The outcome of modified Dunn's procedure for moderate and severe slipped capital femoral epiphysis

mohamad osman, mohamad sebaei, adel abdel azim Ahmad


The aim of this study was to evaluate the outcome of 20 children with moderate-severe slipped capital femoral epiphysis (SCFE) with open physes, treated by the modified Dunn's procedure, as regards:  intraoperative findings, clinical and  radiographic outcomes, and postoperative complication rate.

PATIENTS AND METHODS: A prospective study was executed , between 2012 and 2016, for treating  moderate-severe SCFE with modified Dunn  procedure  in 20 hips of 20 patients,  with a mean age of 13.6 ± 3.4 years  (range: 10 – 16.5 years). Seven cases were unstable SCFE.  We excluded mild SCFE, endocrinopathy and renal cases.


RESULTS: The mean follow-up was 19 ± 9.2 months (range: 12 - 36 months). Radiologically. all  parameters showed significant improvement; with the mean slip angle corrected from 61º± 14.4 preoperatively to 10º±10.1 postoperatively, the mean alpha angle corrected from 90.2±21º  preoperatively to 49.1± 8º postoperatively and  the mean femoral neck length difference was 8.1 ± 6 mm.  Functionally, the mean Harris hip score (HHS) was 86.2 ± 9.6 and the Heyman and Herndon score was excellent-good in 15 cases (75%), fair in two, poor in two and failed in one. Postoperative major complications occurred in only two cases (10%); AVN in one and secondary FAI in another case

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