The necrosis rate of femoral neck subcapitellar cuttings is higher, mainly related to the location of the fracture, because the subcapitellar type has poor local blood circulation.
The fracture should be operated as soon as possible after the occurrence of the fracture, the earlier the operation, the lower the chance of necrosis, usually within 6~12 hours of operation, if more than 24~48 hours of operation, the chance of necrosis of the femoral head is 40%.
Subcapital femoral head embedded fracture, is a fracture cuttings together, often with inversion or exversion deformity, itself the femoral neck subcapital fracture due to local blood circulation is relatively poor or local vascular contusion will affect the healing of the fracture, so the incidence of femoral head necrosis is high.
The rate of necrosis of femoral head inferior cutaneous type is very high, it is suggested that patients should have the operation of internal fixation by incision and reduction or artificial femoral head replacement as soon as possible, and the early treatment will help the recovery.