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: These tendons form the lateral border of the anatomical snuffbox. De Quervain’s tenosynovitis is inflammation of the tendons within the first extensor compartment of the wrist, resulting in wrist pain and swelling.
What is the first sign of compartment syndrome?
Some symptoms of acute compartment syndrome include:
- A new and persistent deep ache in an arm or leg
- Pain that seems greater than expected for the severity of the injury
- Numbness, pins-and-needles, or electricity-like pain in the limb
- Swelling, tightness and bruising
What is the first extensor tendon compartment?
- I: extensor pollicis brevis, abductor pollicis longus.
- II: extensor carpi radialis longus, extensor carpi radialis brevis.
- III: extensor pollicis longus. compartments 2 and 3 are divided by Lister's tubercle of the distal radius.
- IV: extensor digitorum, extensor indicis.
- V: extensor digiti minimi.
- VI: extensor carpi ulnaris.
What is first dorsal compartment?
The first dorsal extensor compartment contains the abductor pollicis longus (APL) and the extensor pollicis brevis (EPB) tendons. The condition is named for the Swiss surgeon Fritz de Quervain, who, in 1895, described a painful condition involving the APL and the EPB tendon sheaths at the radial styloid process. de Quervain recommended simple release of the stenotic extensor retinaculum.
What nerve is in the wrist?
The Extensor compartments of the wrist contain the extensor tendons of the hand. It is subdivided into six compartments. The Posterior Interosseous Nerve is the only nerve found in the dorsal wrist compartments. It is consistently found on the base of the fourth compartment.
Where is the brachial plexus located?
The brachial plexus is a complicated network of nerves arises from the anterior rami of the cervical spine…
Where is the extensor retinaculum located?
It is consistently found on the base of the fourth compartment. Anatomic structures within each dorsal compartments of the wrist: The extensor retinaculum provides prevent tendons bowstringing at wrist and should be repaired during surgery. 1.
What is the most commonly injured compartment of the wrist?
The other two most commonly injured are the sixth (extensor carpi ulnaris) and second ( intersection syndrome) compartments.
What is the first compartment of a tendons?
The first compartment is the site where entrapment tendinitis, better known as De Quervain's disease, occurs. Repetitive trauma is believed to cause thickening of the tendons, which lead to movement restriction of the tendons through the compartment.
What are the extensor tendons?
Extensor tendon compartments of the wrist are anatomical tunnels on the back of the wrist that contain tendons of muscles that extend (as opposed to flex) the wrist and the digits (fingers and thumb). The extensor tendons are held in place by the extensor retinaculum.
Where are the extensor tendons located?
The extensor tendons are held in place by the extensor retinaculum. As the tendons travel over the posterior (back) ...
Can a weightlifter dislocate the 6th compartment?
The tendon of 6th compartment (extensor carpi ulnaris) can suffer recurrent dislocation due to a tear of the ulnar side of the compartment.
How many extensors are there in the wrist?
The Extensor Zone VII (wrist) contains 6 extensor compartments comprising of 6 synovial sheath lined tunnels separated from each other by fibrous sheath. These compartments contain tendons of muscles that pass from forearm to hand.
What is the mnemonic for the number of tendons passing through the compartments?
The number of tendons passinf thorugh the compartments (radial to ulnar) can be remembered using the mnemonic: 2-2-1-2-1-1.
How many compartments are there in the wrist?
In the dorsal aspect of wrist , tendons are arranged in 6 compartments.
What is the fourth compartment of the index finger?
FOURTH COMPARTMENT : Includes extensor indicis and extensor digitorum. Extensor indicis is ulnar to the extensor digitorum communis for the index finger. Extensor indices is used as a tendon graft for rupture of the extensor pollicis longus. This won’t affect the function of index finger if the tendon is taken proximal to sagittal band.This compartment has the terminal branch of posterior interosseous nerve (PIN),which supplies sensation to the wrist joint.
What is the first compartment of the pollicis?
FIRST COMPARTMENT : Includes abductor pollicis longus ,extensor pollicis brevis. At this compartment an abnormal pathology that could occur is De Quervain’s syndrome. Abductor pollicis longus may have multiple slips and extensor pollicis brevis may have its own separate compartment.
What is the third component of the EPL tendon?
THIRD COMPARTMENT : Includes extensor pollics longus which is ulnar to lister’s tubercle. EPL tendon can rupture due to nondisplaced distal radial fracture.Test for EPL rupture is by placing the palm flat on the table and lifting the thumb.
