Since in humans the knee supports nearly the whole weight of the body it is the joint most vulnerable to both acute injury and the development of osteoarthritis.. Knee definition at dictionary.com a free online dictionary with pronunciation synonyms and translation. look it up now! If your knee swells right away something is bleeding inside.. sharp pain along the inner knee with twisting or squatting is most usually a meniscus tear.. Information about knee in the free online english dictionary and encyclopedia.. 3. something resembling the human knee such as a bent piece of pipe.. Knee n. the joint between the thigh and the lower leg formed by the articulation of the femur and the tibia and covered anteriorly by the patella Knee pain ? comprehensive overview covers symptoms causes treatment of this common joint condition. The knee a hinge joint has one of the widest ranges of motion of any joint. a knee damaged by arthritis may be a candidate for joint replacement.. Read about knee pain causes (osteoarthritis arthritis) symptoms (swelling stiffness) and treatment (exercises). learn about knee anatomy and knee injuries. Information about meniscus injuries and other knee problems. Osteonecrosis of the knee. arthritis. arthritis of the knee. frequently asked questions. knee surgery. cemented and cementless knee replacement. knee implants.