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  • Title: Slipped capital femoral epiphysis with severe vitamin D deficiency.
    Author: Skelley NW, Papp DF, Lee RJ, Sargent MC.
    Journal: Orthopedics; 2010 Dec 01; 33(12):921. PubMed ID: 21162499.
    Abstract:
    Slipped capital femoral epiphysis is a relatively common disorder in late childhood and early adolescence, with an incidence in the United States of approximately 10 per 100,000. Although clinicians have theorized that contributing factors to the development of slipped capital femoral epiphysis include 25-hydroxyvitamin D deficiency and other nutritional deficiencies, the roles of these factors have not been fully analyzed. This article presents a case of a morbidly obese 13-year-old African-American boy who presented with sudden worsening of chronic hip pain and was diagnosed with stable, bilateral, grade-III slipped capital femoral epiphysis and severe vitamin D deficiency. He was initially treated with bilateral single-screw percutaneous fixation, however, after continued pain and nonunion, a right valgus subtrochanteric osteotomy was performed in association with correction of his severe vitamin D deficiency. This procedure led to improvement of his hip function and successful resolution of the pain. Approximately 3 months after the second operation and vitamin supplementation, the patient had signs of union, and his weight bearing progressed without discomfort. Although the osteotomy provided substantial biomechanical advantage by changing the forces across the physis from shear to compressive, correction of the vitamin D deficiency was critical in providing metabolic capacity for bone healing. Vitamin D plays an important role in bone formation and development, but the level of 25-hydroxyvitamin D is not routinely measured during assessment and treatment of slipped capital femoral epiphysis patients. The early detection and proper treatment of vitamin D may assist in the treatment of patients with slipped capital femoral epiphysis.
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