Instructional Course Lecture   |    
Slipped Capital Femoral Epiphysis*†
Randall T. Loder, M.D.‡; David D. Aronsson, M.D.§; Matthew B. Dobbs, M.D.#; Stuart L. Weinstein, M.D.#
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An Instructional Course Lecture, American Academy of Orthopaedic Surgeons
*No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article. No funds were received in support of this study.
†Printed with permission of the American Academy of Orthopaedic Surgeons. This article, as well as other lectures presented at the Academy's Annual Meeting, will be available in March 2001 in Instructional Course Lectures, Volume 50. The complete volume can be ordered online at www.aaos.org, or by calling 800-626-6726 (8 a.m.-5 p.m., Central time).
‡Shriners Hospital for Children, 2025 East River Parkway, Minneapolis, Minnesota 55414. E-mail address: rloder@shrinenet.org.
§University of Vermont, Robert T. Stafford Hall, Room 434B, Burlington, Vermont 05405-0084. E-mail address: daronsso@zoo.uvm.edu.
#University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Suite 01026 JPP, Iowa City, Iowa 52242. E-mail address for S. L. Weinstein: stuart-weinstein@uiowa.edu.

J Bone Joint Surg Am, 2000 Aug 01;82(8):1170-1170
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Slipped capital femoral epiphysis is a well known disorder of the hip in adolescents that is characterized by displacement of the capital femoral epiphysis from the metaphysis through the physis. The term slipped capital femoral epiphysis is a misnomer because the epiphysis is held in the acetabulum by the ligamentum teres, and thus it is actually the metaphysis that moves upward and outward while the epiphysis remains in the acetabulum. In most patients, there is an apparent varus relationship between the head and the neck, but occasionally the slip is into a valgus position, with the epiphysis displaced superiorly in relation to the neck106,109. In the vast majority of cases, the etiology is unknown. Although the condition may be associated with a known endocrine disorder71,77,129, with renal failure osteodystrophy74, or with previous radiation therapy75,77, this Instructional Course Lecture deals only with idiopathic slipped capital femoral epiphysis.
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