Clinical Study

MR Imaging of Intra- and Periarticular Cyst-Like Lesions of the Knee Joint in Workers with Occupational Kneeling

Figure 4

Cluster of communicating extra capsular synovial cysts at the dorsal aspect of the femoral metaphysis. (a) Coronal fat-saturated T2 and (b) axial proton density fat-saturated MR images of the right knee without effusion in a 51-year-old male floor layer. The lesion takes it origin from the intracapsular synovial recess at the dorsal cranial aspect of the lateral femoral condyle through a defect in the capsule (arrow head). The majority of these lesions detected in floor layers originated similarly but from the medial femoral condyle. FH, fibular head; MF, medial femoral condyle; FM, femoral metaphysis; P, patella; arrow, popliteal artery.
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(a)
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(b)