Introduction. Diabetes is increasing on a global scale. By 2030, 10% of the global population, ½ billon people, are predicted to have diabetes. Potentially there will be a corresponding increase in number of patients referred for surgery. Traditional surgical management of these patients is challenging. Presented is a case series utilizing Minimally Invasive Surgical Techniques of percutaneous metatarsal neck osteotomies, metatarsal head debridement, mid-foot closing-wedge osteotomies and hind-foot arthrodesis, for the surgical management of diabetic foot pathology. The potential socio-economic benefits analysis with regards to reduction in out-patient and theatre time, patient length of stay and time to healing are also postulated. Methods. Minimally Invasive Surgical Techniques of metatarsal neck osteotomy, metatarsal head debridement, closing wedge osteotomy, mid-fusion and hind-foot arthrodesis nailing are described. Procedures are preformed as day cases with fluoroscopic guidance. Low speed, high torque burrs and wedges, create the osteotomies, which can be held with percutaneous fixation. Comparative cost analysis of conservative treatment, including clinic visits, out-patient debridement, dressings, intravenous and oral antibiotics, versus Minimally Invasive Surgical Techniques is presented. Results. Six patients had metatarsal osteotomies for mechanical ulceration. Five reported good outcome. One patient required revision to forefoot arthroplasty due to mal-union. Five patients had debridement of metatarsal heads, which healed on average at six to eight weeks. Eight patients had mid-foot arthrodesis. Two infected cases required removal of metalwork. Three patients had hind-foot arthrodesis for arthritis following ankle fracture with degeneration and deformity. Patients had good short and early medium term outcomes, with no reports of below-knee amputation. This technique is reproducible once the initial learning curve is mastered. Comparative cost analysis, suggests significant financial savings by reducing inpatient admissions, clinic visits and theatre time. Conclusion. Minimally Invasive Surgical Techniques may provide an alternative surgical management for diabetic patient with foot and ankle pathology

To date, the literature has not yet revealed superiority of Minimally Invasive (MI) approaches over conventional techniques. We performed a systematic review to determine whether minimally invasive approaches are superior to conventional approaches in total hip arthroplasty for (1) clinical and (2) functional outcomes. We performed a meta-analysis of level 1 evidence to determine whether (3) minimally invasive approaches are superior to conventional approaches for clinical outcomes. All studies comparing MI approaches to conventional approaches were eligible for analysis. The PRISMA guidelines were adhered to throughout this study. Registries were searched using the following MeSH terms: ‘minimally invasive’, ‘muscle-sparing’, ‘THA’, ‘THR’, ‘hip arthroplasty’ and ‘hip replacement’. Locations searched included PubMed, the Cochrane Library, ClinicalTrials.gov, the EU clinical trials register and the International Clinical Trials Registry Platform (World Health Organisation). Twenty studies were identified. There were 1,282 MI THAs and 1,351 conventional THAs performed. (1). There was no difference between MI and conventional approaches for all clinical outcomes of relevance including all-cause revision (p=0.959), aseptic revision (p=0.894), instability (p=0.894), infection (p=0.669) and periprosthetic fracture (p=0.940). (2). There was also no difference in functional outcome at early or intermediate follow-up between the two groups (p=0.38). (3). In level I studies exclusively, random-effects meta-analysis demonstrated no difference in the rate of aseptic revision (p=0.461) between both groups. Intermuscular MI approaches are equivalent to conventional THA approaches when considering all-cause revision, aseptic revision, infection, dislocation, fracture rates and functional outcomes. Meta-analysis of level 1 evidence supports this claim

Background:. Previous attempts at small incision hallux valgus surgery have compromised the principles of bunion correction in order to minimise the incision. The Minimally Invasive Chevron/Akin (MICA) is a technique that enables an open modified Chevron/Akin to be done through a 3 mm incision, facilitated by a 2 mm Shannon burr. Methodology:. This is a consecutive case series performed between 2009 and 2012. This includes the learning curve for minimally invasive surgery. All cases were performed by a single surgeon at two different sites, one centre where minimally invasive surgery is available and the other where it is not. The standard procedure in both centres is a modified Chevron osteotomy. Regardless of whether the osteotomy was performed open or minimally invasive two-screw fixation was performed. Retrospective analysis includes the IMA, HVA, M1 length, forefoot width and forefoot: hindfoot ratio. Clinical outcomes include the MOXFQ, AOFAS, and assessment of complications. Results:. There were 70 cases in each arm. Follow-up was 4 years to 6 months. The radiological outcomes were similar in both groups. There was an increased rate of screw removal in the MICA group. There were also cases of hallux varus, these occurred in the cases with severe pre-operative IMA angles that also had a lateral release and an Akin. There was high satisfaction in both groups. Conclusion:. This is the only comparison of minimally invasive and open techniques that has been performed, providing a direct comparison of the utility of a burr compared to a saw. These early results demonstrate the efficacy of a Minimally Invasive Chevron/Akin in terms of achieving radiological correction. The clinical outcomes are excellent but there is a learning curve and this needs to be managed

