How is femoral necrosis caused? Does it count as a fall?

The cause of femoral head necrosis due to trauma is damage to the blood vessels supplying the femoral head, such as damage to the lateral epiphyseal vessels. After these blood vessels are damaged, all or part of the femoral head loses blood supply, and avascular necrosis can be caused 8 hours after the injury. CONCLUSIONS: In displaced femoral neck fractures, osteonecrosis occurs very early. Avascular necrosis of the femoral head accounts for 85% of displaced femoral neck fractures and 15% to 25% of nondisplaced fractures. There have also been reports of avascular necrosis of the femoral head after needle insertion in intertrochanteric fractures, which is due to the needle in the femoral head, because the lateral epiphyseal vessels may be injured during needle insertion (the needle is inserted above the side of the femoral head). or posteriorly into the femoral head). Injury to this vessel can result in avascular necrosis of the femoral head, with eventual collapse of the upper weight-bearing part of the femoral head. In addition, sometimes a direct blow to the hip can cause avascular necrosis of the femoral head, and acute hip dislocation can also cause avascular necrosis of the femoral head. I suggest that you still go to a professional hospital for consultation and treatment, which will be beneficial to your recovery, and I hope it will help you!

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