Osteochondroma of the femoral neck secondary to a slipped upper femoral epiphysis.

Traumatic osteochondromas may develop following damage to the growth plate, but these lesions are rare. Osteochondromas developing secondary to a slipped upper femoral epiphysis (SUFE) have not been previously described. We report such a case and discuss its pathogenesis in relation to the possible aetiologies of primary osteochondromas and SUFE.