NCT02676271

The Long Term Outcome of Varus Derotational Osteotomy for Legg-Calvé-Perthes' Disease

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 35 (actual)
• Sponsor: Assaf-Harofeh Medical Center · Other Government
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

Background: Varus derotation osteotomy (VDRO) is one of the most popular surgical treatments for Legg-Calvé-Perthes disease yet its long term results have not been assessed. Our purpose was to determine the long term clinical and radiographic outcomes of these patients. Methods: Forty patients (43 hips) who had undergone VDRO for LCPD who participated in a long term follow-up study a decade ago were approached for the present study. All patients were treated in our institution during 1959 to 1983 with proximal VDRO. The patients were invited to for a medical interview and a physical examination. They were also asked to fill out questionnaires and to provide or undergo a standing anteroposterior (AP) pelvic and a lateral hip radiographs during the visit. Patients were asked to self-grade their hip pain as none, mild, moderate or severe and to grade their back pain using the Visual Analogue Scale (VAS) between 0-10. Details regarding daily function, physical activity, work status and family history were obtained. All participants completed the Harris Hip Score (HHS) with a maximum score of 100 and the Short Form-36 which is composed of 8 sections and has a maximum score of 100. The physical examination included an assessment of the hip range of motion, leg length discrepancy and the presence of a Trendelenburg sign. Radiographic parameters evaluated were the Tonnis grade (with a score between 0-3), head size ratio, and the center-edge (CE) angle.

Conditions

• Legg-Calvé-Perthes Disease

Interventions

Type	Name	Description
PROCEDURE	Proximal varus derotational osteotomy	The purpose of surgery was to relocate the protruded, deformed femoral head from its lateral position back to the acetabulum to achieve containment. Surgery was preceded by a hip arthrography with dynamic examination to find the suitable containment position and plan the correct osteotomy angles accordingly. A sub trochanteric osteotomy was performed then after in an open or closed wedge form, with fixation in an angle that gave best coverage.

Timeline

• Start date: 2015-03-01
• Primary completion: 2015-07-01
• Completion: 2015-10-01
• First posted: 2016-02-08
• Last updated: 2016-02-08

Locations

1 site across 1 country: Israel