Quadriceps contraction and intra-articular pressure.
D001172:Arthritis, Rheumatoid / Q000503:physiopathology; D005122:Exudates and Transudates; D006801:Humans; D007717:Knee / Q000502:physiology*; D009119:Muscle Contraction; D011312:Pressure; D012421:Rupture; D013581:Synovial Cyst; D013583:Synovial Membrane