Common palmar digital nerves of ulnar nerve

Common Palmar Digital Nerves of Ulnar Nerve

The Common Palmar Digital Nerves of Ulnar Nerve are a group of nerves in the human hand. They are branches of the Ulnar Nerve that provide sensory innervation to the palmar aspect of the little finger and the medial half of the ring finger, as well as the associated palmar and dorsal skin.

Anatomy[edit | edit source]

The common palmar digital nerves of the ulnar nerve originate from the Ulnar Nerve in the palm of the hand. They divide into two proper digital nerves: one for the medial side of the little finger and the other for the adjacent sides of the little and ring fingers.

Diagram of the course and branches of the ulnar nerve

Function[edit | edit source]

These nerves carry sensory information from the palmar aspect of the fifth digit and the medial half of the fourth digit, as well as the corresponding areas of palmar and dorsal skin. They also provide motor innervation to the intrinsic muscles of the hand, contributing to the fine motor control of these digits.

Clinical Significance[edit | edit source]

Damage to the common palmar digital nerves of the ulnar nerve can result in decreased sensation or numbness in the areas of the hand they innervate. This can be caused by trauma, compression, or diseases such as Carpal Tunnel Syndrome or Ulnar Nerve Entrapment.