Healthubs  
   Reviewed links to overviews, clinical trials, diagnosis, treatment and MRI images for avascular necrosis.
   http://www.healthubs.com/necrosis

Dr Yoon's Osteonecrosis Clinic  
   Describes information about osteonecrosis (avascular necrosis aseptic necrosis AVN ON) of femoral head which is a disabling disease developed in the hip joint.
   http://www.osteonecrosis.net/

Osteonecrosis Listserver  
   Internet forum for osteonecrosis (also called avascular necrosis) offering information and support.
   http://groups.yahoo.com/group/osteonecrosis/

Avascular Necrosis  
   Offers a personal story since contracting this disease. Including information and a diary.
   http://home.pacific.net.au/~rossjones

Legg Perthes Support Group International  
   Part of the National Osteonecrosis Foundation, offering encouragement, medical information, online discussions and a message board.
   http://maxpages.com/lpsupportgroup

Kienbock's Disease - Australia  
   A support and information group in Australia interacting by message or chat room for people with avascular necrosis of the lunate.
   http://groups.yahoo.com/group/KienbockDisease_Australia