Plantar surfaces of digits of foot

The plantar surfaces of digits of foot refer to the undersides of the toes, with the toes facing the ground.

On the plantar surfaces of digits of foot, there are fibrous flexor sheaths that connect to the edges of the phalanges and the plantar ligaments associated with the metatarsophalangeal and interphalangeal joints. These sheaths create tunnel-like spaces.

The tendons of the flexor digitorum longus, flexor hallucis longus, and flexor digitorum brevis muscles pass through these fibrous tunnels on the plantar surfaces of digits of foot. The fibrous flexor sheaths play an crucial role in keeping the tendons in place against the phalanges, preventing them from bowstringing during flexion movements.

In a more superficial layer, the digital extensions of the plantar aponeurosis can be found beneath the toes. They attach to the bones, ligaments, and dermis.

The skin on the plantar surfaces of digits of foot is supplied with sensory nerves from the cutaneous branches of the medial and lateral plantar nerves.