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
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://altair.chonnam.ac.kr/~tryoon/i-index.htm
