Which nerve provides motor innervation to the adductor group of muscles in the thigh?

Which nerve provides motor innervation to the adductor group of muscles in the thigh?

• A. Obturator nerve
• B. Femoral nerve
• C. Sciatic nerve
• D. Lateral femoral cutaneous nerve

Answer: (A)

Motor innervation to the thigh adductor group comes from the obturator nerve, which arises from L2–L4 and travels through the obturator canal into the thigh. It supplies the adductor longus, adductor brevis, gracilis, and the adductor part of the adductor magnus. The tibial portion of the sciatic nerve provides the hamstring part of adductor magnus, illustrating dual innervation for that muscle. The femoral nerve mainly supplies the quadriceps and some anterior thigh muscles, while the lateral femoral cutaneous nerve is purely sensory to the lateral thigh. So, the obturator nerve is the one that provides motor innervation to the adductor group.

Motor innervation to the thigh adductor group comes from the obturator nerve, which arises from L2–L4 and travels through the obturator canal into the thigh. It supplies the adductor longus, adductor brevis, gracilis, and the adductor part of the adductor magnus. The tibial portion of the sciatic nerve provides the hamstring part of adductor magnus, illustrating dual innervation for that muscle. The femoral nerve mainly supplies the quadriceps and some anterior thigh muscles, while the lateral femoral cutaneous nerve is purely sensory to the lateral thigh. So, the obturator nerve is the one that provides motor innervation to the adductor group.