Dorsal interossei are innervated by which nerve?

Dorsal interossei are innervated by which nerve?

• A. Medial Plantar Nerve
• B. Lateral Plantar Nerve
• C. Deep Fibular Nerve
• D. Tibial Nerve

Answer: (B)

Dorsal interossei are intrinsic foot muscles that abduct the toes, and their motor supply comes from the lateral plantar nerve, a branch of the tibial nerve. This distinguishes them from the medial plantar nerve, which handles the medial group of foot muscles (like abductor hallucis and the first lumbrical). The deep fibular nerve supplies muscles on the dorsum of the foot (such as extensor digitorum brevis), not the interossei. The tibial nerve gives rise to the medial and lateral plantar nerves, but the interossei specifically receive fibers from the lateral plantar nerve.

Dorsal interossei are intrinsic foot muscles that abduct the toes, and their motor supply comes from the lateral plantar nerve, a branch of the tibial nerve. This distinguishes them from the medial plantar nerve, which handles the medial group of foot muscles (like abductor hallucis and the first lumbrical). The deep fibular nerve supplies muscles on the dorsum of the foot (such as extensor digitorum brevis), not the interossei. The tibial nerve gives rise to the medial and lateral plantar nerves, but the interossei specifically receive fibers from the lateral plantar nerve.