Thumb Tendon Anatomy

Finger movement is controlled by muscles in the forearms that pull on finger tendons. The name for when these 2 tendons get inflamed is de quervains syndrome.

Racgp Hands Fingers Thumbs Assessment And Management

Fingers have a complex anatomy.

Thumb tendon anatomy. It connects the muscle in the back of the forearm to the bone in the middle of the thumb. The carpal bones are arranged in 2 interrelated rows. Tendons connect muscles to bones.

The flexor digitorum profundus tendon is located under and splits the flexor digitorum superficialis tendon. Tendons are covered by a slippery thin soft tissue layer called synovium. It attaches to the metacarpal bone of the thumb and helps pull the thumb away from the rest of the hand.

This layer allows the tendons to slide easily through a fibrous tunnel called a sheath. One row connects with the ends of the bones in the forearm radius and ulna. It attaches to the base of the distal phalanx and flexes the dip.

The flexor pollicis longus tendon bends the thumb. When if the tendon squeezes through the tendon sheath it does so with a snapping sensation or sound that brings to mind the release of a trigger. Basic anatomy of the finger.

Each finger has 3 phalanges bones and 3 hinged joints. This tendon along with the extensor policies brevis tendon can get inflamed and painful. The wrist is a complex mechanical system of 8 small bones known as the carpal bones.

Ligaments connect finger bones and help keep them in place. 4 figure 1 illustrates the basic anatomy of the finger including joints ligaments and tendons. The wrist links the hand to the arm.

Bones muscles tendons nerves. Irritation of the protective sheath that surrounds the tendon of the affected thumb can cause the finger to get stuck in the bent position as one moves the thumb or fingers. This tendon also travels along the back of the thumb and helps straighten the thumb but it connects the muscle in the back of the forearm to the bone at the tip of the thumb.

Any swelling of the tendons andor thickening of the sheath results in increased friction and pain with certain thumb and wrist movements. Anatomy of the hand and wrist. The thumb has two of each.

Forearm Pain Relief Cause And Treatment Deep Recovery