Decreased synovial fluid proteoglycan-4 concentration in ACL-transected knee joints is due to a dynamic imbalance in biosynthesis, clearance, and effusion. (April 2018) - Raleigh, A.R.; Cravotta, M.J.; Garcia, J.J.; Schumacher, B.L.; Kato, K.; Firestein, G.S.; Masuda, K.; Sah, R.L.