What is the cause of de Quervain tenosynovitis?
What is the cause of de Quervain tenosynovitis?
The most common cause of de Quervain’s tenosynovitis is chronic overuse of the wrist. Repetitive movements day after day cause irritation and pain. One common movement that causes it is lifting a child into a car seat. Another is lifting heavy grocery bags by the handles.
What is APL and EPB?
The tendon of abductor pollicis longus (APL) and extensor pollicis brevis (EPB) lie side by side within the first dorsal compartment of the wrist lateral to the radial styloid. The volar part of the tunnel contains the larger APL and the dorsal part the smaller EPB.
How long does de Quervain tenosynovitis last?
Treatment for de Quervain’s tenosynovitis is aimed at reducing inflammation, preserving movement in the thumb and preventing recurrence. If you start treatment early, your symptoms should improve within four to six weeks.
Does De Quervain’s tenosynovitis require surgery?
Mild to moderate symptoms from De Quervain’s tenosynovitis can be improved without surgery. But If these more conservative treatments fail, De Quervain’s surgery is the next step.
Where is the APL tendon located?
wrist
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.
Where does APL attach?
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 | 1st metacarpal |
| Artery | Posterior interosseous artery |
| Nerve | Posterior interosseous nerve from deep branch of radial nerve C7, C8 |
Can I work with De Quervain’s tenosynovitis?
How De Quervain’s Tenosynovitis Can Affect Your Ability to Work. If you perform repetitive movements with your hand or wrist as part of your job, De Quervain’s can significantly impact your ability to work. Rapid or high-force pinching or grasping movements may be impossible for someone who suffers from De Quervain’s.
What does APL muscle do?
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.
How do the APL and EPB tendons move the thumb?
The APL and EPB tendons travel side by side through a tunnel near the end of the radius bone of the forearm. The tunnel helps hold the tendons in place, like the guide on a fishing pole. This tunnel lining is a slippery coating called tenosynovium. The tenosynovium allows the two tendons to glide smoothly back and forth as they move the thumb.
What is deafde Quervain’s tenosynovitis?
de Quervain’s tenosynovitis affects two thumb tendons called the abductor pollicis longus (APL) and the extensor pollicis brevis (EPB). The APL and EPB tendons travel side by side through a tunnel near the end of the radius bone of the forearm. The tunnel helps hold the tendons in place, like the guide on a fishing pole.
What is the pathophysiology of tenosynovitis?
Excessive loads or repetitive movements of a tendon through its tendon sheath can cause both chronic tenosynovitis, with inflammation, fibrosis and thickening of the sheath, and “fibrillar creep,” and microtears of the tendon, with swelling and bunching of the fibers.
What is the difference between epidermoid epidermal leukodystrophy (EPB) and APL?
EPB is more dorsal than APL has variable anatomy with APL usually having at least 2 tendon slips and its own fibro-osseous compartment a distinct EPB sheath is often encountered dorsally
