Avascular necrosis is NOT seen in:

Avascular necrosis is common in fracture of femoral neck (including slipped capital femoral epiphysis, posterior dislocation of hip), fracture neck of talus, fracture waist of scaphoid and lunate (dislocation). Regions notorious for AVN: Head of femur, body of talus, proximal pa of scaphoid and lunate. In fracture neck femur the more proximal the lesion, more are chances of avascular necrosis. So subcapital fracture neck of femur has maximum chances of AVN (worst prognosis). Ref: Apley's Ohopedics 8/e, page 570 ; Maheshwari 3/e, page 40-41, 270