What muscles pass under the extensor retinaculum?

What muscles pass under the extensor retinaculum?

It contains the tendons of extensor digitorum longus, extensor hallucis longus, tibialis anterior, and fibularis tertius.

What runs under the flexor retinaculum?

The ulnar artery is a continuation of the brachial artery and is underneath the flexor carpi ulnaris muscle. It lies on top of the flexor retinaculum lateral to the ulnar nerve. The ulnar artery supplies the medial aspect of the forearm and forms the superficial palmar arch providing blood to the hand.

What is the extensor retinaculum attach to?

It is obliquely orientated and attaches proximally to the lateral surface of the distal radius towards the styloid process and distally attaches to the pisiform and triquetral bones.

Which extensor tendon passes through the fifth channel of extensor retinaculum of wrist?

Extensor digiti minimi tendon
Structure

Compartment Component(s)
2 Extensor carpi radialis longus tendon Extensor carpi radialis brevis tendon
3 Extensor pollicis longus tendon
4 Extensor digitorum tendons Extensor indicis tendon
5 Extensor digiti minimi tendon

What is the function of extensor retinaculum?

The extensor retinaculum of the wrist is the broad ligamentous sheet located at the dorsal aspect of the wrist and functions to keep the extensor tendons in alignment and prevent bowstringing during movement.

How do you fix extensor tendonitis?

You can treat some cases of extensor tendonitis at home. Rest the affected foot for two to three days. Use it as little as possible to give the tendons a break. While you are resting your foot, put ice on it for 20 minutes every two or three hours.

What happens when you cut the flexor retinaculum?

After division of the flexor retinaculum, the palmar SSCT displacement increased, especially in wrist flexion. We have demonstrated that the SI between the tendon and median nerve increased significantly, not only for wrist extension, but also during wrist flexion.

How do you treat flexor retinaculum?

Treatment: Rest, icing, and, compression socks to bring down swelling are generally the top recommended treatments for a strained flexor retinaculum.

Where is extensor retinaculum found?

wrist
The extensor retinaculum of the wrist is the broad ligamentous sheet located at the dorsal aspect of the wrist and functions to keep the extensor tendons in alignment and prevent bowstringing during movement.

What is distal intersection syndrome?

Distal intersection syndrome also referred to as tenosynovitis of the radial wrist extensors is characterized by the radial wrist and forearm pain. Distal intersection syndrome is tenosynovitis of the third extensor compartment (extensor pollicis longus) where it crosses the second extensor compartment.

What is extensor mechanism of wrist?

The extensor hood spreads out further distally into a median band which attaches to the middle phalanx and two lateral bands which attach to the distal phalanx. Contraction of the extensor digitorum muscle tightens this tendon which acts on these attachments and extends the fingers.

What is the extensor retinaculum of wrist?

The extensor retinaculum is a fibrous thick- ening of the investing fascia, extending around the wrist to become continuous with the volar carpal ligament.

What muscles extend the wrist?

The muscles that extend the hand at the wrist include the extensor carpi radialis longus and brevis along with the extensor carpi ulnaris. The muscles that flex the fingers include the flexor digitorum superficialis and profundus, while the muscles that extend the fingers include the extensor digitorum.

What is the first extensor compartment of the wrist?

The first extensor compartment is located on the lateral (radial) aspect of the wrist. It transmits two tendons: Extensor pollicis brevis. Abductor pollicis longus.

What is the second extensor compartment?

Compartment 2. The second extensor compartment contains the tendons of the extensor carpi radialis longus and extensor carpi radialis brevis. This compartment is separated from compartment 3 by Lister’s tubercle – a bony prominence of the distal aspect of the radius.

What is the extensor sheath?

The extensor tendon sheaths are balloon-like spaces enclosed by a thin membrane. They contain a small amount of synovial fluid (egg yolk-consistency fluid that provides lubrication and nutrition to the tendon). These tendon sheaths are located on the fronts and sides of high motion areas in the limb.

What muscles pass under the extensor retinaculum? It contains the tendons of extensor digitorum longus, extensor hallucis longus, tibialis anterior, and fibularis tertius. What runs under the flexor retinaculum? The ulnar artery is a continuation of the brachial artery and is underneath the flexor carpi ulnaris muscle. It lies on top of the flexor retinaculum…