Two Cases of Coxa Vara due to Constitutional Disorders of Bone

We performed Pauwels Y-osteotmy on two cases of coxa vara due to constitutional disorders of bone and obtained good results. The first case, a 5-year-old girl, of spondyloepiphyseal dysplasia congenita, was admitted with chief complaints of limping and growth disturbance.On examination, flexion contracture of her both hips and marked lumbar lordosis were noted. On roentgenogram, her both hip joints showed coxa vara. Pauwels Y-osteomy with extention osteotomy was performed on her both hips. Satisfactory improvement of flexion contracture of her hips and lumbar lordisis has been obtained and her limping disappered. The second case, a 3 1/3-year-old girl who was diagnosed as metaphyseal chondrodysplasia (Schmid type), was admitted to our hospital with chief complaint of limping. On roentgenogram, her right hip showed coxa vara. Pauwels Y-ostetomy was performed and after the operation her walking pattern was improved.Coxa vara due to constitutinal disorders of bone seems to be developmental, so the early corrective operation is necessary and the correction should be in excess as to reorient the vertical physis to a more normal horizontal position.