Quick Answer: What are the extensor tendons of the wrist?

How many extensor tendons are in the wrist?

The upper extremity contains 12 extensor tendons. These tendons comprise an extensor system that dorsally maneuvers the wrist, thumb, and all fingers.

Relevant Anatomy.

Full Name Extensor pollicis longus
Insertion Distal phalanx of thumb
Function Extends thumb IP joint
Origin Proximal ulna
Ext. Compartment III

What are extensor tendons?

Extensor tendons run just underneath the skin along the back of the hands and wrists. They control the hand’s ability to straighten the fingers and wrists. A mallet finger injury happens when a finger is jammed, causing an extensor tendon to rupture at the base of the finger joint.

What tendon extends the wrist?

Summary table

Muscle Origin Action
Extensor digitorum common extensor tendon extends fingers, wrist
Extensor digiti minimi extends little finger at all joints
Extensor carpi ulnaris common extensor tendon, ulna extends, adducts wrist
Abductor pollicis longus ulna, radius, interosseous membrane abducts, extends thumb

What are the 6 extensor compartments?

The dorsal extensor tendons pass under an extensor retinaculum and are divided into 6 compartments, as follows: Radial wrist abductor (abductor pollicis longus tendon) and thumb extensor (extensor pollicis brevis tendon) dorsal to the trapezium bone. … Extensor digiti minimi tendon to the fifth digit.

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Can tendons heal naturally?

Although many minor tendon and ligament injuries heal on their own, an injury that causes severe pain or pain that does not lessen in time will require treatment. A doctor can quickly diagnose the problem and recommend an appropriate course of treatment.

How do you tell if a tendon is cut?

What are the signs and symptoms of a tendon laceration?

  1. A deep cut or wound in the skin that covers the tendon.
  2. Trouble straightening or bending the body part with the tendon laceration.
  3. Pain.
  4. Swelling or bruising.

How do you heal an extensor tendon?

Splints hold the tendon in place and should be worn at all times until the tendon is healed. The tendon may take eight to twelve weeks to heal completely. Longer periods of splinting are sometimes needed. Your doctor will apply the splint in the correct place and give you directions on how long to wear it.

What happens if tendonitis goes untreated?

If tendonitis is left untreated, you could develop chronic tendonitis, a tendon rupture (a complete tear of the tendon), or tendonosis (which is degenerative). Chronic tendonitis can cause the tendon to degenerate and weaken over time.

Can extensor tendons heal on their own?

A partially torn extensor tendon will not require surgery but will naturally require bracing and therapeutic exercises to heal in good order and regain function.

Is there a tendon in the wrist that extends to the shoulder?

The palmaris longus is a muscle visible as a small tendon located between the flexor carpi radialis and the flexor carpi ulnaris, although it is not always present.

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How do you know if you have damaged a tendon in your hand?

Symptoms of traumatic tendon injuries include: Inability to bend finger joints. Numbness or tingling in fingertips. Pain when extending the fingers.

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