Table 1.

Answer requirements characterizing defined groups

	Use of an acc. medial portal	Visualization of the femoral ACL insertion site	Visualization of the tibial ACL insertion site	Lateral intercondylar ridge identified	Bifurcate ridge identified	Placing the femoral tunnel(s) in the femoral ACL insertion site	Placing the tibial tunnel(s) in the tibial ACL insertion site	Transportal drilling of the femoral ACL tunnel(s)
Group
TP-reference	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
TP-anatomic						Yes	Yes	Yes
TT-anatomic						Yes	Yes	No
TT-partial anatomic						No	Yes	No
TT-non-anatomic						No	No	No
All landmarks		Yes	Yes	Yes	Yes
No landmarks		No	No	No	No
TP drilling								Yes
TT-drilling								No

Empty spaces are not assigned a mandatory answer requirement. Surgeons can thus answer “Yes” or “No” to these items

Acc accessory, TP transportal, TT transtibial