Purpose: There is great interest recently,among Orthopaedic surgeons about Minimally Invasive Surgery (MIS) in knee arthroplasty.We present a retrospective,randomized review of 50 patients,who had their knees replaced during a period of a year and show our experience in indications,surgical technique,early results and comparison to conventional surgery. Method: Using regional anaestesia and an incision of about 9cm (7–11cm), the components are placed without patellar eversion.We briefly describe regional anatomy in relation to surgical technique.We compare early results using MIS to standard procedure,regarding pain,function and rehabilitation and describe pros and cons of the method. Results: Early results show faster recovery time, less post-operative pain and effusion and quicker return to normal activities.There were no skin problems. 96% of the knees that recieved MIS had good to excellent KSS and KS scoring Systems score.We certainly need longer results and better experience because the method is technically challenging. Smaller surgical tools are also needed in order the technique becomes better and easier for the surgeon

Introduction: The concept of minimally invasive total knee arthroplasty surgery evolved to reduce quadriceps muscle strength loss and improve clinical outcome following total knee replacement. We performed a systematic review of the published literature on Minimally Invasive Total Knee Arthroplasty (MITKA) and to analyse the reported surgical outcomes. Material and Methods: A comprehensive search of databases using various combinations of the keywords: minimally invasive total knee arthroplasty, mini-incision total knee replacement and minimally invasive arthroplasty was performed. 28 studies published from January 2003 to June 2008 meeting the inclusion criteria were evaluated using the Coleman Methodology Score (CMS). Results: AT A mean CMS of 60, most studies reporting on outcome of MITKA are of moderate scientific quality. Patients undergoing MITKA tend to have decreased post operative pain, rapid recovery of quadriceps function, reduced blood loss, improved range of motion (mostly reported as a short term gain) and shorter hospital stay in comparison to patients undergoing standard total knee arthroplasty. These benefits however need to be balanced against the incidence of increased tourniquet time and increased incidence of component malaligment in the MITKA group. Conclusion: Evidence based knowledge regarding results of MITKA comes from prospective studies of moderate quality with short follow up periods. Multicenter studies with longer follow ups are needed to justify the long term advantages of MITKA over standard total knee arthroplasty

Background. Stress fractures at tracker after computer navigated total knee replacement are rare. Periprosthetic fracture after Minimally Invasive Plate Osteosynthesis (MIPO) of stress fracture through femoral tracker is unique in orthopaedic literature. We are reporting this unique presentation of periprosthetic fractures after MIPO for stress fracture involving femoral pin site track in computer assisted total knee arthroplasty, treated by reconstruction nail (PFNA). Methods. A 75-year old female, who had computer navigated right total knee replacement, was admitted 6 weeks later with increasing pain over distal thigh for 3 weeks without trauma. Prior to onset of pain, she achieved a range of movements of 0–105 degrees. Perioperative radiographs did not suggest obvious osteoporosis, pre-existent benign or malignant lesion, or fracture. Radiographs demonstrated transverse fracture of distal third of femur through pin site track. We fixed the fracture with 11-hole combihole locking plate by MIPO technique. Eight weeks later, she was readmitted with periprosthetic fracture through screw hole at the tip of MIPO Plate and treated by Reconstruction Nail (PFNA), removal of locking screws and refixation of intermediate segment with unicortical locking screws. Then she was protected with plaster cylinder for 4 weeks and hinged brace for 2 months. Results. Retrograde nail for navigation pin site stress fracture entails intraarticular approach with attendant risks including scatches to prosthesis and joint infection. So we opted to fix by MIPO technique. Periprosthetic fracture at the top of MIPO merits fixation with antegrade nail in conjunction with conversion of screws in the proximal part of the plate to unicortical locking screws. Overlap of at least 3cms offers biomechanical superiority. She made an uneventful recovery and was started on osteoporosis treatment, pending DEXA scan. Conclusion. Reconstruction Nail (PFNA), refixation of intermediate segment with unicortical locking screws constitutes a logical management option for the unique periprosthetic fracture after MIPO of stress fracture involving femoral pin site track in computer assisted total knee replacement

