The extensor tendon compartments of the wrist are six tunnels which transmit the long extensor tendons from the forearm into the hand they are located on the posterior aspect of the wrist. This tendon helps you bend the thumb.
The wrist is a complex mechanical system of 8 small bones known as the carpal bones.
Thumb anatomy tendons. Flexor pollicis longus. Bones muscles tendons nerves. It is unique to humans.
The wrist links the hand to the arm. Another common thumb injury that is thought to be associated with repetitive gripping motions is trigger finger or trigger thumb. 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.
There are four thumb tendons. Four within the hand and four connecting from the forearm into the bones of the thumb. It starts as a muscle in the forearm and then travels as a tendon in the wrist through the carpal tunnel.
Tendons of the thumb the thumb consists of eight muscles. This allows for the power of gripping and pinching. One row connects with the ends of the bones in the forearm radius and ulna.
The carpal bones are arranged in 2 interrelated rows. Anatomy of the hand and wrist. Each tunnel is lined internally by a synovial sheath and separated from one another by fibrous septa.
This tendon helps you move the thumb away from the palm to form an open hand. The flexor pollicis longus tendon bends the thumb. It is then covered by a tunnel or sheath and inserts into the most distal farthest from your body bone in the thumb.
Abductor pollicis longus.
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