Sartorius is innervated by which nerve?

Sartorius is innervated by which nerve?

• A. Obturator Nerve
• B. Tibial Nerve
• C. Femoral Nerve
• D. Lateral Femoral Cutaneous Nerve

Answer: (C)

Sartorius sits in the anterior compartment of the thigh, and its motor supply comes from the femoral nerve. The femoral nerve carries L2–L4 fibers to the muscles of this compartment, including the sartorius and the quadriceps, and it also provides sensation to the anterior thigh (via cutaneous branches) and to the medial leg (via the saphenous branch). The other nerves don’t match this pattern: the obturator nerve mostly innervates the medial thigh adductors; the tibial nerve serves the posterior leg and part of the hamstrings; the lateral femoral cutaneous nerve is sensory to the lateral thigh. Hence, the femoral nerve is the correct innervation for sartorius.

Sartorius sits in the anterior compartment of the thigh, and its motor supply comes from the femoral nerve. The femoral nerve carries L2–L4 fibers to the muscles of this compartment, including the sartorius and the quadriceps, and it also provides sensation to the anterior thigh (via cutaneous branches) and to the medial leg (via the saphenous branch). The other nerves don’t match this pattern: the obturator nerve mostly innervates the medial thigh adductors; the tibial nerve serves the posterior leg and part of the hamstrings; the lateral femoral cutaneous nerve is sensory to the lateral thigh. Hence, the femoral nerve is the correct innervation for sartorius.