Purpose

To explore the relationship in terms of time scale between pre-operative expectations and postoperative outcomes and satisfaction after Hallux valgus surgery.

The incidence of venous thromboembolism (VTE) is unknown in elective foot and ankle surgery. In March 2010 we surveyed the current practice in VTE prophylaxis in elective foot and ankle surgery amongst members of the British Orthopaedic Foot and Ankle Society (BOFAS).

The response rate was 53%. The total the number of elective foot and ankle operations performed by the surveyed group was 33,500 per annum. The perceived incidence of DVT, PE and fatal PE was 0.6%, 0.1% and 0.02%. In our study the number of patients needed to treat to prevent a single fatal PE is 10,000 although this figure is open to significant bias.

The National Institute for Health and Clinical Excellence (NICE) recently published guidelines on reducing the risk of venous thromboembolism in surgical patients. These guidelines cover all surgical inpatients and uses data extrapolated from other groups of patients. We question the applicability of these guidelines to patients undergoing elective foot and ankle surgery. We consider that this data justifies the prospective study of the incidence of VTE in patients undergoing elective foot and ankle surgery, without the use of chemical thromboprophylaxis.

Aims

To establish the cost of primary hip (THR) and knee (TKR) arthroplasty in an elective orthopaedic centre in the UK and to compare it with current government reimbursement to NHS hospitals and the costs in North America.

Introduction: Since the introduction of payment by results in the NHS in 2004, the accurate recording of services performed has played a crucial role in reimbursement to hospital trusts by primary care trusts (PCT). Failure to accurately charge for these services causes a shortfall in funding received. Under the new reimbursement system, similar treatments are grouped together under the same tariff and referred to as a Healthcare Resource Group (HRG). Coding is the assignment of procedures to HRG’s. We aim to assess the accuracy of coding performed at our institution and link this directly to the funds received from the PCT. Foot and ankle surgery has a particular interest in coding due to the multiple codes that are utilised to code for one procedure.

Method: We looked at 40 consecutive operations performed at our institution. We compared the codes assigned by the surgeon placing the patient on the waiting list, which were the codes seen directly on the operating list with the final codes given to the PCT. We compared the two codes and looked at the difference in final costing.

Results: There were a total of 75 codes from the 40 operations assigned by the surgeon compared with 103 codes assigned by the coding staff. Although most of the codes were different when the final costing data was generated there was little difference in the overall costs.

Discussion: The importance of accurate coding has become paramount in the current national health service funding. We have shown large discrepancies between the codes the surgeon produces and the final code given to the PCT. Although, in our unit, this has not led to differing final reimbursement figures, it does have the potential to create inaccuracies with a failure to pay for work performed. We will present our data and describe the correct coding for common procedures in foot and ankle surgery, to allow accurate reimbursement.

Introduction: Sciatic nerve blocks have been used to reduce post-operative analgesia and allow early discharge for patients undergoing foot and ankle surgery. This study aims to identify utilisation of this procedure and to ascertain if there is a consensus amongst surgeons as to best practise with regards to who performs the block and how it is performed.

Method: We surveyed current committee members of the American and members of the British orthopaedic foot and ankle surgery societies (AOFAS and BOFAS).

Results: More than half of those who responded perform over 90% foot and ankle surgery. 77% performed sciatic nerve blockade through the popliteal approach (26% used the subgluteal approach). The most common position was supine with 80% being performed by the anaesthetist. 45% never used ultrasonography to detect the position of the nerve and variable levels of nerve stimulation were used. 30% used an infusion catheter with 20% allowing discharge to home with the catheter. 42% of surgeons where happy to have the block performed under full anaesthesia. The commonest complication cited was prolonged anaesthesia, the majority of which resolved. Performing the block awake or sedated did not seem to alter the number of complications seen.

Discussion: This study represents a current practice review of sciatic nerve blocks performed in foot and ankle surgery and shows a variety of techniques used. Although this is now a widely used block, no consensus has been reached as to the use of ultrasound, level of nerve stimulation or whether the patient needs to be awake for the procedure. The use of infusion catheters (especially after discharge) has not been widely utilised, especially amongst UK surgeons.

