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Abstract
Coxa vara refers to a decreased femoral NSA < 110º in which the angle varies inversely with the age of the patient, from 150º in the newborn, 126º in the adult, to 120º in the aged individuals.
Coxa vara may be clinically classified according to the aetiology into congenital, developmental, dysplastic or traumatic. It may also be classified by the anatomic site, which may be at the physis or in the trochanteric or subtrochantericarea. Determination of both location and the cause is important for the prognosis. Coxa vara occurring at the physis is often progressive and rarely improves. Coxa vara that occurs distal to the physis is usually traumatic or congenital.The traumatic type improves; the congenital type does not. Evaluation should include a search for a family history of similar deformity, a history of trauma or infection, and evidence of associated skeletal abnormality.