A major limiting factor for the accuracy in Computer Assisted Surgery (CAS) is the system’s positional knowledge of the patient’s anatomy, derived through the process of registration. In computer assisted Minimally Invasive Surgery (MIS) the registration process is made more difficult by the lack of direct access to a large portion of the surface to be registered. Current experience with a hands-on robotic surgery system, which uses a set of points measured with a mechanical digitiser on the exposed surface of the bone and a surface reconstructed from computer tomography (CT) data, has shown that accurate and robust registration is still possible through an MIS approach. The registration method described here, which was originally developed for robotic assisted total knee arthroplasty (TKA), has successfully been adapted for robotic assisted unicompartmental knee arthroplasty (UKA) and computer assisted hip resurfacing (HR). Results show that good registration can be achieved by registering the bone surfaces through conventional surgical incisions, with two additional stab-wounds required for the UKA procedure. However, experimental results suggest that, because of the limited access resulting from a smaller incision, a good correspondence between the point-set and surface measurements (i.e., better than one millimeter) is necessary for registration accuracy better than two degrees and two millimeters. This degree of correspondence can be expected for a good surface model and an appropriate intra-operative setup, but poses an important constraint on the requirements for a system suitable for this type of procedure, if a registration method based on anatomical features is to be used without the need for additional access

Introduction: In the last few years minimally invasive surgery in hip replacement is becoming more popular among orthopaedic surgeons because of less morbidity and faster rehabilitation. However several complications have been reported expecially in the so called “learning curve” (first twenty cases). The purpose of this study is to evaluate the learning curve of three different minimally invasive approaches.

Methods and Materials: In this study three different surgical approaches of THA were evaluated: lateral mini incision (GroupA), minimally invasive anterior approach (GroupB) and minimally invasive antero lateral approach (GroupC). The first twenty cases of each surgical approach were selected and compared with a control group (GroupD) of 149 total hip replacement operated using a lateral standard approach (> 12 cm) in the same period by the same experienced surgeon.

In all cases a specialized dedicated surgical instrumentation was used. Inclusion criteria to enter the study group (A-B-C Groups) were:BMI< 30, diagnosis of primary osteoarthritis, age< 75 years.

Following parameters were evaluated: intra and post operative complications, total blood loss, time of surgery, component placement, length of hospital stay and functional outcomes (HHS, WOMAC) at six weeks.

Results: No dislocations, infections and early aseptic loosening were detected in groups A, B and C. No significant differences were detected regarding the length of hospital stay in all groups. In group B the time of surgery was significantly higher than in group D. The total blood loss of group A, B and C was statistically lower than group D. Clinical outcomes at six weeks in groups B and C were significantly better that in group A and D. The following complications were detected:

Group A: two sciatic nerve palsy (one transient and one permanent), one greater trochanter fracture, one femoral stem malposition.

Group B: one greater trochanter fracture, one proximal femoral fracture, one rupture of tensor fasciae latae, two haematomas.

Group C: no complications were detected.

In control group D (149 patients) the following complications were observed: one proximal femoral fracture, one case of cup malposition and one infection.

Conclusions: The main advantages of all MIS approaches seem to be the reduced total blood loss, even in the learning curve. However during learning curve the minimally invasive approaches seem to have a higher rate of complications than the standard procedures even in selected patients. In muscle sparing approaches (anterior and antero lateral) the early functional outcomes are better than other approaches (standard and mini incision). Among the evaluated minimally invasive procedures, the antero lateral approach seems to be safer and less demanding than others.

