade foot via triple arthrodesis with pre-existing deformity leaves even the most skilled surgeon challenged. As such, this component of the lecture will focus on recognition and correction of malunion based on a structured algorithmic approach we first presented in 1997. This algorithm is based on recognition of the apex of the deformity, and creating osteotomies to achieve balance.

We reviewed 28 patients who returned for follow-up examination who received treatment through this algorithm and found a statistically significant improvement in pre- and postoperative AOFAS ankle/hindfoot score, from an average of 31 points preoperatively to 59 postoperatively (p<0.01). All patients united, and all stated they would undergo the revision procedure again. Comparisons of pre- and postoperative shoe wear modification demonstrated a statistically significant improvement (p=0.01). Preoperatively, 20 patients required restrictive devices such as ankle foot orthoses and orthopaedic shoes. Postoperatively, only 1 patient required such a restrictive device. In fact, 17 patients required no modifications to their shoe wear at all.

The second component to this lecture will assess acquired hindfoot deformity, from malunion created by calcaneus fractures. A 2005 JBJS study by Brauer, et.al. found operative management resulted in a lower rate of subtalar arthrodesis with a shorter time off work compared to non-operative management. Removing the expense of time off work still netted a $2800 savings for operative management over non-operative management. Sanders echoed these thoughts in a JBJS 2006 paper, suggesting patients with displaced intra-articular calcaneal fractures may benefit from acute operative treatment given the difficulty encountered in restoring the calcaneal height and the talo-calcaneal relationship in symptomatic calcaneal fracture malunion. Thus, with these challenges in mind, the goal of this component of the lecture is to introduce methods to achieve balance and union with calcaneus fracture malunion. Vertically oriented multiplanar calcaneal osteotomy may assist the surgeon in avoiding the higher non-union rate associated with bone-block arthrodesis procedures. In this vein, the challenges associated with bone block subtalar arthrodesis will be explored.

Osteoarthritis (OA) is a disease of the joints stemming from a variety of factors, including joint injuries and abnormally high mechanical loading. Although the traditional treatment alternatives for end-stage OA are arthroplasty in the case of the hip and knee, and arthroplasty or arthrodesis in the case of the ankle, these options are not ideal for younger, more active patients. For these patients, joint prostheses would be expected to fail relatively quickly, and ankle fusion is not amenable to maintaining their active lifestyles. In these cases, joint distraction has attracted investigative attention as a conservative OA treatment for younger patients^9-14.

Based on the principle that decreasing the mechanical load on cartilage stimulates its regeneration¹⁵, distraction treatment calls for reduced loading of the joint during a period of typically 3 months, during which time the load customarily passing through the joint is taken up by an external fixator spanning the joint . By mounting the fixator components to the bone on each side of the joint, and then lengthening the rods connecting the proximal and distal portions of the fixator, the joint is distracted. Assuming the fixation is appropriately stiff, any load passes through the fixator instead of the joint, and the two articular surfaces will not be allowed to contact each other under physiologic loading. The exact mechanisms leading to cartilage regeneration during distraction are not yet understood.

A possible negative consequence of joint fixation is cartilage degeneration due to immobilization during the treatment. It has been shown by Haapala et al. and others that long-term immobilization can be detrimental to articular cartilage^16-18.

Conversely, joint motion during fixation (even passive motion) is thought to stimulate or encourage cartilage regeneration^19-22. Toward this end, considerable effort has been invested in the application of hinges to external fixation for joints Joint motion has also been suggested as a potentially beneficial factor in distraction treatment, as well¹⁰. This is borne out by data from an RCT comparing the use of a rigid vs motion external fixator. Change in joint biology due to resorption of cysts may be responsible for reversal of symptoms.

Introduction

Major ankle and hindfoot surgery has traditionally been performed as an inpatient. Recent advances in minimally invasive surgery and improved post-operative pain management make it possible to contemplate performing major ankle and hindfoot operations as a day-case. This could have a significant impact on length of stay for these major cases, saving resources and in keeping with government policy.

In this study, we prospectively audited the outcome of the first cohort of patients undergoing major ankle and hindfoot surgery as a day-case against a series of standards.

NHS governance demands that services provided are clinically effective and safe. In the current financial climate and threats over public sector spending cuts, services offered by health care providers should also be cost-effective and profitable. Surgical specialties are often perceived as expensive with high implant costs. The aim of this audit was to cost the profit margin for foot/ankle surgery and test the accuracy of coding data collected.

Hammer toe involves metatarsophalangeal joint (MTPJ) hyperextension and proximal interphalangeal joint (PIPJ) flexion. Surgery commonly involves excision arthroplasty or fusion of the PIPJ with MTPJ soft tissue release if necessary. Previous series record that MTPJ release was carried out “as required” but not how often release is necessary. Myerson and Shereff's (1989) cadaver study found release of the extensors, MTPJ capsule and collateral ligaments necessary for full hammertoe correction. Hossain (2002) found the clinical results of this procedure were no better than simple PIPJ fusion. We release the MTPJ if hyperextension persists after PIPJ correction and release the components sequentially. We studied how often and how extensive a release was required, and how this corelated with pre-operative assessment.

