Markers of cartilage and synovial metabolism in joint fluid and serum of patients with chondromalacia of the patella. - Väätäinen,U.; Lohmander,L.S.; Thonar,E.; Hongisto,T.; Agren,U.; Rönkkö,S.; Jaroma,H.; Kosma,V.M.; Tammi,M.; Kiviranta,I. (Osteoarthritis Cartilage, 1998)