What causes osteonecrosis?

Osteonecrosis of this disease occurs, resulting in the performance of many reasons, can be divided into the following points: traumatic factors, non-traumatic factors, or due to other factors caused. Traumatic factors are mainly due to daily life, sports or by trauma, caused by femoral neck fracture; or is the occurrence of local sprain, fall, or even dislocation, then affect the local blood supply, resulting in the performance of osteonecrosis. Non-traumatic factors, mainly due to the patient's own diseases, need to use some hormone drugs for a long time caused by osteonecrosis; may also be due to daily life for a long time a large number of alcohol abuse, resulting in the performance of osteonecrosis; other factors, mainly due to congenital joint dysplasia, or due to decompression disease, may also be due to blood system diseases, resulting in the performance of osteonecrosis.