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A luxating patella, sometimes called a trick knee, is a condition in which the patella, or kneecap, dislocates or moves out of its normal location. It can be associated with damage to the anterior cruciate ligament. [1] Patellar luxation is a common condition in dogs, particularly small and miniature breeds. [2]
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 partial dislocation is referred to as a subluxation. Dislocations are often caused by sudden trauma to the joint like an impact or fall. A joint dislocation can cause damage to the surrounding ligaments, tendons, muscles, and nerves. [2] Dislocations can occur in any major joint (shoulder, knees, etc.) or minor joint (toes, fingers, etc.).
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 Schenck classification is a system of categorizing knee dislocations based on the pattern of multiligamentous injury. It is limited clinically by not describing the risk of neurovascular involvement.
Houston Texans wide receiver Tank Dell is out for the rest of the season after suffering a dislocated knee, torn ACL and other damage, according to Texans head coach DeMeco Ryans.
The Texans already lost Stefon Diggs to a season-ending knee injury. Dell had 569 yards and two touchdowns this season. He was having a big day Saturday against the Kansas City Chiefs with 98 ...
Patellar subluxation syndrome is an injury involving the kneecap.Patellar subluxation is more common than patellar dislocation and is just as disabling. [1]In this condition, the patella repetitively subluxates and places strain on the medial restraints and excessive stress/tension on the patellofemoral joint.