FEATURES OF THA IN PATIENTS WITH HIGH CONGENITAL HIP DISLOCATION

Abstract

There are a fair number of papers presenting the outcomes of total hip arthroplasty with shortening subtrochanteric osteotomy in neglected hip dislocation. In most of them the authors used long modular stems or Wagner stems as a femoral component. The reports describing the outcomes of such procedures with standard femoral stems are rather rare.The purpose of this study was to evaluate short-term and medium-term outcomes of total hip arthroplasty with standard femoral stems and shortening subtrochanteric osteotomy for treatment of high hip dislocation.Materials and methods. From 2010 to 2016 the authors performed 18 hip arthroplasties with shortening subtrochanteric osteotomy in 16 patients with high hip dislocation. All patients were clinically evaluated using Harris Hip Score and radiography prior to and after the surgery.Results. The mean Harris Hip Score significantly improved compared to preoperative values from 39.7±1.4 to 84.7±1.6. At mean follow-up of 24±2.4 mounts the authors observed 2 case of nonunion at osteotomy site and 1 case of transient nerve palsy. Revision surgery was performed in 2 patients due to nonunion. The mean limb lengthening was 3.65±0.21 cm.Conclusion. Our data demonstrated that total hip arthroplasty with subtrochanteric osteotomy is an effective technique for treatment of Crowe type III-IV congenital hipdislocation with high rate of successful fixation on the typical femoral stem, healing of osteotomy site and satisfactory shortand medium-term clinical outcomes. The non-modular tapered stem provides sufficient stability in distal and proximal parts of the femur. The use of standard tapered stem allows to achieve good healing rates of the osteotomy.

Keywords

• high hip dislocation
• total hip arthroplasty
• shortening femoral osteotomy