Kinesiology 2236A/B Lecture 17: 2236 Lecture 17 March 15
21 Mar 2016
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Typically occurs more quickly than synovial effusion. Noticeable swelling < 4 hours post injury. Number, meniscal tears, capsular tears may be the cause. In pediatrics, suspect patellar dislocation with the outside of the meniscus. A knee radiograph is indicated after trauma when at least one of the following is present: Age greater than 55 (low bone density) or less than 18 (growth plates) Younger patient who may avulse (ligament pulls a chunk of bone off with it) a bony fragment. Clinical suspicion of loose bodies gives locking. Patellar dislocation occurs when the patella moves out of its groove laterally onto/over the femoral condyle. Forceful knee rotation (tibia er/femur ir) +/- forceful quads contraction. Knee usually near full extension (out of trochlea) May report feelings of knee shift, move or pop out. Tenderness over medial border of patella - sore where it is getting torn. Positive lateral apprehension test will get tight or knock your hand away.
