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Avascular necrosis of the femoral head in sickle-cell disease. A series from the Guinea Savannah of Nigeria



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Abstract

Of 899 patients with sickle-cell disease, aged between 6 and 28 years, who attended clinics in the Guinea Savannah of Nigeria in 1982 and 1983, 29 had symptoms of avascular necrosis of the femoral head. This group was studied in detail. Twenty-eight patients had haemoglobin-SS electrophoretic patterns and one had haemoglobin-SC. The male to female ratio was 1 to 1.6, and most of the patients were aged between 6 and 15 years at the onset of hip symptoms. These symptoms correlated with the radiographic lesions, but were not related to the age or sex of the patient. The radiographic lesions varied widely and were related to the age at onset of hip symptoms. A new radiological classification is proposed.

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