![]() People often describe pain as severe and being "inside the knee cap". Recurrence after an initial dislocation occurs in about 30% of people. It is most common in those 10 to 17 years old. Patellar dislocations occur in about 6 per 100,000 people per year. Surgery may be indicated in those cases where a fracture occurs within the joint or where the patella has repeatedly dislocated. Surgery after a first dislocation is generally of unclear benefit. This is then followed by physical therapy. After reduction, the leg is generally splinted in a straight position for a few weeks. ![]() Reduction is generally done by pushing the patella towards the midline while straightening the knee. Diagnosis is typically based on symptoms and supported by X-rays. Dislocations nearly always occur away from the midline. Commonly associated sports include soccer, gymnastics, and ice hockey. Occasionally, it occurs when the knee is bent and the patella is struck directly. Ī patellar dislocation typically occurs when the knee is straight and the lower leg is bent outwards when twisting. Complications may include a patella fracture or arthritis. The patella is also often felt and seen out of place. Often the knee is partly bent, painful and swollen. ![]() Reduction, splinting, physical therapy, surgery Ī patellar dislocation is a knee injury in which the patella (kneecap) slips out of its normal position. High riding patella, family history, loose ligaments Knee is partly bent, painful and swollen īending the lower leg outwards when the knee is straight, direct blow to the patella when the knee is bent X-ray showing a patellar dislocation, with the patella out to the side.
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