Introduction: The importance of isolated gastrocnemius contracture in disorders of the foot and ankle has been established in recent years. The aim of this study is to describe the proximal anatomical approach to the medial and lateral heads of gastrocnemius and to compare the sizes of the medial and lateral heads of the gastrocnemius.

Method: 15 cadaveric knees were dissected using a posterior approach 1cm below the level of the skin crease. Proximity of cutaneous nerves and major vessels was noted. The heads of the gastrocnemius were dissected from their origin and the cross sectional anatomy was defined.

Results: Approach to the medial head of gastrocnemius is safe. Conversely the variable anatomy of the nerves in the approach to the lateral head means that extreme care must be taken if complications are to be avoided. The aponeurosis of the medial head of gastrocnemius was 2.4 times the cross-sectional area compared to the lateral head.

Conclusion: In this study we describe a safe posterior approach to the medial aponeurosis of gastrocnemius and also describe the different sizes of the medial and lateral gastrocnemius heads. We propose that the release of the medial head alone is safe and likely to be efficacious in the surgical treatment of isolated gastrocnemius tightness that has failed non-operative treatment.

Introduction: Since the first meeting in 1875, and the subsequent introduction of the concept of evidence based medicine in the 1990s, the journal club has become an integral part of keeping abreast with current literature.

There is no study assessing orthopaedic journal clubs amongst training programs across the UK. This study had two aims: the first was to determine whether journal clubs still play an important part in orthopaedic training programs, the second was to evaluate the frequency, format and goals of journal clubs conducted in orthopaedic training programs in the UK.

Method: We surveyed fifty seven hospitals across the UK. This included hospitals from all the orthopaedic teaching regions of which twelve were teaching hospitals and forty five district general hospitals.

Results: A total of 57 hospitals were surveyed. Of these hospitals 28/57(49%) had a journal club programme in place. On average journals clubs were undertaken once a month and lasted about 1 hour. Most occurred during the working day and were chaired by a consultant. Specialist registrars presented the vast majority of papers (average of 1.9 each per session), with the JBJS Br being the most widely used journal (100% of journal clubs).

Of the twelve teaching hospitals questioned, five (42%) had journal clubs, and twenty three of the forty five (51%) district general hospitals had journal clubs. The average number of articles critically appraised by trainees who attended journal clubs was 5 (0–15) compared to 3 (0–18) in those not attending a journal club.

When asked whether there was any alternative way in which a trainee might otherwise learn how to critically appraise an article, fourteen suggested online journal forums and eighteen suggested self-directed learning or personal study.

Although only 49% of hospital had journal clubs, 88% of trainees believed that it formed a valuable part of training and 56% thought it should be compulsory.

Discussion: This study shows that journal clubs occur in around half of the orthopaedic departments surveyed across the country. This is despite the importance trainees’ associate with journal clubs being part of their training.

In contrast, studies from North America show that a regular journal club occurs in 99% of residency programs.

It may therefore be suggested that for those trainees who do not attend a journal club, an alternative method to learning the skills of critical appraisement may have to be sort. One suggested modality is through on-line journal clubs or forums within regions which trainees may be encouraged to undertake from their regional directors.

Aim: Our aim was to determine the in-hospital costs of total hip replacement (THR) and total knee replacement (TKR), and compare them to their reimbursement under the national tariff system and to our North American colleagues.

Methods: In 2004 an elective orthopaedic centre was set up in South West London which performs mainly primary lower limb arthroplasty. We used a retrospective analysis of financial statements from September 2004- December 2005 inclusive to establish operative costs (including implant), perioperative costs and post operative costs until discharge.

