What is APL in anatomy?
The Abductor pollicis longus (APL) is one of a deep extensor of the forearm and is responsible for facilitating movement and stabilization of the thumb. Its tendon is present in the first extensor compartment of the wrist. It lies immediately below the supinator and sometimes unites with it.
What is the APL in the wrist?
The abductor pollicis longus (APL) is one of the primary radial deviators of the wrist, owing to its insertion at the base of the first metacarpal and its large moment arm about the radioulnar deviation axis.
Where does the APL insert?
Base of 1st metacarpal
In human anatomy, the abductor pollicis longus (APL) is one of the extrinsic muscles of the hand….
| Abductor pollicis longus muscle | |
|---|---|
| Origin | ulna, radius, Interosseous membrane |
| Insertion | Base of 1st metacarpal |
| Artery | Posterior interosseous artery |
Where is the EPB tendon?
As mentioned previously, the EPB tendon is classically described as inserting into the dorsum of the base of the proximal phalanx of the thumb.
What is the EPB muscle?
The extensor pollicis brevis (EPB) belongs to the deep group of the posterior fascial compartment of the forearm. It is a part of the lateral border of the anatomical snuffbox.
How do you diagnose intersection syndrome?
Learning points
- Intersection syndrome is a rare but important cause of wrist pain due to repetitive motion or overuse.
- It is diagnosed clinically but MRI and ultrasonography may be used to confirm the diagnosis.
What muscles are involved in intersection syndrome?
They are the extensor pollicis brevis and the abductor pollicis longus. These two muscles start on the forearm, cross over the two wrist tendons, and connect on the back part of the thumb.
What is CXR PA view?
A chest X-ray posteroanterior (PA) view is an imaging test that uses X-rays to look at the structures and organs in your chest. It can help in detecting certain lung and heart problems as well as visualizing the internal organs of the chest which include food pipe and diaphragm.
What is EPB in wrist?
Extensor Pollicis Brevis – Physiopedia Description The extensor pollicis brevis (EPB) belongs to the deep group of the posterior fascial compartment of the forearm.[1] It is a part of the lateral border of the anatomical snuffbox.[2] Origin The extensor pollicis brevis originates from the lower third of the posterior …