Abstract
Coxa Magna is characterized roentgenographically by enlargement of the femoral head and neck. 30 cases of congenital dislocation of the hip treated by open reduction between 1955 and 1975 in our clinic were followed on an average of 5 years and 8 months after the operation. Out of this group, 10 cases showed no deformity of the femoral head, 16 cases did Coxa Magna, 4 cases did Coxa Plano-Magna.
The incidence of Coxa Magna was low in the group of those treated by open reduction with detortion-varus osteotomy followed by cast application in a slightly abducted and flexed position of the hip.
As a conclusion, the occurrence of Coxa Magna mainly seems to depend on the amount of pressure between the acetabulum and the femoral head.
