<unk>  is a Salter-Harris type 1 fracture through the proximal<unk>  physis. Stress around the hip causes a shear force to be applied at the growth plate. While trauma has a role in the manifestation of the fracture, an intrinsic weakness in the physeal cartilage also is present. The almost exclusive incidence of<unk>  during the adolescent growth spurt indicates a hormonal role. Obesity is another key predisposing factor in the development of<unk> . The fracture occurs at the hypertrophic zone of the physeal cartilage. Stress on the hip causes the<unk>  to move posteriorly and medially. By convention, position and alignment in<unk>  is described by referring to the relationship of the proximal fragment<unk><unk><unk>  to the normal distal fragment<unk>  neck). Because the physis has yet to close, the blood supply to the<unk>  still should be derived from the<unk>  neck; however, this late in childhood, the supply is tenuous and frequently lost after the fracture occurs. Manipulation of the fracture frequently results in osteonecrosis and the acute loss of articular cartilage (chondrolysis) because of the tenuous nature of the blood supply.
Slipped capital femoral epiphysis
Attenuated patella alta
Osteitis pubis
Retrocalcaneal bursitis
Luxating patella
Radial dysplasia
Multiple epiphyseal dysplasia
Calcaneal fracture