Incomplete Restoration of Immobilization Induced Softening of Young Beagle Knee Articular Cartilage After 50-Week Remobilization - Haapala, J; Arokoski, J; Pirttimäki, J; Lyyra, T; Jurvelin, J; Tammi, M; Helminen, H J; Kiviranta, I (International Journal of Sports Medicine, 2000)