We reviewed the records of 164 patients who had hammer toe correction under one consultant surgeon. Patients with complex corrections were excluded. The severity of the pre-operative deformity was classified as type 1 (PIPJ and MTPJ correctable), 2 (PIPJ fixed, MTPJ correctable) or 3 (neither joint correctable). We recorded the extent of release required for each toe.

Juvenile Chronic Arthritis results in the early degeneration of multiple joints with severe pain and deformity. Treatment of ankle arthritis is complex and ankle replacement is indicated because of adjacent and distant joint involvement.

Ankle sprains in the athlete are one of the most common injuries, and syndesmosis type sprains seem to becoming diagnosed at an increasing rate. There still exists a paucity of information on optimal conservative and operative management.

Deltoid ligament insufficiency has been shown to decrease tibiotalar contact area and increase peak pressures within the lateral ankle mortise. Sectioning of the deltoid ligament has been shown to decrease tibiotalar contact area by 43%. This detrimental effect may create an arthritic ankle joint if left unresolved. Reconstructive efforts thus far have been less than satisfactory. Pankovich and Shivaram described the deltoid ligament as having superficial and deep components based on insertion sites. The superficial layer originates from the anterior colliculus of the medial malleolus and inserts on the navicular, calcaneus and talus. The deep layer originates from the intercollicular groove and posterior colliculus and inserts on the talus. Boss and Hintermann noted that the most consistent and strongest bands of the deltoid were the tibiocalcaneal and posterior deep tibiotalar ligaments. Chronic deltoid ligament insufficiency may be seen in several disorders including trauma and sports injuries, posterior tibial tendon disorders, prior triple arthrodesis with valgus malunion, or total ankle arthroplasty with improper component positioning or pre-existing ligament laxity. The reconstruction of the deltoid ligament in these settings may be critical to the prevention of tibiotalar arthrosis or failure of ankle prostheses from edge loading and polyethylene wear.

The reconstructive technique we describe, under low torque, was able to restore eversion and external rotation stability to the talus, which was statistically similar to the native deltoid ligament. In addition, though we maximally tension this graft to give the most secure repair possible, we did not note any increased stiffness in the ankle joint through our measurement techniques. This unusual, positive secondary effect is different from that noted in studies of lateral ligament reconstruction, where ligament tensioning by all methods attempts to reproduce the native tension and not exceed it. All medial ankle ligament repairs of substance involve some type of tendon-weave (whether autograft or allograft) to achieve reconstruction. Our technique develops its strength not only from the anatomic orientation of the reconstructed ligament, but the strength of the components chosen to fix the tendon graft to the bone. The use of Endobuttons allows the entire graft to sit within the tunnels, without the potential violation of the graft ends achieved through techniques utilizing interference screw fixation. Tensioning the graft proximally through the tibia against a rigid distal construct allows greater tension to be placed on the graft at the deltoid ligament site itself than techniques which employ distal tensioning while holding the ankle into inversion. Finally, the use of a looped graft proximally secured with a post that may be moved even further proximally at the surgeon's discretion creates superior tension to achieve medial column rigidity in grossly unstable situations. Thus, given the critical importance of the deltoid ligament and the relative paucity of repair/reconstruction options available, we believe this novel approach will assist the clinician in anatomically reconstructing this challenging condition.

Deltoid ligament reconstruction technique using semitendinosis allograft, with superimposed line drawing demonstrating orientation of looped graft.

Clubfoot deformity is the most common congenital musculoskeletal disorder (1). Approximately one in one thousand people are born with at least one clubfoot; between 150,000 and 200,000 babies are born with a clubfoot each year (2). Eighty percent of these cases occur in developing countries, and the majority is left untreated. When infants are treated with a non-invasive casting technique pioneered by Ignacio Ponseti M.D., they generally can be “cured” with relative ease. In the United States, 97% of patients given this treatment can walk successfully and are able to live normal lives (3). The Ponseti Method requires several plaster casts but either no or minimal surgery, can be taught fairly easily not only to doctors but also to healthcare workers, nurses, and other people who have some knowledge and training in healthcare. Also, it requires plaster casting, making it an inexpensive treatment.

Dr. Ignacio Ponseti first performed his non-invasive treatment in 1949, but didn't publish his results until 1963. Two more papers, published in 1979 and 1995 described the long-term outcomes of treatment. In 1996 Oxford Press published a book detailing his approach. Although the treatment has always had high success rates, a lack of publicity prevented it from becoming more widely used until the late 1990s.

Its basic mechanism consists of a series of plaster casts and manipulations that gradually reshape the foot around a fixed talus to obtain correction. Generally, between five and seven casts are required. The casts extend from the toes to the upper thigh and hold the knees at a right angle. One of the most important aspects of this method is timing: infants can be given treatment starting at seven days old and ideally should begin treatment before reaching eight months of age.

