9Pelletier M J, Pelletier JP, Cloutior JM, et al. Neutral proteases capable of proteogly can digesting activity in osteoarthritic and normal human articualr cartilage[J]. Arthritis Rheum, 1984,27:305-310.
10Myers ER, Hardingham TE, Billingham MEJ, et al.Changes in the tensile strength and compressive properties of articularc artilages in a canine model of osteoarthritis[J]. Trans Orthop Res Soc, 1986,11 : 23-28.
