Proper plantar digital nerves of lateral plantar nerve

The proper plantar digital nerves of the lateral plantar nerve are a group of nerves that provide sensory innervation to the lateral aspect of the foot. These nerves are terminal branches of the lateral plantar nerve, which itself is a branch of the tibial nerve.

Anatomy

The lateral plantar nerve divides into superficial and deep branches. The superficial branch further divides into the proper plantar digital nerves. These nerves are responsible for innervating the skin of the lateral three and a half toes, specifically the lateral side of the fourth toe and the entire fifth toe.

The proper plantar digital nerves of the lateral plantar nerve run alongside the plantar arteries and are accompanied by the plantar veins. They travel in the deep layers of the foot, beneath the plantar aponeurosis, and emerge to supply the skin and subcutaneous tissues.

Function

The primary function of these nerves is to provide sensory feedback from the lateral aspect of the foot. This includes sensations such as touch, pain, and temperature. They play a crucial role in the proprioception of the foot, helping to maintain balance and posture.

Clinical Significance

Injury or compression of the proper plantar digital nerves can lead to sensory deficits in the lateral toes. Conditions such as Morton's neuroma can affect these nerves, leading to pain and numbness. Proper diagnosis and management are essential to prevent long-term complications.

Also see

• Lateral plantar nerve
• Tibial nerve
• Plantar arteries
• Morton's neuroma