Background. Total Shoulder Arthroplasty (TSA) has been shown to improve the function and pain of patients with severe degeneration. Recently, TSA has been of interest for younger patients with higher post-operative expectations; however, they are treated using traditional surgical approaches and techniques, which, although amenable to the elderly population, may not achieve acceptable results with this new demographic. Specifically, to achieve sufficient visualization, traditional TSA uses the highly invasive deltopectoral approach that detaches the subscapularis, which can significantly limit post-operative healing and function. To address these concerns, we have developed a novel surgical approach, and guidance and instrumentation system (for short-stemmed/stemless TSA) that minimize muscle disruption and aim to optimize implantation accuracy. Development. Surgical Approach: A muscle splitting approach with a reduced incision size (∼6–8cm) was developed that markedly reduces muscle disruption, thus potentially improving healing and function. The split was placed between the infraspinatus and teres-minor (Fig.1) as this further reduces damage, provides an obvious dissection plane, and improves access to the retroverted articular surfaces. This approach, however, precludes the use of standard bone preparation methods/instruments that require clear visualization and en-face articular access. Therefore, a novel guidance technique and instrumentation paradigm was developed. Minimally Invasive Surgical Guidance: 3D printed Patient Specific Guides (PSGs) have been developed for TSA; however, these are designed for traditional, highly invasive approaches providing unobstructed access to each articular surface separately. As the proposed approach does not offer this access, a novel PSG with two opposing contoured surfaces has been developed that can be inserted between the humeral and scapular articular surfaces and use the rotator cuff's passive tension to self-locate (Fig.2). During computer-aided pre-operative planning/PSG design, the two bones are placed into an optimized relative pose and the PSG is constructed between and around them. This ensures that when the physical PSG is inserted intra-operatively, the bones are locked into the preoperatively planned pose. New Instrumentation Paradigm: With the constraints of this minimally invasive approach, a new paradigm for bone preparation/instrumentation was required which did not rely on en-face access. This new paradigm involves the ability to simultaneously create glenoid and humeral guide axes – the latter of which can guide humeral bone preparation and be a working channel for tools – by driving a short k-wire into the glenoid by passing through the humerus starting laterally (Fig.3). By preoperatively defining the pose produced by the inserted PSG as one that collinearly aligns the bones’ guide axes, the PSG and an attached c-arm drill guide facilitate this new lateral drilling technique. Subsequently, bone preparation is conducted using novel instruments (e.g. reamers and drills for creating holes radial to driver axis) powered using a trans-humeral driver and guided by the glenoid k-wire or humeral tunnel. Conclusion. To meet the expectations of increasingly younger TSA patients, advancements in procedural invasiveness and implantation accuracy are needed. This need was addressed by developing a novel, fully integrated surgical approach, PSG system, and instrumentation paradigm, the initial in-vitro results of which have demonstrated acceptable accuracy while significantly reducing invasiveness

Minimally Invasive foot surgery remains controversial. Potential benefits include a reduced incidence of wound complications, faster return to employment and normal footwear. There are no studies published regarding the results of minimally invasive dorsal cheilectomy. Patients and Methods. Thirty eight patients with painful grade I hallux rigidus underwent dorsal cheilectomy between April 2006 and June 2010. Minimally invasive cheilectomy (MIC) was introduced in August 2009. AOFAS scores, satisfaction, return to normal shoes and employment were assessed. Results. Twenty two patients had open cheilectomy (OC) whilst 16 had MIC. Mean follow-up was 6 months for the MIC group and 35 months for the OC group. Mean AOFAS score was 75/100 (SD 17) in the MIC group and 70/100 (SD 18). Patients rated their satisfaction as 9.1/10 for MIC and 8.6/10 for OC. There was no significant difference in time to return to normal shoes (P = 0.32) or employment (P = 0.07). Two patients (one MIS, one OC) had a superficial wound infection which resolved with oral antibiotics. One patient had a first metatarsophalangeal joint fusion in the MIS group. Two patients in the OC group went on to have a first metatarsophalangeal joint fusion and one underwent joint resurfacing. Discussion. These results suggest MIC has comparable early results to OC. Larger studies are required to further establish the benefits of MIC. Conclusion. Minimally invasive dorsal cheilectomy seems to offer a safe alternative to open cheilectomy with promising early results. Patient satisfaction with this procedure is very high

