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Viewing of the ACL femoral insertion site through the central portal. Right knee arthroscopy, viewing from the central portal with knee in 90° of flexion. A hook probe is inserted from the anteromedial portal to probe the ACL stump. The visualization of the femoral footprint (yellow arrows) and proximal avulsion injury is much better with this viewing. (ACL, anterior cruciate ligament; LFC, lateral femoral condyle; LTC, lateral tibial condyle; MFC, medial femoral condyle.)