Brazil, Uganda, Malawi and Chile now have official national programs, which are sponsored by each country's Ministries of Health, in which clinics in each country treat clubfoot disorder using the Ponseti Method. China set up a national program in 2005, but with a population of 1.3 billion people, it will take several years to complete the training. The prevalence of the Ponseti Method varies in the sixty other countries with healthcare workers trained in the treatment.

This talk will review the principles of treatment and focus on results of recurrence after initial treatment with the Ponseti Method.

Introduction

The literature remains controversial on treatment of advanced stages of first metatarsophalangeal (MTP) arthritis and frequently favors arthrodesis. However, complications and suboptimal outcomes in active patients still remain with fusion of the first MTP joint. This study reports results of patients who underwent metallic resurfacing of the metatarsal side of the MTP joint.

Background

There is a general assumption amongst many patients – and some Surgeons- that 1. Metatarsophalangeal Joint Arthrodesis “in neutral plantigrade position” will postoperatively restrict the choice of shoes and heels in particular.

To our knowledge no studies have been carried out to assess this further.

Introduction

Ottawa ankle rules originally described in 1992 have been shown to improve the pick-up rates of ankle fractures and avoid the need for unnecessary X-rays, thus minimising cost and radiation to the patient.

We decided to carry out an audit at our hospital to look at the pick-up rates of ankle fractures and ways to minimise x-rays for the patient both in A&E and in the orthopaedic department.

Background

Salvage procedures on the 1st MTPJ following failed arthroplasty, arthrodesis or hallux valgus surgery are difficult and complicated by bone loss. This results in shortened first ray and transfer metatarsalgia. We present our experience of using tri-cortical interposition grafts to manage this challenging problem.

Bipartite talus is a rare condition of uncertain aetiology, possibly congenital, with only six reported cases in the literature. Previously, these lesions have been successfully managed either conservatively, by excision of the posterior fragment, arthrodesis or one case by internal stabilisation using a postero-anterior screw which failed to lead to bony healing.

We report a series of four symptomatic cases of talus partitus in three patients, with a mean follow-up of 47 months (range 25-66 months). All patients had significant pain on presentation warranting surgical management. All three patients were male, with a mean age of 26 years (range 13-55 years) at surgery. Plain radiographs and computed tomography scans were obtained pre-operatively. All patients were reviewed at follow-up by an independent assessor.

The youngest patient presented aged 13 with a lesion without sub-talar arthrosis. He represented two years later with a similar lesion on the contralateral side. He was treated twice by internal fixation with two postero-anterior cannulated screws augmented with bone graft following preparation of the bone surfaces. The second patient presented with symptoms of isolated sub-talar osteoarthritis. He was treated with a sub-talar arthrodesis augmented with bone graft through a postero-lateral approach. The final patient presented late (age 55) with severe hind-foot osteoarthritis. His symptoms required treatment with tibio-talar-calcaneal fusion and a hind-foot nail. All patients reported a resolution of their symptoms post-operatively. Evidence of was seen radiographically in all cases.

We report the largest series to date of bipartite talus. All four cases were successfully treated surgically with three differing techniques, all of which utilised bone graft and internal fixation to achieve bony healing. We suggest treatment by a fusion of the talar fragments with associated limited fusion if the adjacent joints are markedly degenerate.

Background

Plantar fasciitis is a frequently chronic and disabling cause of foot pain in adults. This prospective study aims to evaluate the analgesic effect of ultrasound guided dry needling in patients with chronic plantar fasciitis, refractory to conservative treatment.

ECSWT has been on the medical horizon for last 30 years mainly in urology for urolithiasis and has found a parallel use in orthopaedics for various chronic soft tissue conditions like Tendoachilles tendinoses and plantar fasciitis etc. ECSWT acts a piezoelectric device releasing acoustic energy and causing micro-trauma activating cytokine mediated response stimulating local angiogenesis and tissue repair.

Introduction

Uncontrolled deep sepsis in the diabetic foot often leads to below knee amputation (BKA). However, for deep sepsis in the forefoot, a transmetatarsal amputation can be curative while preserving the native ankle and hindfoot and allowing mobility without a prosthesis. We critically examined the outcome of transmetatarsal amputation in our diabetic patients with forefoot ulceration and proven osteomyelitis.

Introduction

Medial column insufficiency in patients with painful acquired flatfoot can be difficult to appreciate. The reverse Coleman block test (as described and published by Mr E Wood in 2009) is used in this study to predict medial column instability.

Introduction

Osteochondral defects of the talus are usually a consequence of trauma. They can cause chronic pain and serious disability. Various interventions, non-surgical and surgical, have been used for treating these defects. The objective of this Cochrane systematic review of randomised control trials is to determine the benefits and harms of the interventions used for treating osteochondral defects of the talus in adults.

Introduction

Shoes with a rocker sole are commonly prescribed following forefoot surgery to redistribute pressure towards the heel. By shifting the body weight backwards, does the rocker shoe adversely effect balance and so disturb normal muscle activity? This study investigated the effects of the Darco post-operative shoe, and the impact of a contralateral shoe raise, on forefoot pressure, posture and balance.

