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CompletedNCT02676271Updated Feb 8, 2016

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

An observational study in Legg-Calvé-Perthes Disease, sponsored by Assaf-Harofeh Medical Center. Completed at 1 site in Israel. Per ClinicalTrials.gov, last updated 2016-02-08.

Sponsored by Assaf-Harofeh Medical Center · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
35
Sex
All
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Study 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.

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Conditions studied

  • Legg-Calvé-Perthes Disease
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In context

Legg-Calve-Perthes Disease

31 studies on the registry are indexed under Legg-Calve-Perthes Disease; 7 are open to participants now.

This study's enrollment of 35 is below the median of 100 across 11 observational studies indexed under Legg-Calve-Perthes Disease.

Browse Legg-Calve-Perthes Disease studies →

Lead sponsor

Assaf-Harofeh Medical Center is the lead sponsor of 258 studies on the registry; 40 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Forty patients (43 hips) who had undergone VDRO for LCPD who participated in a long term follow-up study a decade ago. All patients were treated in our institution during 1959 to 1983 with proximal VDRO.

Inclusion criteria

  • All patients were treated in our institution during 1959 to 1983 with proximal VDRO and were examined a decade ago

Exclusion criteria

Exclusion Criteria:

-

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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
35 participants (actual)
Patient registry
No

Interventions

  • ProcedureProximal 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.

    Also known as: Femoral plate

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What researchers measure

Primary outcomes

  1. Clinical outcomes

    The hip status was assessed by the Harris Hip Score (HHS)

    Time frame: a follow-up 42.5 years from surgery

  2. Clinical outcomes

    The Short Form-36 (SF-36) was used to asses the general well being

    Time frame: a follow-up 42.5 years from surgery

  3. Radiographic outcomes

    The degenerative changes were assessed by The Tonnis grade.

    Time frame: a follow-up 42.5 years from surgery

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Study locations

1 site
  • Assaf Haroffeh Medical center
    Zerifin, 70300, Israel
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 8, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02676271
Lead sponsor
Assaf-Harofeh Medical Center
Responsible party
Assaf Harofeh MC (Noam Shohat, Assaf-Harofeh Medical Center) — Principal investigator
First posted
Feb 8, 2016
Start date
Mar 2015
Primary completion
Jul 2015
Completion
Oct 2015
Last update
Feb 8, 2016

Study contacts

Noam Shohat, MD
principal investigator · Tel Aviv University, Israel
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2016. You cannot join it, but the record below documents what was studied.

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