Results: A consecutive series of 1538 primary TKR patients (mean age = 72.2) and 1118 primary THR patients (mean age = 70.8) was studied from September 2004 to December 2005 accounting for 88% of the workload. Average post operative stay was 6.5 days for TKRs and 5.7 for THRs and 66% of the patients were ASA grade III or over. The cost including implant of a THR was £6054, and for a TKR it was £6499. After adjustment to allow direct comparison to tariff, our THR cost is 2.3% less than and 1.0% more than the 2004/5 and 2005/6 tariffs respectively. Our adjusted TKR cost is 5.0 % and 4.2% less than the 2004/5 and 2005/6 tariffs respectively. Our cemented and uncemented THR costs are 8.0% less than and 6.6% more than their respective tariffs introduced for the first time in 2005/6. Overall there is no large discrepancy between our THR/TKR costs and tariff reimbursements.

Discussion: Although in our unit our costs are similar to the re-imbursements used in the UK, we question the ability of general NHS hospitals in the UK to perform at these levels and prices for three reasons. Firstly, our high volume of joint replacement activity has enabled us to negotiate the most favourable implant prices in the UK. Secondly, length of stay in our unit is approximately 60% of national average. Thirdly, our unit is run without many of the infrastructure costs of a general hospital as well as the cost incurred by training junior staff and research and development. Costs were also found to be favourable compared with our American colleagues and similar to our Canadian colleagues.

Conclusion: Our elective only orthopaedic centre provides a cost effect way of performing primary arthroplasty surgery while maintaining high standards of care and twenty-four hour intensive care cover. We believe this cost effectiveness may be unachievable in general NHS hospitals in the UK.

Background: The incidence of neurological symptoms due to spinal stenosis in patients with achondroplasia is reported to be as great as 38%¹. These symptoms most commonly occur in the 4^th decade and myelography and CT myelography are most commonly described in evaluation of the stenosis. Difficulty arises in localisation of stenosis in patients presenting with neurological deficit². The value of MRI of the cervicomedullary junction has been reported in achondroplasia but it has not yet been evaluated in the investigation of spinal stenotic symptoms. The aim of this study was to review our experience of whole spine imaging in patients with achondroplasia that presented with symptoms and signs of neurological deficit.

Methods: We retrospectively reviewed the clinical notes and radiological imaging of 10 consecutive achondroplastic patients (3F:7M, mean age 31.7 years, range 13 to 60yrs) that presented to our unit with neurological compromise between 1998 and 2003. All patients had whole spine MRI at the time of presentation. Recorded from the notes were age and sex, and whether symptom pattern was radiculopathy, claudication or paresis. All radiological levels of stenosis on MRI were documented.

Results: Four patients presented with spinal paresis, four with neurogenic claudication, and two with radiculopathy. MRI confirmed that each patient had at least one region (cervical, thoracic or lumbar) of significant spinal stenosis. In six of the patients an additional region of significant stenosis was identified. All ten patients had lumbar stenosis but this was only the primary site in six of the ten. In the other four patients two had the dominant stenosis in the thoracic spine, one in the cervical spine and one at the foramen magnum – the clinical symptoms correlated with the dominant site in each of these four cases.

Conclusion: MRI was a useful tool for assessment of neurological compromise in the patients with achondroplasia in our study. All ten patients had classical lumbar stenosis on MRI but this was only the dominant site of stenosis in six of the ten cases. The MRI and clinical findings need to be evaluated together to ensure correct surgical treatment.

Introduction and Aims: Retrospective analysis of all uncemented massive endoprostheses inserted at our unit in the management of primary bone tumors with a minimum follow-up of five years.

Method: The case notes and radiographs of all patients were reviewed. The group consisted of a total of 52 patients, of which four (8%) were lost to follow-up. Kaplan-Meier Cumulative Survival Graphs were created for mortality, amputation, revision and infection for the whole group and for each individual prosthesis.

Results: The mean follow-up was seven years (63–107 months). The average age at time of insertion was 19 years; 26 patients were skeletally immature. The majority of implants were distal femoral (31) and proximal tibial (14). Osteosarcoma was the most common diagnosis.

