2017 Volume 36 Issue 2 Pages 103-106
Objective: To examine the mid-term results of transtrochanteric anterior rotational osteotomy (ARO) for subchondral insufficiency fracture of the femoral head (SIF) in young adults.
Methods: We reviewed 10 hips in nine young patients who underwent ARO for SIF between 2000 and 2016 (mean age 25 years, 7 males; 2 females). The mean follow-up duration was 4.4 (2.0-10.8) years. Clinicoradiological assessments were performed using the Japan Orthopaedic Association (JOA) score and sequential radiographs.
Results: All of the 10 hips had survived at the final follow-up. The mean preoperative JOA score was 61.3 (range, 41 to 76), which significantly improved to 96.5 (range, 88 to 100) at the final follow-up. A mean postoperative intact ratio (intact area of the femoral head/weight-bearing area of the acetabulum) of 93% was achieved with a mean femoral neck-shaft varus angle of 11° (range, 3.0 to 18°). No hips showed postoperative progression of collapse at the anteriorly rotated fractured lesion.
Conclusion: The results of current cases suggest that ARO should be considered as a surgical option for SIF in young adults.
