Traumatic femoral head necrosis

Traumatic femoral head necrosis refers to femoral head necrosis caused by external force impact caused by femoral neck fracture, hip dislocation, hip contusion and contusion. With the rapid development of transportation and industry, the incidence of femoral neck fractures has increased significantly. Statistics show that the average necrosis rate of femoral head fractures is 25% -30%. The occurrence of necrosis is closely related to many factors. Traumatic femoral head necrosis usually occurs 1 to 5 years after the fracture, and can occur as early as 2 to 3 months after the injury. The incidence is generally 75% to 95%. Therefore, most cases of bone necrosis occur after fracture surgery. In particular, the risk of femoral head necrosis is as high as 90% with hip dislocation and fracture. Especially if the hip dislocation with fracture is more than 24 hours, the probability of femoral head necrosis is 100%.