M Articularis Genus

Hi all I’ve had a new patient, male 42yrs with an anterior superior medial knee pain and and a patella that clicks or snaps in to position during the last 1/3rd of knee extension – a bit like a trigger thumb or hallux where there’s a cyst on the tendon and the interdigital joint clicks back into place on extension. However this causes no pain in the knee (and is definitely not a meniscus tear (negative Mc Murray test) before you ask;)) So i’m suspecting a swelling or perturbation in the Patella cartilage that is flicking over the lateral femoral condyle edge as it drops into the patella groove (intercondylar fossa) after deviated tracking from the flexed knee position. There is no crunchiness under the knee cap normally associated with chondromalacia patella tho

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M Articularis Genus

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