The rate of infection was 12.5%, aseptic loosening 6%, amputation due to local recurrence 10% and the mortality 21%.

All the deaths occurred within three years of the implant being inserted and were all due to systemic progression of the disease. The amputations for local recurrence occurred throughout the follow-up period, the latest being at 71 months. Revisions for infections and aseptic loosening all occurred early (within three years). All cases of aseptic loosening occurred in distal femoral replacements (10%) and were related to divergent canals. Proximal tibial replacements had the highest rate of infection (23%). Rates of infection were not higher in the minimally invasive grower (12.5 %) when compared to the group as a whole.

Conclusion: We have shown a reduced rate of aseptic loosening (6%), particularly in the skeletally immature, when compared to our unit’s results for cemented fixed hinged prostheses. The uncemented prosthesis is a successful implant that needs careful consideration, especially in the skeletally immature. Careful pre-operative planning and surgical technique are of the utmost importance.

Retrospective analysis of all uncemented massive endoprostheses inserted at our unit in the management of primary bone tumours with a minimum follow up of 5 years.

Methods. The case notes and radiographs of all patients were reviewed. The group consisted of a total of 52 patients of which 4 (8%) were lost to follow up. Kaplan-Meier Cumulative Survival Graphs were created for mortality, amputation, revision and infection for the whole group and for each individual prosthesis.

Results. The mean follow up was seven years (63–107 months). The average age at time of insertion was 19 years; twenty-six patients were skeletally immature. The majority of implants were distal femoral (31) and proximal tibial (14). Osteosarcoma was the commonest diagnosis.

The rate of infection was 12.5%, aseptic loosening 6%, amputation due to local recurrence 10% and the mortality 21%.

All the deaths occurred within 3 years of the implant being inserted and were all due to systemic progression of the disease. The amputations for local recurrence occurred throughout the follow up period, the latest being at 71 months. Revisions for infections and aseptic loosening all occurred early (within 3 years). All cases of aseptic loosening occurred in distal femoral replacements (10%) and were related to divergent canals. Proximal tibial replacements had the highest rate of infection (23%). Rates of infection were not higher in the minimally invasive grower (12.5 %) when compared to the group as a whole.

Conclusion. We have shown a reduced rate of aseptic loosening (6%), particularly in the skeletally immature, when compared to our units results for cemented fixed hinged prostheses. The uncemented prosthesis is a successful implant that needs careful consideration, especially in the skeletally immature. Careful preoperative planning and surgical technique are of the utmost importance.

We performed a retrospective analysis of massive endoprostheses inserted at our unit in the management of Giant Cell Tumours of the distal femur with a minimum follow up of 5 years.

Methods. Twenty-five massive articulating endoprostheses were inserted between 1986 and 1998 at our unit. The case notes and radiographs of all patients were reviewed. A functional and radiological analysis was performed using the MTOS and ISOLS scoring systems. Kaplan-Meier Cumulative Survival Graphs were created for amputation and revision for septic and aseptic loosening. Two patients had died (8%) from unrelated causes. No cases were lost to Follow Up.

Results. Massive replacements were performed for stage 3 (aggressive), pathological fracture (30%) or recurrent disease. The mean follow up was twelve years (range 5–18 years). The average age at time of insertion was 37 years; no patients were skeletally immature. Fifteen implants were fixed hinge devices and ten were rotating hinge devices with HA collars (since 1993). No cases were revised for sepsis. There had been no cases of recurrent disease or amputation. There have been six (26%) revisions for aseptic loosening. Only one of these occurred in the rotating hinge and HA collar group. In the fixed hinge group (38% aseptic loosening rate) revision occurred after an average of six years. There have also been five re-bushings all of which have occurred in the fixed hinge group. The average MTOS score was 74 (range 47–97).

Conclusion. Young patients with fixed hinged devices developed a high incidence of aseptic loosening. They also had a significant rate of re-bushing. Results of the rotating hinge prosthesis with HA collar were much more promising. Functional scores were good after a period of twelve years despite the young age group.