Avascular necrosis of femoral head
Capital femoral epiphysis fails to grow because of lack of blood supply
Affects children 4-9yr old
Male:female 4:1
Bilateral in 10%
Capital femoral epiphysis fails to grow because of lack of blood supply
Legg-Calve-Perthes disease
Acute rheumatic fever
Osgood-Schlatter disease
Developmental dysplasia of hip
Patellofemoral syndrome
Femur fracture
Juvenile idiopathic arthritis
Boxer's fracture