What is the Retinaculum Extensorum?

What is the Retinaculum Extensorum?

Anatomical Parts The extensor retinaculum (dorsal carpal ligament; posterior annular ligament) is an anatomical term for the thickened part of the antebrachial fascia that holds the tendons of the extensor muscles in place.

What is flexor extensor retinaculum?

Flexor retinaculum is a strong fibrous band which bridges the anterior concavity of the carpal bones thus converts it into a tunnel, the carpal tunnel.

What tendons pass under the extensor retinaculum?

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.

What is continuous with the extensor retinaculum?

Extensor retinaculum. Continuous with the fascia of the forearm and attached laterally to the radius and medially to the triquetrum and pisiform bones. The extensor retinaculum works to retain the tendons that are near the bone while allowing proximal and distal gliding of the tendons (Figure 33-1B).

What does the retinaculum do?

A retinaculum (plural retinacula) is a band of thickened deep fascia around tendons that holds them in place. It is not part of any muscle. Its function is mostly to stabilize a tendon. The term retinaculum is New Latin, derived from the Latin verb retinere (to retain).

What is the function of the retinaculum at the wrist?

The flexor retinaculum protects nine of the forearm flexor tendons and median nerve as they pass through the carpal tunnel. [1] If this tissue becomes inflamed, swollen, or fibrotic, the median nerve can become irritated or compressed, leading to carpal tunnel syndrome.

Is flexor retinaculum carpal tunnel?

The flexor retinaculum is the roof of the carpal tunnel, through which the median nerve and tendons of muscles which flex the hand pass.

What does the extensor retinaculum attach to?

The extensor retinaculum is attached laterally to the lateral margin of the radius. However, it is not attached to the ulna, as the distance between these two bones varies with supination and pronation of the forearm. Instead the medial attachment is to the pisiform bone and triquetral bone.

How is retinaculum treated?

TREATMENT. Restrictions of the retinacula can be treated quite effectively with Manual Therapy and a series of corrective exercises. Treating with manual therapy involves breaking restrictions between the retinaculum and the tendon.

Can the retinaculum tear?

Superior peroneal retinaculum tears are often mistaken for lateral ankle instability. These tears often do not heal readily by themselves and must be identified so that proper treatment can begin.

Is retinaculum a tendon?

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.

Does the extensor retinaculum enclose the carpal tunnel?

It is located on the back of the forearm, just proximal to the hand. It is continuous with the palmar carpal ligament, which is located on the anterior side of the forearm….

Does torn retinaculum require surgery?

Nonsurgical Treatment If the injury is acute, treatment without surgery may involve placing the ankle in a short-leg cast for four to six weeks. The goals are to allow the torn retinaculum to heal and to prevent chronic subluxation. Doctors may have their patients begin physical therapy once the cast is removed.

What is retinaculum its function?

What causes flexor retinaculum pain?

This can occur from swollen varicose veins, a tumor (noncancerous) on the tibial nerve, and swelling caused by other conditions, such as diabetes. As pressure increases in the tarsal tunnel, the nerve is the most sensitive to the pressure and is squeezed against the flexor retinaculum.