Where does the ECRB attach?
This article will discuss the anatomy and function of extensor carpi radialis brevis….Extensor carpi radialis brevis muscle.
| Origin | Lateral epicondyle of humerus (common extensor tendon) |
|---|---|
| Insertion | Posterior aspect of base of metacarpal bone 3 |
| Action | Wrist joints: Hand extension, hand abduction (radial deviation) |
| Innervation | Radial nerve (C5- C6) |
What is the ECRB tendon?
The extensor carpi radialis brevis (ECRB) muscle helps stabilize the wrist when the elbow is straight. This occurs during a tennis groundstroke, for example. When the ECRB is weakened from overuse, microscopic tears form in the tendon where it attaches to the lateral epicondyle. This leads to inflammation and pain.
What does the ECRB muscle do?
The extensor carpi radialis brevis muscle aids in moving the hand. Specifically, it abducts and extends the hand at the wrist joint. The muscle works in concert with the extensor carpi radialis longus, which is situated nearby.
What is intersection syndrome?
Intersection syndrome is a condition that affects the first and second compartments of the dorsal wrist extensors. The condition is thought to occur as a result of repetitive friction at the junction in which the tendons of the first dorsal compartment cross over the second, creating a tenosynovitis.
What is the EDC muscle?
Extensor digitorum (ED) muscle, also known as extensor digitorum communis (EDC) muscle, is a muscle of the superficial layer of the posterior compartment of the forearm and with other extensor muscles arises from a common tendon attached to the lateral epicondyle of the humerus.
What actually is tennis elbow?
Tennis elbow is a condition that causes pain around the outside of the elbow. It’s clinically known as lateral epicondylitis. It often happens after overuse or repeated action of the muscles of the forearm, near the elbow joint.
How do you distinguish between ECRL and Ecrb?
The ECRL arises from the distal third of the lateral supracondylar ridge of the humerus and the adjacent portion of the lateral intermuscular septum, while the ECRB arises from the front of the lateral epicondyle of the humerus and the fascia covering the common extensor origin.
Is intersection syndrome painful?
Intersection syndrome is a painful condition of the forearm and wrist. It can affect people who do repeated wrist actions, such as weight lifters, downhill skiers, and canoeists. Heavy raking or shoveling can also cause intersection syndrome.
Does intersection syndrome go away?
Treatment of intersection syndrome is almost always easily accomplished with some simple steps. Foremost, the tendons require rest, and this means avoiding activity with the affected wrist for at least 3-5 days while the inflammation subsides. Not resting the condition will exacerbate symptoms and prolong symptoms.
What is EDC hand?
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.
Where does the ECRB attach to the metacarpal?
Insertion [edit | edit source] It attaches at dorsal surface of the base of the 3rd metacarpal. Nerve [edit | edit source] ECRB is innervated by the deep branch of radial nerve (7th and 8th cervical nerve root) before the nerve courses through the two heads of the supinator muscle. Artery [edit | edit source]
Where does the blood supply for ECRB come from?
ECRB is innervated by the deep branch of radial nerve (7th and 8th cervical nerve root) before the nerve courses through the two heads of the supinator muscle The main blood supply to ECRB is from the radial artery. Other augmentation are from the radial collateral branch from profunda brachii and the radial recurrent artery .
Is the ECRB muscle palpated during pronation?
With the hand in pronation, the ECRB muscle can be palpated during extension and abduction of the wrist against resistance. If playback doesn’t begin shortly, try restarting your device.
Where is the extensor carpi radialis brevis located?
Extensor carpi radialis brevis (ECRB) is a short muscle emerging underneath the extensor carpi radialis longus and both muscles share a common tendinous synovial sheath. It is an extensor muscle located superficially at the posterior compartment of the forearm. Origin