Table of Contents
What is the EDC tendon?
Description. The extensor digitorum communis is a superficial extensor muscle located in the posterior compartment of the forearm. It shares a common synovial tendon sheaths along with other extensor muscles which helps to reduce friction between the tendon and the surrounding structures.
What is palmaris longus tendon?
The palmaris longus is a muscle visible as a small tendon located between the flexor carpi radialis and the flexor carpi ulnaris, although it is not always present. It is absent in about 14 percent of the population; however, this number can vary in African, Asian, and Native American populations.
Where are tendons located in your hand?
There are two types of tendons in the hand, extensor and flexor tendons. Extensor tendons allow you to straighten your fingers while the flexor tendons allow you to bend them. Extensor tendons are located on the back of the hands and directly on the bone just beneath the skin.
Where are the tendons and ligaments in your hand?
The main tendons of the hand are: superficialis tendons, which pass through the palm side of the wrist and hand, and attach at the bases of the middle phalanges. They act with the profundus tendons to flex the wrist and MCP and PIP joints.
What is extensor tendon?
Extensor tendons run just underneath the skin along the back of the hands and wrists. They control the hand’s ability to straighten the fingers and wrists. A mallet finger injury happens when a finger is jammed, causing an extensor tendon to rupture at the base of the finger joint.
What is Vaughan Jackson syndrome?
The term Vaughan-Jackson syndrome refers to disruption of the digital extensor tendons, beginning on the ulnar side of the hand and wrist with the extensor digiti minimi (EDM) and extensor digitorum communis (EDC) tendon of the small finger.
How do you flex palmaris longus?
Besides flexing the hand on the wrist, these muscles have their own additional actions. The specific actions of palmaris longus are wrist flexion and tensioning the palmar aponeurosis….Palmaris longus muscle.
| Origin | Medial epicondyle of humerus |
|---|---|
| Action | Wrist joint: Wrist flexion; Tenses palmar aponeurosis |
| Innervation | Median nerve (C7, C8) |
How do you know if you have a palmaris longus?
Gently flex your wrist and touch your pinky finger to your thumb. If the tendon over the top of the inside of your wrist is visible, you have it. If not, you likely don’t. It’s also perfectly normal to have it one arm but not the other.
How do you loosen tendons in your hand?
Claw Stretch
- Hold your hand out in front of you, palm facing you.
- Bend your fingertips down to touch the base of each finger joint. Your hand should look a little like a claw.
- Hold for 30 to 60 seconds and release. Repeat at least four times on each hand.
How do I know if I tore a tendon in my hand?
Symptoms of traumatic tendon injuries include:
- Inability to bend finger joints.
- Numbness or tingling in fingertips.
- Pain when extending the fingers.
How long do extensor tendons take to heal?
The tendon may take eight to twelve weeks to heal completely. Longer periods of splinting are sometimes needed. Your doctor will apply the splint in the correct place and give you directions on how long to wear it. Other treatment for an extensor tendon injury may include stitches (for cuts in the tendon).
Can extensor tendon heal on its own?
If a tendon is torn or cut, the ends of the tendon will pull far apart, making it impossible for the tendon to heal on its own. Occasionally, extensor tendons may be partially cut or torn.