6Xavier LL, Karel P,Ute U .Transdermal fentanyl for thetreatment of pain caused by osteoarthritis of the knee orhip:an open,muiticentre study[J].BMC MusculoskeletalDisorders,2005,6(1):31-41.
10Freed L E ,Grande DA, Lingbin Z ,et al. Joint resurfacing using allograft chondrocytes and synthetic biodegradable polymer scaffolds. J Biomed Mater Res, 1994,28 (8) : 891-899.