Femoroacetabular Impingement: Do Outcomes Reliably Improve with Surgical Dislocations?
Femoroacetabular impingement is a motion-based concept of conflict that occurs secondary to morphologic abnormalities of the proximal femur and/or acetabulum. Creating impingement-free motion through restoration of normal morphology serves as the goal of joint-preserving procedures. We retrospectively reviewed the short-term functional and radiographic outcomes of 46 patients (48 hips) with femoroacetabular impingement treated with a surgical dislocation and restoration of offset. The average Merle D’Aubigné-Postel score improved from a preoperative of 13 (range, 7–16 ± 1.7) to a postoperative score of 16.8 (range, 12–18 ± 1.3). Creating impingement-free motion via a surgical dislocation improves symptoms in patients with limited radiographic signs of arthritis who are experiencing impingement-related hip pain.
Level of Evidence: Level IV, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.
- 12.MacDonald SJ, Garbuz D, Ganz R. Clinical evaluation of the symptomatic young adult hip. Semin Arthroplasty. 1997;8:3–9.Google Scholar
- 13.Maquet GJ. Biomechanics of the Hip. New York, NY: Springer-Verlag; 1984.Google Scholar
- 14.Merle D’Aubigne R, Postel M. Functional results of hip arthroplasty with acrylic prosthesis. J Bone Joint Surg Am. 1954;36:451–475.Google Scholar
- 17.Pauwels F. Biomechanics of the Normal and Diseased Hip. Berlin, Germany: Springer-Verlag; 1976.Google Scholar