Fig. 6.

a Central anteromedial portal (CP) view of the femoral ACL insertion site of the right knee. The guide pin is in the accessory anteromedial portal. There should be at least 2 mm between the guide pin and the medial femoral condyle (bracket) to ensure safe femoral tunnel drilling without damaging the cartilage. b Under direct visualization through the accessory medial portal, the ruler is inserted through the high anterolateral portal (LP) to measure the femoral ACL insertion site size. CP central anteromedial portal view, AMP accessory medial portal view