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A patellar dislocation is a knee injury in which the patella (kneecap) slips out of its normal position. [5] Often the knee is partly bent, painful and swollen. [1] [2] The patella is also often felt and seen out of place. [1] Complications may include a patella fracture or arthritis. [3]
The patella rests in the trochlear, which is found in the distal part of the femur. The patella can dislocate from the groove because of trauma or an unnatural twisting of the knee. [5] 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 upper three-quarters of the patella articulates with the femur and is subdivided into a medial and a lateral facet by a vertical ledge which varies in shape. In the adult the articular surface is about 12 cm 2 (1.9 sq in) and covered by cartilage , which can reach a maximal thickness of 6 mm (0.24 in) in the centre at about 30 years of age.
Anteriorly, the infrapatellar fat pad is inserted below the patella and between the two membranes. It extends from the lower margin of the patella above, to the infrapatellar synovial fold below. With its free upper margin, this fold extends dorsally through the joint space to surround the two cruciate ligaments from the front, thus dividing ...
Patellofemoral (sometimes femoropatellar) refers to relations between the patella and the femur, such as: Knee, including the "Patellofemoral joint" Patellofemoral pain syndrome; Medial collateral ligament - the "Medial patellofemoral ligament"
Once reserved for athletes, eccentric exercise is becoming increasingly popular in everyday training and physical therapy—especially for people with musculoskeletal conditions like Parkinson’s ...
This finding was important as they were the first to note that it was a benign disorder that is separate from the more severe nail-patella syndrome. [35] Other common names for ischiopatellar syndrome are small patella syndrome (SPS), since the patellae are often small or absent in patients who have this syndrome, and coxo-podo-patellaire syndrome.
The San Francisco 49ers on Monday suspended linebacker De'Vondre Campbell for the final three games of the regular season for refusing to play Thursday night against the Los Angeles Rams.. Niners ...