Introduction

Second ray problems are common, especially chronic MTP joint dislocation, and intractable metatarsalgia caused by a relatively long second ray we describe a new extra-articular technique that allows considerable shortening

Introduction

Chronic ruptures of the Achilles tendon pose a significant management challenge to the clinician. Numerous methods of surgical reconstruction have been described and are generally associated with a higher complication rate than with immediate repair. We report our results with a single 5cm incision technique to reconstruct chronic Achilles tendon ruptures with transfer of FHL. This simple technique also enables easy tensioning of the graft/reconstruction to match the uninjured leg and early mobilisation.

Lag screw fixation with plate osteosynthesis is the usual recommendation for oblique non-comminuted lateral malleolus fractures. Lag screw fixation may sometimes pose varying difficulties depending on the orientation of the fracture and in osteoporotic bones where the process may cause disintegration of the bone.

The purpose of this study was to evaluate whether additional lag screw fixation with plate osteosynthesis offered any advantage over plate only fixation in non-comminuted oblique fractures of the lateral malleolus. A simple method of fixation was employed where the fracture was reduced and held temporarily with a K wire. After fixation with plate the K wire was removed. A total of 20 patients who had non-comminuted unstable oblique fractures of their lateral malleolus that had been surgically fixed plate only fixation were retrospectively evaluated. The patients were aged between 17 and 70 yrs. Evaluation of the success of fixation, complications, resultant mobility and patient satisfaction was based on information gathered from X-ray findings and clinic notes. These results were compared to an agematched group of 20 consecutive patients treated with lag screw fixation and plate osteosynthesis. There was no significant difference in the rate of or functional outcomes in either groups. Lag screw fixation offers no additional advantage when combined with plate synthesis of non-comminuted oblique lateral malleolus fractures.

Introduction

Many common fractures are inherently stable, will not displace and do not require plaster casting to achieve union in a good position. Nevertheless, many patients with stable fractures are advised that they need a cast, despite the potential for stiffness, skin problems and thromboembolism. Attempts to challenge this practice often meet the argument that patients prefer a cast for pain relief. We analysed five years of a single consultant's fracture clinic to see how many patients with stable foot and ankle fractures chose a cast after evidence-based counselling.

Introduction

Freiberg's infarction poses a challenge to foot and ankle surgeons. Several surgical and non surgical treatment methods are described. We performed a dorsal closing wedge osteotomy, debridement and microfracture of the metatarsal head. Dorsal closing wedge osteotomy helps in bringing the smooth plantar articular surface of the metatarsal head to articulate with the phalangeal articular cartilage whilst offloading the damaged dorsal articular cartilage. Debridement and Microfracture of the metatarsal head helps in regeneration of the damaged cartilaage via subchondral stem cells.

Introduction

We describe our experience with a minimally invasive Chevron and Akin (MICA) technique for hallux valgus correction. This technique adheres to the same principles as open surgical correction but is performed using a specialized high-speed cutting burr under image intensifier guidance via tiny skin portals.

Regional anaesthetic for foot surgery has been discussed as a method of post operative analgesia. Ankle block as the sole anaesthetic for foot surgery has not been extensively reviewed in the literature.

There is a paucity of information on the arterial supply of the navicular, despite its anatomic neighbours, particularly the talus, being investigated extensively. The navicular is essential in maintaining the structural integrity of the medial and intermediate columns of the foot, and is known to be at risk of avascular necrosis. Despite this, there is poor understanding of the vascular supply available to the navicular, and of how this supply is distributed to the various surfaces of the bone.

This study aims to identify the key vessels that supply the navicular, and to map the arterial supply to each surface of the bone. Cadaveric limbs (n=10) were dissected to identify source vessels for each navicular. The talus and navicular were removed, together with the source vessels, en bloc. The source vessels were injected with latex and processed using a new, accelerated diaphanisation technique. This quickly rendered tissue transparent, allowing the injected vessels to be visualised. Each navicular was then reconstructed using a digital microscribe, allowing a three dimensional virtual model of the bone to be assessed. The terminal points of each vessel were then mapped onto this model, allowing the distribution of each source vessel to be determined.

This study will provide the as yet unpublished information on the arterial supply of the human navicular bone. The data will also give quantifiable evidence of any areas consistently restricted to single-vessel supply, and those consistently supplied by multiple vessels. This may help to explain the propensity of this bone to develop disorders such as osteochondritis, avascular necrosis and stress fractures which often have a vascular aetiology.

One of the complications of hallux valgus surgery is shortening of the first metatarsal and this becomes particularly symptomatic in patients with a pre existing short metatarsal (Morton's foot or Greek foot). Initial treatment consists of appropriate insoles which incorporate not only relief of pain due to pressure metatarsalgia under the lesser metatarsal heads but also a Morton type extension under the big toe. Insoles with metatarsal relief are, however, not always well tolerated and surgery becomes necessary. The options are to shorten the lesser metatarsal heads or lengthen the previously shortened first metatarsal. Arthrodesis of the great toe metatarso-phalangeal joint can provide functional length to the first metatarsal.

