Musculoskeletal ImagingPlica syndrome
a disorder in which the plicae of the knee become symptomatic owing to thickening, which in turn may be the result of traumatic synovitis. Injuries, strenuous exercise,
osteochondritis dissecans, meniscal
trauma, and intra-articular osteocartilaginous bodies may play a role in development of this syndrome (
Fig.1). Fibrous repair may be accompanied by increasing collagenization and progressive loss of elasticity. Irritation, abrasion and erosion of the bone may ensue. A clicking sensation, locking of the joint, or an audible or palpable snap may also be noted.
DR/RB
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Sagitttal T2-weighted MR image of the knee demonstrates thickening of the suprapatellar plica with entrapment of the fluid in the suprapatellar pouch creating a clinically palpable pseudotumour.
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Plica syndrome, Fig.1 | |