Introduction. Minimally Invasive foot surgery remains controversial. Potential benefits include a reduced incidence of wound complications, faster return to employment and normal footwear. There are no studies published regarding the results of minimally invasive dorsal cheilectomy. Patients and Methods. Thirty eight patients with painful grade I hallux rigidus underwent dorsal cheilectomy between April 2006 and June 2010. Minimally invasive cheilectomy (MIC) was introduced in August 2009. AOFAS scores, satisfaction, return to normal shoes and employment were assessed. Results. Twenty two patients had open cheilectomy (OC) whilst 16 had MIC. Mean follow-up was 6 months for the MIC group and 35 months for the OC group. Mean AOFAS score was 75/100 (SD 17) in the MIC group and 70/100 (SD 18). Patients rated their satisfaction as 9.1/10 for MIC and 8.6/10 for OC. There was no significant difference in time to return to normal shoes (P = 0.32) or employment (P = 0.07). Two patients (one MIS, one OC) had a superficial wound infection which resolved with oral antibiotics. One patient had a first metatarsophalangeal joint fusion in the MIS group. Two patients in the OC group went on to have a first metatarsophalangeal joint fusion and one underwent joint resurfacing. Discussion. These results suggest MIC has comparable early results to OC. Larger studies are required to further establish the benefits of MIC. Conclusion. Minimally invasive dorsal cheilectomy seems to offer a safe alternative to open cheilectomy with promising early results. Patient satisfaction with this procedure is very high

Background: The combination of imageless computer aided navigation and minimally invasive surgery for total knee arthroplasty (TKA) has not been reported. Computer Aided Surgery (CAS) of the knee has demonstrated more reproducible component alignment compared to standard instrumentation. Minimally Invasive Surgery (MIS) for total knee arthroplasty allows for quicker rehabilitation and less post-operative pain. However, MIS has been associated with a higher complication rate, including component malalignment, compared to a conventional operative approach. Both MIS and CAS have been demonstrated to have a learning curve. Aims: This study presents the initial 30 procedures in which imageless CAS was combined with MIS for TKA by the senior author. Specifically, we examined the accuracy of coronal alignment and the learning curve associated with the combined technique. Between 6 and 12 weeks full length weight bearing radiographs were taken when patients could achieve full extension. Coronal alignments of the tibial and femoral components were calculated relative to the mechanical axis. The goal for both femoral and tibial component alignment was within 30 of 900 to the mechanical axis. The results were verified by an independent observer. Analysis of sequential tourniquet times, complication rates and component alignment were used as measure of the learning curve for the technique. Component position was acceptable for all implants. The mean coronal tibial alignment was 90.35 degrees (range 88 to 92 degrees) and the mean coronal femoral alignment 90.10 degrees (range 88 to 93 degrees) to the mechanical axis. Tourniquet time averaged 90 minutes (range 60 to 118 minutes). There was no significant reduction in tourniquet time with increasing familiarity with the technique. Our results demonstrate that CAS combined with MIS for TKA maintains the accuracy of component alignment despite the minimally invasive approach. These initial results demonstrate no significant learning curve associated with the technique

Introduction: The value of arthroscopy, fluoroscopy, and e-learning courses (focusing on minimally invasive surgical techniques) for the treatment of intra-articular distal radius fractures (I-ADRF), remains controversial. This study compares the outcomes after fluoroscopically assisted (FA) reduction and external fixation of distal radius fractures, with or without concomitant arthroscopic evaluation. Materials and Methods: Forty-seven patients with I-ADRF underwent FA external fixation and percutaneous pinning. Among them 23 had additional arthroscopic evaluation of their wrist. For teaching purposes procedures with the use of fluoroscopy and arthroscopy were recorded and adapted as a course for the On-line Performance Support Environment for Minimally Invasive Orthopaedic Surgery (“OnLineOrtho” EU- sponsored project). The context of these courses was incorporated in an intelligent medical performance support environment. The duration of the procedure, the surgical findings and the outcomes were recorded. Results: The follow-up period ranged from 24 to 62 months and the patients were evaluated at 3, 6, 12 and 24 months. The addition of arthroscopy prolonged the procedure by 25 minutes but diminished the number of images obtained by the image intensifier by 5. After arthroscopic evaluation the placement of subchon-dral pins was changed, because of step-off, in 11 of 23 patients. Also tears of the TFCC (14 of 23 patients), perilunate ligaments (16) were depicted. Patients who underwent additional arthroscopic evaluation had significantly better supination, extension and flexion at all time points than those who had only fluoroscopically assisted surgery. The value added by e-courses and the online performance support system is highlighted through the recognition of the systems effectiveness in e-training. Discussion: During reduction and fixation of I-ADRF, arthroscopy is a very useful tool for the inspection of the articular surface, the ligaments and the TFCC. Long-term evaluation revealed that patients with additional arthroscopy returned to their previous activities in shorter periods and had better supination, flexion, and extension than patients with FA procedures. Fluoroscopy is essential for the minimally invasive surgical treatment of intra-articular distal radius fractures, whereas arthroscopy is an additional valuable tool that improves the outcome, and e-courses are useful adjuncts for teaching purposes

