We reviewed 10 hips of 5 patients with osteochondroma growing in the upper femoral end to investigate the relationship between its occurrence and hip deformity. All cases were hereditary multiple exostosis with the site of osteochondromas extending from the subcapital area of the femur to the distal part of the lesser trochanter in 2 cases, from the middle of the femoral neck to the distal part of the lesser trochanter in 2 cases, and localized on the lesser trochanter in 1 case.
coxa valga, acetabular dysplasia and osteoarthritis occurred. The osteochondroma growing in the proximal femur may cause deformity and incongruity of the hip joint and lead to osteoarthritis.
