The ACL originates from the anterior intercondylar region of the tibia and inserts on which structure?

The ACL originates from the anterior intercondylar region of the tibia and inserts on which structure?

• A. medial border of the lateral femoral condyle
• B. medial border of the lateral femoral condyle
• C. medial border of the medial femoral condyle
• D. medial border of the medial tibial condyle

Answer: (B)

The ACL attaches to the inner surface of the lateral femoral condyle, specifically the medial border within the intercondylar notch. The ligament runs from the anterior intercondylar area of the tibia up to this femoral site, so its insertion on the medial side of the lateral femoral condyle positions it to resist anterior translation and rotation of the tibia relative to the femur. That makes the medial border of the lateral femoral condyle the correct description. Attaching to the medial femoral condyle or to a tibial border would misstate both the bony partner and the exact location of the insertion.

The ACL attaches to the inner surface of the lateral femoral condyle, specifically the medial border within the intercondylar notch. The ligament runs from the anterior intercondylar area of the tibia up to this femoral site, so its insertion on the medial side of the lateral femoral condyle positions it to resist anterior translation and rotation of the tibia relative to the femur. That makes the medial border of the lateral femoral condyle the correct description. Attaching to the medial femoral condyle or to a tibial border would misstate both the bony partner and the exact location of the insertion.