JOURNAL ARTICLE

Treatment of high hip dislocation with a cementless stem combined with a shortening osteotomy

Ali Bulent Baz, Volkan Senol, Serdar Akalin, Ozkan Kose, Ferhat Guler, Adil Turan
Archives of Orthopaedic and Trauma Surgery 2012, 132 (10): 1481-6
22684740

INTRODUCTION: The purpose of this study was to review the clinical and radiographic outcomes and report the major complications in a group of hips with Crowe type IV developmental dysplasia that underwent reconstruction with a cementless total hip arthroplasty and a transverse subtrochanteric shortening osteotomy fixed with locking compression plate and screws.

METHOD: Fifteen consecutive patients (21 hips) who had coxarthrosis secondary to Crowe Group IV developmental dysplasia of the hip were treated with a cementless prosthesis and a transverse subtrochanteric osteotomy fixed with locking compression plates at a mean age of 41. The mean follow-up period was 5 years. The acetabular cup was placed in the position of the anatomical hip center in every patient. Subtrochanteric femoral shortening osteotomy was fixed with plates and screws in all patients.

RESULTS: The mean Harris hip score improved from 36.2 ± 9.8 points to 90.8 ± 2.5 points. Trendelenburg sign was positive in seven hips and two patients complained about continuing anterior thigh pain at the final follow-up. There was no infection. No cases of nonunion were encountered. Two patients had dislocation on early postoperative period (15th and 20th postoperative day). Of these patients, femoral head was changed to 28 mm with stem revision in one patient, and one had acetabular component revision with use of constrained acetabular liner. There was one permanent sciatic nerve palsy. One patient had implant related pain during lying laterally. Plate and screws were removed at postoperative 16th month.

CONCLUSION: Cementless total hip arthroplasty combined with subtrochanteric osteotomy for the treatment of patients with Crowe Group IV developmental dysplasia of the hip is an effective technique to reduce the hip to its original acetabular location and restore the rotational deformities. Plate and screw fixation is a viable option for a secure and stable fixation of femoral stem after subtrochanteric osteotomy.

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