what is the muscle between your thumb and pointer finger

Overuse of the wrist from heavy gripping, twisting, and repeated wrist and hand motions can cause symptoms.

Guyon's canal syndrome has several causes. Related Document: South Mountain Physical Therapy's Guide to Hand Anatomy Known as the hook of hamate, this small bone can break off and press against the ulnar nerve within Guyon's canal. This bone has a small hook-shaped spur that sticks out to provide an attachment for several wrist ligaments. The hamate bone forms one side of Guyon's canal. Branches of this nerve also supply the small muscles in the palm and the muscle that pulls the thumb toward the palm. After passing through the canal, the ulnar nerve branches out to supply feeling to the little finger and half the ring finger.

This tunnel is formed by two bones (the pisiform and hamate) and the ligament that connects them. As it crosses the wrist, the ulnar nerve and ulnar artery run through the tunnel known as Guyon's canal. Nerve RootsĪfter leaving the side of the neck, the ulnar nerve travels through the armpit and down the arm to the hand and fingers. The nerve roots then join together to form three main nerves that travel down the arm to the hand, one of which is the ulnar nerve. The ulnar nerve actually starts at the side of the neck, where the individual nerve roots exit the spine through small openings between the vertebrae. Where is the ulnar nerve, and what does it do?

What is the muscle between your thumb and pointer finger