Cyclops lesion

Case contributed by Andrew Lawson
Diagnosis certain


Knee pain after ACL reconstruction

Patient Data

Age: 20 years
Gender: Male

ACL reconstruction demonstrated with secondary ligamentization of the graft.

Prominent scarring anterior to the ACL graft projecting into the inferior aspect of Hoffa's fat pad. This measures 2.7 x 1.5 x 2.1 cm in size.

Also notice the swelling of patellar articular cartilage (chondromalacia patella) 

Case Discussion

Post operative scarring related to ACL repair which compatible with cyclops lesion (also known as localized anterior arthrofibrosis).

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