We have achieved good results in lengthening of the first metatarsal and believe that it is a safe option which avoids trauma to the lesser metatarso-phalangeal joints. The technique is presented and depends on whether there is a residual hallux valgus or whether the toe is well aligned. The operation should address the plane of the deformity and reverse the cause of the lengthening.

Emphasis should however be placed in not getting the complication in the first instance and the incidence of the problematic short first metatarsal has significantly reduced since the decrease in popularity of the Wilson osteotomy.

Technique, inducations, complications and early outcomes with posterior ankle and subtalar arthroscopy

A. ANKLE ARTHROSCOPY: Tips and Pearls on Avoiding Complications

a. Introduction

i. understanding of the anatomy of the foot and ankle is critical to safe performance of arthroscopic procedures and prevention of complications

ii. understanding of the surface and intra-articular anatomy of the ankle/subtalaar region is essential

iii. topographical anatomy serves as a guide to the successful placement of arthroscopic portals in the ankle

iv. neurovascular and tendinous structures are most at risk

b. Indications for Posterior/Subtalar Arthroscopy

i. Posterior ankle/ST Impingement

ii. OLT Ankle (usually posteromedial)

iii. Assist operative reduction of calc or post mal fractures

iv. Arthrodesis ankle/ST or both

c. Portals

i. Know the anatomy, use blunt dissection, minimize re-entry

ii. Preoperative plan for access, pathology, visualization

d. Prone Position

a. Posteromedial

b. Posterolateral

c. Accessory posterolateral

e. Set-up/instrumentation

i. Positioning -

ii. posterior, prone

iii. Distraction- non-invasive vs invasive (trans-calcaneal thin wire)

iv. Equipment - general set-up/instruments

- scopes (4.0 for outside joint or fusions; 2.7 otherwise)

- irrigation/pump (run at lowest flow possible)

f. Tips on Avoiding Complications

i. Patient selection and education

ii. Careful preoperative planning, evaluation

iii. Know/respect your anatomy

iv. Meticulous portal placement/care

v. Limit operative time/distension/tissue damage

vi. Use mini C-arm to monitor

vii. Plan, plan and plan, if you are prepared, all will work out

viii. Rehabilitation protocol and follow up.

Degenerative disorders of tendons present an enormous clinical challenge. They are extremely common, prone to recur and existing medical and surgical treatments are generally unsatisfactory.

Eccentric, but not concentric, exercises have been shown to be effective in managing tendinopathy of the Achilles tendon and of the mid-portion of the Achilles tendon in particular.

There has been much speculation on why eccentric exercises are effective. This talk will highlight the theories and evidence behind why eccentric exercises are effective. An understanding of why eccentric exercises are effective should inform best clinical practice on rehabilitation of tendinopathy. This talk will also discuss limitations of eccentric exercises and highlight areas where future research is needed.

It is difficult to determine the safe timing of weight-bearing or reconstructive surgery in patients with Charcot arthropathy of the foot and ankle. In this study the Doppler spectrum of the first dorsal metatarsal artery was used to monitor the activity of the disease activity and served as a guideline for management. A total of 15 patients (seven men and eight women) with acute diabetic Charcot arthropathy of the foot and ankle were immobilised in a non-weight-bearing cast. They were followed at two-week intervals and bilateral Doppler spectra of the first dorsal metatarsal arteries were obtained using a 10 MHz linear ultrasound probe. The patients were allowed to start weight-bearing or undergo surgery after the Doppler spectrum had returned to normal pattern. The Doppler spectra in the unaffected limbs were triphasic in pattern, whereas those in limbs with active Charcot arthropathy showed monophasic forward flow. They returned to normal after a mean of 13.6 weeks (6 to 20) of immobilisation. Three patients underwent pan-talar arthrodesis to correct gross instability and deformity.

Doppler spectrum analysis of the foot may reflect the activity of the disease in patients with Charcot arthropathy, and may be used as a guide to begin weight-bearing or undergo reconstructive surgery.

The incidence of deep-vein thrombosis (DVT) and pulmonary embolism (PE) is thought to be low following foot and ankle surgery, but the routine use of chemoprophylaxis remains controversial. This retrospective study assessed the incidence of symptomatic venous thromboembolic (VTE) complications following a consecutive series of 2654 patients undergoing elective foot and ankle surgery. A total of 1078 patients received 75 mg aspirin as routine thromboprophylaxis between 2003 and 2006 and 1576 patients received no form of chemical thromboprophylaxis between 2007 and 2010. The overall incidence of VTE was 0.42% (DVT, 0.27%; PE, 0.15%) with 27 patients lost to follow-up. If these were included to create a worst case scenario, the overall VTE rate was 1.43%. There was no apparent protective effect against VTE by using aspirin.

We conclude that the incidence of VTE following foot and ankle surgery is very low and routine use of chemoprophylaxis does not appear necessary for patients who are not in the high risk group for VTE.

