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  • Title: Remodelling after pinning for slipped capital femoral epiphysis.
    Author: Jones JR, Paterson DC, Hillier TM, Foster BK.
    Journal: J Bone Joint Surg Br; 1990 Jul; 72(4):568-73. PubMed ID: 2380205.
    Abstract:
    We assessed 70 hips at an average of 7.1 years after pinning for slipped upper femoral epiphysis to determine the frequency of remodelling, what factors influence it and its effect on the clinical outcome. Remodelling was defined by a new classification of the anterior femoral head-neck profile as seen on the lateral radiograph. Remodelling occurred in 50% of hips with a head-shaft angle of 30 degrees or more; the probability of remodelling was significantly less the greater the degree of slip, but was significantly increased if the triradiate cartilage was open at the time of presentation. We found no significant effect for age, sex, weight or length of symptoms. The range of internal rotation was significantly greater in those hips that remodelled. We support the treatment of moderate slips in skeletally immature patients by pinning in situ, since the probability of satisfactory remodelling was 75% for slips of 40 degrees or less.
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