Which nerve innervates dorsal interossei (4 DAB)?

Which nerve innervates dorsal interossei (4 DAB)?

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

Answer: (B)

Dorsal interossei in the foot are four intrinsic muscles that abduct the toes and are innervated by the lateral plantar nerve, a branch of the tibial nerve. The lateral plantar nerve supplies most intrinsic foot muscles, including the interossei, whereas the medial plantar nerve handles the more medial muscles like abductor hallucis and flexor digitorum brevis. The deep fibular nerve targets the anterior compartment and extensor digitorum brevis, not these interossei. While the tibial nerve gives rise to the plantar nerves, the direct motor supply for the dorsal interossei is specifically via the lateral plantar nerve.

Dorsal interossei in the foot are four intrinsic muscles that abduct the toes and are innervated by the lateral plantar nerve, a branch of the tibial nerve. The lateral plantar nerve supplies most intrinsic foot muscles, including the interossei, whereas the medial plantar nerve handles the more medial muscles like abductor hallucis and flexor digitorum brevis. The deep fibular nerve targets the anterior compartment and extensor digitorum brevis, not these interossei. While the tibial nerve gives rise to the plantar nerves, the direct motor supply for the dorsal interossei is specifically via the lateral plantar nerve.