The responsiveness of the Manchester–Oxford Foot Questionnaire (MOXFQ) was compared with foot/ankle-specific and generic outcome measures used to assess all surgery of the foot and ankle. We recruited 671 consecutive adult patients awaiting foot or ankle surgery, of whom 427 (63.6%) were female, with a mean age of 52.8 years (18 to 89). They independently completed the MOXFQ, Short-Form 36 (SF-36) and EuroQol (EQ-5D) questionnaires pre-operatively and at a mean of nine months (3.8 to 14.4) post-operatively. Foot/ankle surgeons assessed American Orthopaedic Foot and Ankle Society (AOFAS) scores corresponding to four foot/ankle regions. A transition item measured perceived changes in foot/ankle problems post-surgery. Of 628 eligible patients proceeding to surgery, 491 (78%) completed questionnaires and 262 (42%) received clinical assessments both pre- and post-operatively. The regions receiving surgery were: multiple/whole foot in eight (1.3%), ankle/hindfoot in 292 (46.5%), mid-foot in 21 (3.3%), hallux in 196 (31.2%), and lesser toes in 111 (17.7%). Foot/ankle-specific MOXFQ, AOFAS and EQ-5D domains produced larger effect sizes (> 0.8) than any SF-36 domains, suggesting superior responsiveness. In analyses that anchored change in scores and effect sizes to patients’ responses to a transition item about their foot/ankle problems, the MOXFQ performed well. The SF-36 and EQ-5D performed poorly. Similar analyses, conducted within foot-region based sub-groups of patients, found that the responsiveness of the MOXFQ was good compared with the AOFAS.

This evidence supports the MOXFQ’s suitability for assessing all foot and ankle surgery.

In distal fibular resection without reconstruction, the stabilising effect of the lateral malleolus is lost. Thus, the ankle may collapse into valgus and may be unstable in varus. Here, we describe a child who underwent successful staged surgical correction of a severe neglected valgus deformity after excision of the distal fibula for a Ewing’s sarcoma.

It has been suggested that a supramalleolar osteotomy can return the load distribution in the ankle joint to normal. However, due to the lack of biomechanical data, this supposition remains empirical. The purpose of this biomechanical study was to determine the effect of simulated supramalleolar varus and valgus alignment on the tibiotalar joint pressure, in order to investigate its relationship to the development of osteoarthritis. We also wished to establish the rationale behind corrective osteotomy of the distal tibia.

We studied 17 cadaveric lower legs and quantified the changes in pressure and force transfer across the tibiotalar joint for various degrees of varus and valgus deformity in the supramalleolar area. We assumed that a supramalleolar osteotomy which created a varus deformity of the ankle would result in medial overload of the tibiotalar joint. Similarly, we thought that creating a supramalleolar valgus deformity would cause a shift in contact towards the lateral side of the tibiotalar joint. The opposite was observed. The restricting role of the fibula was revealed by carrying out an osteotomy directly above the syndesmosis. In end-stage ankle osteoarthritis with either a valgus or varus deformity, the role of the fibula should be appreciated and its effect addressed where appropriate.

A total of 80 patients with an acute rupture of tendo Achillis were randomised to operative repair using an open technique (39 patients) or non-operative treatment in a cast (41 patients). Patients were followed up for one year. Outcome measures included clinical complications, range of movement of the ankle, the Short Musculoskeletal Function Assessment (SMFA), and muscle function dynamometry evaluating dorsiflexion and plantar flexion of the ankle. The primary outcome measure was muscle dynamometry.

Re-rupture occurred in two of 37 patients (5%) in the operative group and four of 39 (10%) in the non-operative group, which was not statistically significant (p = 0.68). There was a slightly greater range of plantar flexion and dorsiflexion of the ankle in the operative group at three months which was not statistically significant, but at four and six months the range of dorsiflexion was better in the non-operative group, although this did not reach statistically significance either. After 12 weeks the peak torque difference of plantar flexion compared with the normal side was less in the operative than the non-operative group (47% vs 61%, respectively, p < 0.005). The difference declined to 26% and 30% at 26 weeks and 20% and 25% at 52 weeks, respectively. The difference in dorsiflexion peak torque from the normal side was less than 10% by 26 weeks in both groups, with no significant differences. The mean SMFA scores were significantly better in the operative group than the non-operative group at three months (15 vs 20, respectively, p < 0.03). No significant differences were observed after this, and at one year the scores were similar in both groups.

We were unable to show a convincing functional benefit from surgery for patients with an acute rupture of the tendo Achillis compared with conservative treatment in plaster.

We reviewed the outcome of distal chevron metatarsal osteotomy without tendon transfer in 19 consecutive patients (19 feet) with a hallux varus deformity following surgery for hallux valgus. All patients underwent distal chevron metatarsal osteotomy with medial displacement and a medial closing wedge osteotomy along with a medial capsular release.

