Table of Contents
What is extensor digitorum brevis?
Extensor Digitorum Brevis is one of the intrinsic muscles on the dorsum of the foot. It arises from the upper and lateral surface of the calcaneous, the floor of tarsal sinus, the talocalcaneal ligament, and the stem of the inferior extensor retinaculum.
Where is the extensor digitorum?
forearm
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 the extensor digitorum longus?
The extensor digitorum longus (EDL) is 1 of 4 muscles in the anterior compartment of the lower leg. The other muscles in the anterior compartment include: tibialis anterior, extensor hallucis longus, and peroneus (fibularis) tertius. EDL is the most lateral muscle in the anterior compartment.
What is the function of the extensor digitorum longus muscle?
The extensor digitorum longus muscle is located at the front of the leg and is adjacent to the peroneus brevis muscle and the tibialis anterior muscle. This wing-shaped muscle works to extend the foot at the ankle, along with the four smallest toes.
What is another name for extensor digitorum?
extensor digitorum communis
The extensor digitorum muscle (also known as extensor digitorum communis) is a muscle of the posterior forearm present in humans and other animals. It extends the medial four digits of the hand.
What type of muscle is extensor digitorum?
Extensor digitorum is a long muscle located in the posterior compartment of the forearm. Together with the extensor carpi ulnaris and extensor digiti minimi, extensor carpi radialis longus and brevis as well as the brachioradialis, it belongs to the group of superficial extensors of the forearm.
Where is the extensor digitorum longus tendon?
The extensor digitorum longus is a pennate muscle, situated at the lateral part of the front of the leg. The mucous sheaths of the tendons around the ankle.
What is the function of flexor digitorum?
The flexor digitorum superficialis flexes the middle phalanges of the medial four digits at the proximal interphalangeal joints. It also flexes the proximal phalanges at the metacarpophalangeal joints and the wrist joint. Flexor digitorum superficialis can flex each finger it serves independently.
What is flexor digitorum longus?
Flexor digitorum longus is a thin muscle that belongs to the deep posterior muscles of the leg. It runs from the posterior surface of the tibia, across the posterior compartment of the leg to the phalanges of the foot. On its course, the muscle receives functional support from the quadratus plantae muscle.
What causes tight extensor digitorum longus?
Most commonly it is the extensor tendon to the big toe (EHL) that is affected. In other instances the extensor tendons to the lesser toes (EDL) is affected. The most common factors that cause extensor tendonitis are excessive tightness of the calf muscles, over exertion during exercise and falling of the foot arch.
What is the origin of extensor digitorum?
Extensor digitorum muscle
| Origin | Lateral epicondyle of humerus (common extensor tendon) |
|---|---|
| Insertion | Extensor expansions of digits 2-5 |
| Action | Metacarpophalangeal / Interphalangeal joints 2-5: Finger extension |
| Innervation | Posterior interosseous nerve (C7, C8) |
How many extensor digitorum are there?
These three muscles enclose a tunnel through which posterior interosseous artery and nerve pass. In the forearm, extensor digitorum is situated medial to extensor carpi radialis brevis muscle and lateral to extensor digiti minimi and extensor carpi ulnaris muscles.
How do you strengthen extensor digitorum?
Hold your arm in front of you, with your thumb facing up. Deviate your hand to one side, and then the other. This exercise will help improve the mobility of your wrist. Repeat ten times.
What causes pain in the extensor digitorum longus?
What does flexor mean in anatomy?
flexor muscle, any of the muscles that decrease the angle between bones on two sides of a joint, as in bending the elbow or knee.
Why is it called the knot of Henry?
Introduction. The term, “Master Knot by Henry, or equivalently used Henry’s Knot ” was first identified as referring to the intersection territory, where the tendon of flexor digitorum longus (FDL) crosses over the tendon of flexor hallucis longus (FHL).
What type of muscle is the extensor digitorum?
superficial extensors
Extensor digitorum is a long muscle located in the posterior compartment of the forearm. Together with the extensor carpi ulnaris and extensor digiti minimi, extensor carpi radialis longus and brevis as well as the brachioradialis, it belongs to the group of superficial extensors of the forearm.