Which nerve innervates flexor digiti minimi brevis?

Which nerve innervates flexor digiti minimi brevis?

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

Answer: (D)

Flexor digiti minimi brevis is a small intrinsic muscle of the sole that flexes the little toe at the metatarsophalangeal joint. Its motor supply comes from the lateral plantar nerve, a branch of the tibial nerve that innervates most intrinsic plantar muscles on the lateral side, including interossei, the lateral three lumbricals, and the flexor digiti minimi brevis itself. In contrast, the medial plantar nerve covers the main medial group in the sole (such as abductor hallucis, flexor digitorum brevis, flexor hallucis brevis, and the first lumbrical). The deep fibular nerve supplies muscles on the dorsum of the foot, and while the tibial nerve gives rise to the plantar nerves, the direct innervation of this muscle is by the lateral plantar nerve.

Flexor digiti minimi brevis is a small intrinsic muscle of the sole that flexes the little toe at the metatarsophalangeal joint. Its motor supply comes from the lateral plantar nerve, a branch of the tibial nerve that innervates most intrinsic plantar muscles on the lateral side, including interossei, the lateral three lumbricals, and the flexor digiti minimi brevis itself. In contrast, the medial plantar nerve covers the main medial group in the sole (such as abductor hallucis, flexor digitorum brevis, flexor hallucis brevis, and the first lumbrical). The deep fibular nerve supplies muscles on the dorsum of the foot, and while the tibial nerve gives rise to the plantar nerves, the direct innervation of this muscle is by the lateral plantar nerve.