John Hunter's MSK Teaching File
Interesting MRI Cases from University of Washington Department of Radiology

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Case 58b Discussion

Intact ACL graft with anterior arthrofibrosis (the "cyclops lesion") in the intercondylar notch. The usual symptoms are pain and inability to fully extend the knee. See also Case 7b. (45.485, 45.450)

Case 58b: Surgical Procedure