In sports and orthopedics, people will sometimes speak of "torn cartilage" and actually be referring to an injury to one of the menisci. Menisci can be torn during innocuous activities such as walking or squatting. They can also be torn due to traumatic forces encountered in sports. The trauma mechanism is most often a twisting movement while the knee is bent. In older adults, the<unk>  can be damaged following prolonged 'wear and<unk> '; this is called a degenerative<unk> .<unk> s can lead to pain and/or swelling of the knee joint. Especially acute injuries (typically in younger, more active patients) can lead to displaced<unk> s which can cause mechanical symptoms such as clicking, catching, or locking during motion of the knee joint. The joint will be in pain when in use, but when there is no load, the pain goes away.
A<unk>  of the medial<unk>  can occur as part of the unhappy triad, together with a<unk>  of the anterior cruciate ligament and medial collateral ligament.
Tear of meniscus
Retrocalcaneal bursitis
Chondromalacia patellae
Prepatellar bursitis
Olecranon bursitis
Dislocated patella
Knee dislocation
Calcific tendinitis