PURPOSE To evaluate single screw fixation stability, in the treatment of slipped capital femoral epiphysis, as a function of screw thread distribution across the physis. STUDY DESIGN In vitro biomechanical study. METHODS Thirty porcine proximal femurs were sectioned through the physeal line and stabilized with a cannulated 7.3-mm stainless steel AO screw. The distal 16 mm of each screw was ...

Limb shortening is a problem associated with surgery for osteosarcoma of the lower extremity in adolescents, as the tumors frequently occur near the epiphysis. Herein we report the use of a less invasive stabilization system (LISS) and an intermittent fixation method to preserve the growth function of epiphysis in an 11-year-old patient with an osteosarcoma of the distal femur.The 11-year-old m...

We report a case of neonatal separation of the distal humeral epiphysis in which non-invasive ultrasonic examination provided clear definition of the injury.

BACKGROUND Most surgeons advocate in situ fixation of the slipped epiphysis with acceptance of any persistent deformity in the proximal femur [Aronsson DD, Loder RT, Breur GJ, Weinstein SL (2006) Slipped capital femoral epiphysis: current concepts. J Am Acad Orthop Surg 14, 666-679]. This residual deformity can lead to osteoarthritis due to femoroacetabular cam impingement (FAI) [Leunig M, Slon...

Epiphyseal tumours in young patients are a diagnostic challenge, largely due to their rarity. The differential diagnosis for a lytic lesion with well-defined margins at the epiphysis of a long bone in a young patient should fundamentally include three lesions typically found at the epiphysis: chondroblastoma, giant-cell tumour of bone and clear cell chondrosarcoma. Other conditions to consider ...