The mean hallux valgus angle improved from −11.6° pre-operatively to 4.7° postoperatively, the mean first-second intermetatarsal angle improved from −0.3° to 3.3° and the distal metatarsal articular angle from 9.5° to 2.3° and the first metatarsophalangeal joints became congruent post-operatively in all 19 feet. The mean relative length ratio of the metatarsus decreased from 1.01 to 0.99 and the mean American Orthopaedic Foot and Ankle Society score improved from 77 to 95 points.

In two patients the hallux varus recurred. One was symptom-free but the other remained symptomatic after a repeat distal chevron osteotomy. There were no other complications.

We consider that distal chevron metatarsal osteotomy with a medial wedge osteotomy and medial capsular release is a useful procedure for the correction of hallux varus after surgery for hallux valgus.

The aim of this study was to identify the incidence of post-operative symptomatic deep-vein thrombosis (DVT), as well as the risk factors for and location of DVT, in 665 patients (701 ankles) who underwent primary total ankle replacement. All patients received low-molecular-weight heparin prophylaxis. A total of 26 patients (3.9%, 26 ankles) had a symptomatic DVT, diagnosed by experienced radiologists using colour Doppler ultrasound. Most thrombi (22 patients, 84.6%) were localised distally in the operated limb. Using a logistic multiple regression model we identified obesity, a previous venous thromboembolic event and the absence of full post-operative weight-bearing as independent risk factors for developing a symptomatic DVT.

The incidence of symptomatic DVT after total ankle replacement and use of low-molecular-weight heparin is comparable with that in patients undergoing total knee or hip replacement.

Diagnostic and operative codes are routinely collected for every patient admitted to hospital in the English NHS. Data on post-operative complications following foot and ankle surgery have not previously been available in large numbers. Data on symptomatic venous thromboembolism events and mortality within 90 days were extracted for patients undergoing fixation of an ankle fracture, first metatarsal osteotomy, hindfoot fusions and total ankle replacement over a period of 42 months. For ankle fracture surgery (45 949 patients), the rates of deep-vein thrombosis (DVT), pulmonary embolism and mortality were 0.12%, 0.17% and 0.37%, respectively. For first metatarsal osteotomy (33 626 patients), DVT, pulmonary embolism and mortality rates were 0.01%, 0.02% and 0.04%, and for hindfoot fusions (7033 patients) the rates were 0.03%, 0.11% and 0.11%, respectively. The rate of pulmonary embolism in 1633 total ankle replacement patients was 0.06%, and there were no recorded DVTs and no deaths. Statistical analysis could only identify risk factors for venous thromboembolic events of increasing age and multiple comorbidities following fracture surgery.

Venous thromboembolism following foot and ankle surgery is extremely rare, but this subset of fracture patients is at a higher risk. However, there is no evidence that thromboprophylaxis reduces this risk, and these national data suggest that prophylaxis is not required in most of these patients.

The aim of this study was to compare the outcome of bilateral sequential total ankle replacement (TAR) with that of unilateral TAR. We reviewed 23 patients who had undergone sequential bilateral TAR under a single anaesthetic and 46 matched patients with a unilateral TAR. There were no significant pre-operative differences between the two groups in terms of age, gender, body mass index, American Society of Anaesthesiologists classification and aetiology of the osteoarthritis of the ankle. Clinical and radiological follow-up was carried out at four months, one and two years.

After four months, patients with simultaneous bilateral TAR reported a significantly higher mean pain score than those with a unilateral TAR. The mean American Orthopaedic Foot and Ankle Society hindfoot score and short-form 36 physical component summary score were better in the unilateral group. However, this difference disappeared at the one-and two-year follow-ups.

Bilateral sequential TAR under one anaesthetic can be offered to patients with bilateral severe ankle osteoarthritis. However, they should be informed of the long recovery period.

We report the clinical and radiological outcome of total ankle replacement performed in conjunction with hindfoot fusion or in isolation. Between May 2003 and June 2008, 60 ankles were treated with total ankle replacement with either subtalar or triple fusion, and the results were compared with a control group of 288 ankles treated with total ankle replacement alone.

After the mean follow-up of 39.5 months (12 to 73), the ankles with hindfoot fusion showed significant improvement in the mean visual analogue score for pain (p < 0.001), the mean American Orthopaedic Foot and Ankle Society score (p < 0.001), and the mean of a modified version of this score (p < 0.001). The mean visual analogue pain score (p = 0.304) and mean modified American Orthopaedic Foot and Ankle Society score (p = 0.119) were not significantly different between the hindfoot fusion and the control groups. However, the hindfoot fusion group had a significantly lower mean range of movement (p = 0.009) and a higher rate of posterior focal osteolysis (p = 0.04). Both groups showed various complications (p = 0.131) and failure occurring at a similar rate (p = 0.685).

Subtalar or triple fusion is feasible and has minimal adverse effects on ankles treated with total ankle replacement up to midterm follow-up. The clinical outcome of total ankle replacement when combined with hindfoot fusion is comparable to that of ankle replacement alone. Thus, hindfoot fusion should be performed in conjunction with total ankle replacement when indicated.

