Which nerve provides innervation to the adductor magnus (hamstring part)?

Which nerve provides innervation to the adductor magnus (hamstring part)?

• A. Common fibular nerve
• B. Femoral nerve
• C. Obturator nerve
• D. Tibial nerve

Answer: (D)

The hamstring part of the adductor magnus is innervated by the tibial division of the sciatic nerve. This fits with its origin from the ischial tuberosity and its hamstring-like function of hip extension, which aligns with the typical innervation of the posterior thigh muscles—the tibial nerve. The obturator nerve supplies the adductor part of the muscle, while the common fibular nerve covers the short head of the biceps femoris, the femoral nerve supplies the anterior thigh muscles, and thus does not innervate the hamstring portion.

The hamstring part of the adductor magnus is innervated by the tibial division of the sciatic nerve. This fits with its origin from the ischial tuberosity and its hamstring-like function of hip extension, which aligns with the typical innervation of the posterior thigh muscles—the tibial nerve. The obturator nerve supplies the adductor part of the muscle, while the common fibular nerve covers the short head of the biceps femoris, the femoral nerve supplies the anterior thigh muscles, and thus does not innervate the hamstring portion.