title: Hip adduction/abduction deformity and apparent leg-length inequality.
abstract: The amount of apparent leg-length inequality attributable to given angles of hip adduction/abduction has been expressed quantitatively. The inequality is related to the sine of the angle of adduction/abduction and the distance between the centers of the femoral heads. In a study of 50 adults, the mean figure for this distance in men and women was 18.6 cm. As a rough guide, each 10 degrees of deformity up to 40 degrees produce approximately 3 cm of inequality.
mesh_terms: D000328:Adult; D000886:Anthropometry; D005260:Female; D006621:Hip Joint; D006801:Humans; D007592:Joint Diseases / Q000150:complications; D007870:Leg Length Inequality / Q000209:etiology*; D008297:Male