Treatment of severe Perthes disease remains a major challenge. Various surgical options exist for containment. We describe the Birmingham interlocking triple pelvic osteotomy (BITPO) and report the results at skeletal maturity. We reviewed 22 hips in 21 consecutive patients with severe Perthes who had the BITPO. There were 16 males and 5 females. The mean age at presentation was 7 years 7 months. Seventeen hips were Herring group C and five were Herring group B. Six patients had four head-at-risk signs (HARS), 9 had three HARS, 4 had two HARS and 3 had a single HARS. The mean age at operation was 8 years 2 Months. Clinical, radiological and functional evaluations were under taken on these patients who have since reached skeletal maturity. The minimum follow up was 6 years. Average age at review was 18 years 8 months (range 16–25). Two patients have since had hip resurfacing, and two patients a double femoral osteotomy and one patient a surgical dislocation of the hip and valgus osteotomy. The average Harris Hip Score pre-operatively was 52, which improved to a mean score of 82. Eleven hips were classified as Stulberg I/II (50%), 9 hips Stulberg III/IV (41%) and 2 hips Stulberg V (9%). The average increase in Centre-Edge angle was 31 degrees and there was an average improvement of 24.6% in the head coverage. At follow up the average abduction was 31 degrees (improvement of 8.5 degrees), internal rotation 22 degrees (10.5 degree improvement) and flexion 106 degrees (11 degree improvement). We conclude that the Birmingham interlocking triple pelvic osteotomy provides excellent coverage of the femoral head in severe Perthes disease, recaptures and remoulds the deformed head and avoids retroversion of socket. Good results in severe Perthes disease are maintained beyond skeletal maturity.
Hip and knee arthroplasty has been associated with relatively high rates of thromboembolic events and the majority of UK orthopaedic surgeons use at least one form of prophylaxis. Of the many different subgroups of thromboembolic rates that are commonly presented in the literature, symptomatic proximal deep vein thrombosis (spDVT) and fatal pulmonary embolism (fPE) are perhaps the most important clinical outcomes. To determine the effectiveness of common chemical and mechanical prophylactic methods in preventing spDVT and fPE in patients undergoing primary hip and knee arthroplasty. A systematic review of the literature from 1981 to December 2002 was performed. Predetermined inclusion and exclusion criteria were applied. Studies where more than one method of prophylaxis was used were excluded from analysis. For each individual method of prophylaxis, data was extracted, combined and converted to give estimates of the rates of spDVT, fPE and major bleeding events. Absolute risk reduction estimates for spDVT, fPE and major bleeding events were calculated by comparing the thromboembolic rates for each method of prophylaxis with using no prophylaxis of any kind. 992 studies were identified of which 162 met the inclusion criteria. No method of prophylaxis was statistically significantly more effective at preventing spDVT and fPE than using nothing. There were at least as many major bleeding complications as spDVTs. The number of fPEs prevented was very small. When complications such as major bleeding are considered, the evidence behind the use of any prophylaxis is unconvincing.
Numerous techniques have been described for ankle arthrodesis. Arthroscopic arthrodesis with internal fixation has evolved to reduce the complications associated with open arthrodesis. We present our technique of arthroscopic ankle fusion using two medial cannulated screws with specially designed dished washers The tibiotalar joint is debrided arthroscopically and internal fixation is achieved with two medial cannulated screws with designed dished washers. Seven ankle arthrodeses were performed on six patients; one underwent bilateral arthrodesis. All the patients suffered from OA (four post traumatic) and were aged between 53–61 (mean 55.4). There were four males and two females. The follow up ranged from 8–18 months (mean 10). All the patients achieved ankle fusion. Time for fusion ranged from 6 to 18 weeks, five fused within 12 weeks. Pre operative pain scores improved from 6–10 out of 10 (mean 7.2) to 1–3 out of 10 (mean 1.4) post-operative. Post-operative AAFOS ankle hind foot score ranged from 74–89 out of 100 (mean 81.8). One patient required further operations for adjustment of fixation and one suffered a stress fracture at the level of the proximal screw. This method of arthroscopic ankle fusion provides an effective alternative to open arthrodesis for selected patients with OA achieving good initial results.
The existence of various techniques of ankle arthrodesis shows that there are pros and cons in each method. We describe our experience of ankle arthrodesis using a paediatric angle blade plate.
10 ankle arthrodeses were performed in nine patients. All patients were reviewed independently in special clinics. The objective assessment was performed by detailed clinical examination and the subjective assessment was made including overall patient satisfaction. The American Orthopedic Foot and Ankle Society ankle/hind foot scoring system was used. The technique of ankle arthrodesis was similar in all patients using an anteromedial or anterolateral incision, preparation of articular surface and paediatric angle blade plate fixation with or without bone grafting. Time to union was assessed by clinical and radiological examinations.
Radiological union was achieved in nine patients in a mean time of 16 weeks. Fibrous union occurred in one patient. Eight patients were very satisfied with their treatment. The patient with fibrous union had a marginal improvement of symptoms with pain score improved from nine to seven. The mean AOFAS score was 84.
Ankle arthrodesis with a paediatric angle blade plate is a useful method of managing intractable cases of ankle arthritis. The technique is simple and effective with excellent success rate.
