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Patellar dislocation occurs mainly in youths (under age 20) engaged in sports that may involve accidental rotation of the knee while in flexion, a movement clinically called valgus, which is the cause of some 93% of patellar dislocation cases. [3]
A knee dislocation is an injury in which there is disruption of the knee joint between the tibia and the femur. [3] [4] Symptoms include pain and instability of the knee. [2] Complications may include injury to an artery, most commonly the popliteal artery behind the knee, or compartment syndrome. [3] [4] [7]
The patella (pl.: patellae or patellas), also known as the kneecap, is a flat, rounded triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. The patella is found in many tetrapods, such as mice, cats, birds and dogs, but not in whales, or most reptiles.
Each joint in the body can be dislocated, however, there are common sites where most dislocations occur. The most common dislocated parts of the body are discussed as follows: Dislocated shoulder. Anterior shoulder dislocation is the most common type of shoulder dislocation, accounting for at least 90% of shoulder dislocations.
Science & Tech. Shopping. Sports
Also known as a broken kneecap, a patella fracture usually follows a history of trauma and commonly presents with swelling, pain, bruising and inability to both bend and straighten the knee. [5] The pain is worse when trying to stand and the person may be unable to walk. The pain can also be aggravated by prolonged periods of sitting.
Australian swimmer Mollie O’Callaghan picked up a knee injury about five weeks ago, described as anything from a dislocation to a simple tweak. The 19-year-old O’Callaghan broke the world ...
When dislocated, the soft tissue layer that the patella rests in is damaged; the patella is forced out of its groove and back into place. The knee dislocates towards the outside of the leg, leaving the MPFL torn. If the injury to the ligament is left untreated, it may be able to heal on its own, but likely in a loosened or lengthened position ...