If a torn anterior cruciate ligament (acl) is not properly repaired, the consequences could include the inability to prevent if a torn anterior cruciate ligament (acl) is not properly repaired, the consequences could include the inability to prevent medial rotation of an extended knee lateral rotation of an extended knee forward sliding of the tibia on the femur forward sliding of the femur

The choices for this question are:

(1) Medial rotation of an extended knee
(2) Lateral rotation of an extended knee
(3) Forward sliding of the tibia on the femur
(4) Forward sliding of the femur

The correct answer is "forward sliding of the tibia on the femur". This is in all due respect to the anatomy of the anterior cruciate ligament wherein it is attached to (1) the anterior intercondylar notch of the femur and (2) anterior intercondylar eminence of the tibia. If this ligament if torn, the tibia will be pushed more anteriorly than normal in relation to the femur, leading to pain and difficulty ambulating.

1-taiga 2-desert 3-desert 4-taiga