This study assessed if transfer of the extensor hallucis longus is a valid alternative treatment to split transfer of the tibialis anterior tendon in adult hemiplegic patients without overactivity of the tibialis anterior.

One group of 15 patients had overactivity of tibialis anterior in the swing phase, and underwent the split transfer. A further group of 14 patients had no overactivity of tibialis anterior, and underwent transfer of extensor hallucis longus. All patients had lengthening of the tendo Achillis and tenotomies of the toe flexors. All were evaluated clinically and by three-dimensional gait analysis pre- and at one year after surgery. At this time both groups showed significant reduction of disability in walking. Gait speed, stride length and paretic propulsion had improved significantly in both groups. Dorsiflexion in the swing phase, the step length of the healthy limb and the step width improved in both groups, but only reached statistical significance in the patients with transfer of the extensor hallucis longus. There were no differences between the groups at one year after operation.

When combined with lengthening of the tendo Achillis, transfer of the extensor hallucis longus can be a valid alternative to split transfer of the tibialis anterior tendon to correct equinovarus foot deformity in patients without overactivity of tibialis anterior.

Open reduction and internal fixation of high-energy pilon fractures are often associated with serious complications. Various methods have been used to treat these injuries, with variable results. A total of 17 consecutive patients with pilon fractures of AO/OTA type 43-B3 (n = 1), type C2 (n = 12) and type C3 (n = 4) were treated by indirect reduction by capsuloligamentotaxis and stabilisation using an ankle-spanning Ilizarov fixator. The calcaneal ring was removed at a mean of 3.7 weeks (3 to 6). A total of 16 patients were available for follow-up at a mean of 29 months (23 to 43). The mean time to healing was 15.8 weeks (13 to 23). Nine patients had pin-track infections but none had deep infection or osteomyelitis. Four patients (25%) had malunion. Fair, good or excellent ankle scores were found in 14 patients. External fixation with a ring fixator achieves stable reduction of the fractured fragments without additional trauma to soft tissues.

With minimum complications and good healing results, the Ilizarov apparatus is particularly useful for high-energy pilon fractures.

We describe five adolescent patients aged between 13 and 16 years with bipartite ossification of the posteromedial aspect of the talus. All presented without a history of trauma.

All the ankles had a similar radiological appearance. Clinically, some restriction of movement was noted in three ankles and two subtalar joints, In addition, pain was noted over the posteromedial aspect of the ankle in three patients. In each patient the bipartite fragment was excised through a posteromedial approach to the ankle. Complete resolution was achieved at six months in three patients, with the remaining two describing exercise-induced symptoms. In one of these this precluded participation in sport.

Despite numerous anatomical variations within the tarsus, a case series of a bipartite talus has not previously been reported. This anatomical variation should be recognised to avoid misinterpretation as post-traumatic or other pathological processes. In the presence of recalcitrant symptoms excision is an option, but this is not universally successful in abolishing symptoms.

We describe the early results of a prospective study of 100 total ankle replacements (96 patients) at a single centre using the Mobility Total Ankle Replacement. At final review, six patients had died and five ankles (5%) had been revised, two by fusion and three by exchange of components. All remaining patients were reviewed at a minimum of three years. The mean follow-up was 43 months (4 to 63). The three-year survival was 97% (95% confidence interval (CI) 91 to 99). The four-year survival was 93.6% (95% CI 84.7 to 97.4). The portion of bony interface that was visible on plain radiograph was divided into 15 zones and a radiolucent line or osteolytic cavity was seen in one zone in 14 ankles. It was not seen in more than one zone. In five ankles it was > 10 mm in width.

This study suggests that the early outcome of ankle replacement is comparable to that of other total joint replacements.

There are few reports of the surgical treatment for late stage Freiburg’s disease with flattening of the metatarsal head and osteoarthritis. We describe the results of the surgical treatment of ten consecutive patients with advanced stage Freiburg’s disease (Smillie’s stage V), using a technique that has not been published previously.

We report an audit of 208 patients with a mean age of 39 years (16 to 65) attending the Orthopaedic Assessment Unit at the Wellington Hospital between January 2006 and December 2007 with an injury of the tendo Achillis requiring immobilisation in a cast. Information on assessment of venous thromboembolism (VTE) risk, prophylactic measures and VTE events for all patients was obtained from the medical records. A VTE risk factor was documented in the records of three (1%) patients. One of the 208 patients received aspirin prophylaxis; none received low molecular weight heparin. In all, 13 patients (6.3%, 95% confidence interval 3.4 to 10.5) developed symptomatic VTE during immobilisation in a cast, including six with a distal deep-vein thrombosis (DVT), four with a proximal DVT, and three with a confirmed pulmonary embolus. This incidence of symptomatic VTE is similar to that reported following elective hip replacement.

We propose that consideration is given to VTE prophylaxis during prolonged immobilisation of the lower limbs in a cast, to ensure that the same level of protection is provided as for patients undergoing elective hip replacement.