Question

multiple choice 1 point
what knee structure is primarily responsible for preventing posterior sliding of the femur relative to the tibia?
○ anterior cruciate ligament
○ menisci
○ posterior cruciate ligament
○ medial collateral ligament

Explanation:

• The anterior cruciate ligament (ACL) prevents anterior sliding of the tibia relative to the femur.
• The menisci act as shock - absorbers and improve joint congruence but are not primarily for preventing posterior sliding.
• The medial collateral ligament (MCL) resists valgus forces at the knee.
• The posterior cruciate ligament (PCL) is the main structure that prevents posterior sliding of the femur relative to the tibia (or anterior sliding of the tibia relative to the femur).

Answer:

C. posterior cruciate ligament