Which two muscles contribute to medial pull of the patella?

Which two muscles contribute to medial pull of the patella?

• A. Gracilis and semitendinosus
• B. Gracilis and sartorius
• C. Sartorius and tensor fasciae latae
• D. Gracilis and biceps femoris

Answer: (B)

Medial pull of the patella comes from muscles that cross the knee on its inner side and pull toward that side when they contract. Gracilis and sartorius form part of the pes anserinus on the medial tibia, so their tendons cross the medial aspect of the knee. When they activate, they contribute a medial vector to the patellofemoral mechanism, helping guide the patella toward the inner knee during flexion. The other options involve muscles that either pull laterally or don’t provide this medial influence, so they don’t produce the same medial pull on the patella.

Medial pull of the patella comes from muscles that cross the knee on its inner side and pull toward that side when they contract. Gracilis and sartorius form part of the pes anserinus on the medial tibia, so their tendons cross the medial aspect of the knee. When they activate, they contribute a medial vector to the patellofemoral mechanism, helping guide the patella toward the inner knee during flexion. The other options involve muscles that either pull laterally or don’t provide this medial influence, so they don’t produce the same medial pull on the patella.