Introduction: Recent studies have shown that Minimally Invasive Total Hip Replacements (MISTHRs) have not reduced hospital stay. We seek to demonstrate the importance of infrastructure allowing early mobilisation and discharge thereby gaining the full benefits of MISTHRs. We compared the early outcomes of 2 units where MISTHRs were carried out by the same surgical teams but had 2 different infrastructure set-ups. In the first unit a “Short Stay Programme” (SSP) was in place. This involved early pre-operative assessment by medical, physiotherapy and occupational therapy teams. Post-operative analgesia was augmented with the use of a pain pump administering local anaesthetic as a continuous infusion. Patients were mobilised at 4 hours after surgery and were supported in the community by an “Outreach Team”. In the second unit the patients had MISTHRs without changes to the conventional infrastructure. Methods: One surgeon carried out all operations, at 2 different hospitals using a mini-posterior approach with specific minimally-invasive instrumentation. Uncemented ABG II prostheses were used. Hospital discharge was only achieved after specific criteria were fulfilled. Discussion: A significant reduction in the length of stay of MISTHRs patients is achieved by the Short Stay Programme, with no difference in complications. The full advantages of MISTHRs are achieved only if the whole aim of the care pathway is to facilitate early, supported discharge. Trouble-shooting pre-operatively, effective analgesia and post-operative support are the key elements of this programme

Various reports confirm that elevations in serum markers associated with skeletal muscle injury exist and can occur after orthopaedic surgery in the absence of overt clinical manifestations of myocardial injury. The purpose of this study is to measure the influence surgical approach on these serum markers following primary Minimally Invasive THA. Consecutive enrollment of 30 patients into three different groups of 10 was performed. The MIS Modified Watson Jones THA is an approach using an inter-muscular plane, the Mini Posterior is a trans-muscular approach with some muscle detachment and repair, while the MIS II Incision THA is an inter-muscular approach anteriorly and a trans-muscular approach posteriorly. Blood samples for total creatine kinase (CK), creatine phospho-kinase (CPK), and serum myoglobin were obtained at screening and the morning before surgery as a baseline, immediately post-operatively in the recovery room and 8, 16, 24, 36, 48, and 72 hours post-operatively. Hemoglobin and hematocrit was obtained pre-operatively, 16, 36, and 72 hours (±6 hours) post-operatively. Cardiac troponin-I was measured the morning before surgery (pre-operatively) and 16 hours following surgery to monitor any contributory effect of myocardial injury. We report measurable and reproducible trends in serum enzyme levels consistent with skeletal muscle damage due to THA. Troponin-I remained normal in all but one case throughout the entire study indicating no myocardial contribution to measured serum enzyme levels. While these trends may have slight correlation with surgical approach, they were not statistically significant. We conclude that all three procedures do affect serum enzyme markers and are safe from this standpoint, but no surgical approach appears to affect the degree of muscle trauma more or less than another

Increasing incidence of osteoporosis, obesity and an aging population have led to an increase in low energy hip fractures in the elderly. Perceived lower blood loss and lower surgical time, media coverage of minimal invasive surgery and patient expectations unsurprisingly have led to a trend towards intramedullary devices for fixation of extracapsular hip fractures. This is contrary to the Cochrane review of random controlled trials of intramedullary vs extramedullary implants which continues recommends the use of a sliding hip screw (SHS) over other devices. Furthermore, despite published literature of minimally invasive surgery (MIS) of SHS citing benefits such as reduced soft tissue trauma, smaller scar, faster recovery, reduced blood loss, reduced analgesia needs; the uptake of these approaches has been poor. We describe a novel technique one which remains minimally invasive, that not only has a simple learning curve but easily reproducible results. All patients who underwent MIS SHS fixation of extracapsular fractures were included in this study. Technique is shown in Figure 1. We collated data on all intertrochanteric hip fractures that were treated by a single surgeon series during period Jan 2014 to July 2015. Data was collected from electronic patient records and radiographs from Picture Archiving and Communication System (PACS). Surgical time, fluoroscopy time, blood loss, surgical incision length, post-operative transfusion, Tip Apex Distance (TAD) were analyzed. There were 10 patients in this study. All fractures were Orthopaedic Trauma Association (OTA) type A1 or A2. Median surgical time was 36 minutes (25–54). Mean fluoroscopy time was similar to standard incision sliding hip screw fixation. Blood loss estimation with MIS SHS can be undertaken safely and expeditiously for extracapsular hip fractures.

