What are the symptoms of avascular necrosis (osteonecrosis)?
Any bone can be affected, but avascular necrosis most often affects the ends of the long bones, such as the upper leg bone at the hip.
Symptoms include mild to moderate hip or groin pain, decreased hip movement, and a limp. Pain may be sudden and become worse with standing or walking. Rest usually relieves the pain.
Children with avascular necrosis may have spasms in the hip muscle, have a limp, or refuse to bear weight. Legg-Calve-Perthes disease is a type of avascular necrosis in children that causes hip symptoms.