Migration of ACL graft fixation screws
Knee pain and locking.
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The femoral fixation screw has migrated out of its osseous tunnel and lies posterior to the femur.
The tibial fixation screw has migrated medially and posteriorly out its osseous tunnel but remains intraosseous.
Background changes of osteoarthritis, predominantly affecting the medial tibiofemoral compartment.
Migration or failure of fixation materials is a common complication of ACL repair.