Periacetabular osteotomy (PAO) has been established as an effective technique to treat symptomatic hip dysplasia in young patients. Its role in treating borderline dysplasia and acetabular retroversion is evolving.

The aim of this study was to:

Examine the prospectively collected outcomes following a minimally invasive PAO in a large cohort of patients

This is a single-surgeon review of patients operated in a high-volume centre with prospectively collected data between 2013 and 2020, and minimal followup of six months. PAO was performed using a minimally invasive modified Smith Peterson approach. 387 patients were operated during the study period and 369 eligible patients included in the final analysis. Radiographic parameters were assessed by two authors (GS and KB) with interrater reliability for 25 patients of 84–95% (IntraClass Coefficient). Patient reported outcome measures (i-HOT 12, NAHS, UCLA and EQ-5D) were collected prospectively. Case note review was also performed to collate complication data and blood transfusion rates.

Radiological parameters improved significantly after surgery with Lateral centre-edge angle (LCEA) improving by 16.4 degrees and Acetabular index (AI) improved by 15.8 degrees.

Patient reported outcome measures showed significant improvement in post-op NAHS, iHOT and EQ5D at 2 years compared to pre-op scores (NAHS=30.45, iHOT=42, EQ5D=0.32, p=0.01). This significance is maintained over 2 years post procedure (p=0.001). There was no significant difference between the three groups (severe dysplasia, borderline dysplasia and acetabular retroversion).

Clinical outcomes showed an overall complication rate n=31, 8.3% (Major complication rate: n=3, 0.81%). Non-union rate: n=11, 2.96% of which 3 required fixation (0.81%). Hip arthroscopy post PAO: n=7, 1.9%. Conversion to THR: n=4, 1.1%. Blood transfusion requirement: n=46, 12.5%. No patient developed a major neurovascular injury.

In this large single-centre study, patients had radiological and reported outcome improvements following surgery. Overall, there was a low complication rate, providing further evidence of the safety and efficacy of PAO for ameliorating pain and long-lasting results in the management of symptomatic hip dysplasia.

Background

There are many different procedures described for the correction of hallux valgus deformity. Minimally invasive surgery has become increasingly popular, with clinical and radiological outcomes comparable to traditional open osteotomy approaches. There is increasing interest in hallux valgus deformity correction using third-generation minimally invasive chevron akin osteotomy (MICA) technique.

The anterolateral MIS-THA approach can be divided into the Modified Watson-Jones approach (MWJ) performed in the lateral position and the Anterolateral Supine method (ALS) performed in the supine position. Femoral preparation is flexible in stem selection in the MWJ method. On the other hand, the ALS method is more stable for placement on the acetabular implant.

Now we introduce novel anterolateral MIS approach named AL60, it makes use of the merits of both MWJ and ALS methods.

First metatarsophalangeal joint (MTPJ) arthrodesis plays a significant role in the management of symptomatic hallux rigidus. Several open and very few percutaneous techniques have been described in the literature. The authors present a new minimally invasive technique along with patient reported outcome, radiological parameters and a discussion on this novel technique.

A total of fifteen cases of first MPTJ arthrodesis were included in this prospective continuous series from September 2011 to June 2012. Mean age was 56 years and the indication for surgery was hallux rigidus in 13 of 15 cases. All patients underwent the same minimally invasive procedure by the same primary surgeon (AHS), 13 of 15 as day cases. Clinical outcome and patient satisfaction were assessed by the Manchester-Oxford Foot Questionnaire (MOXFQ) preoperatively and at most recent follow up. Radiographic and clinical evaluation of fusion was also assessed. No patients were lost to follow up and all scores were collected by an independent surgical practitioner to avoid bias. Mean follow up was six months (range 1 to 9 months).

The MOXFQ score for cases where fusion was achieved (n=14) improved from a mean 40/64 preoperatively to a mean 15/64 at last follow up (p=0.001). Patient satisfaction was overall very good.

This minimally invasive technique for first MTPJ arthrodesis is simple and can achieve results similar or better than open techniques in experienced hands. Further cases are needed to expand this series and evaluate for further complications.