What are the symptoms of AVN?
Transplant-related AVN occurs most frequently in the hips, but can occur in other joints as well. In the early stages, AVN might not cause any symptoms. As the disease progresses, however, pain in the joint may develop gradually, occurring first only when putting weight on the joint, and then progressing to constant pain. If untreated, the pain may eventually become disabling. For more information, go to: http://www.niams.nih.gov/hi/topics/avascular_necrosis/ http://arthritis.about.com/od/avn/ss/avn_3.html http://www.merck.com/mmhe/sec05/ch064/ch064a.