[Etiopathogenesis of juvenile osteochondrosis of the hip. Apropos of 2 cases observed in bicorial twins].

Two cases of juvenile osteochondrosis of the hip in biovular twins form the basis for bibliographical research into the aetiopathogenesis of the disease. Although pathogenesis is now known to be a more or less severe trophic disturbance of the head of the femur caused by faulty arterial flow through the local circulation, the prime causes of such circulatory arrest remain doubtful. Critical examination of studies carried out on the question would seem to point to a Perthes disease aetiology which would fit most of the more authoritative theories.