The Journal of Bone and Joint Surgery, Vol 58, Issue 8 1157-1160, Copyright © 1976 by Journal of Bone and Joint Surgery, Inc
Metabolic recovery of articular cartilage after intra-articular injections of glucocorticoid
F Behrens, N Shepard and N Mitchell
The recovery of adult rabbit articular cartilage after nine weekly
intra-articular injections of hydrocortisone acetate was investigated using
biochemical, autoradiographic, and tracer methods. After the cessation of
steroid injections, the rates of synthesis of proteoglycans and collagen
increased by up to 900 per cent. The increase occurred because of
accelerated metabolism of existing cells and an increase (caused by
mitosis) in the number of functioning chondrocytes. The proteoglycan
concentration only returned to normal values after six months.