Patient's question:
My cousin has been saying he wasn't feeling well recently. He mentioned that his leg bones were very painful, and he couldn't bend down either. He couldn't even squat down. After a thorough examination, the doctor said it was avascular necrosis of the femoral head. I'd like to ask, what could have caused this avascular necrosis of the femoral head?Doctor's answer:
Regarding the causes of avascular necrosis of the femoral head, there are currently three recognized reasons in medicine. The first is that patients with rheumatic immune diseases are prone to developing avascular necrosis of the femoral head after long-term and excessive use of corticosteroids. The second is long-term drug abuse, which is more common in men and can lead to avascular necrosis of the femoral head. The third is that patients with a history of femoral neck fracture are more likely to experience avascular necrosis of the femoral head again. In addition to congenital hip dysplasia or () due to postnatal causes, these conditions can also lead to avascular necrosis of the femoral head.