At the proximal edge of the fds, a tight fibrous arch also known as the sublimis arch bridging the heads of the fds may impinge on the median nerve and result in pronator syndrome. The muscles and tendons of the first type include the flexor digitorum sublimis fds. The flexor digitorum profundus muscle originates from the ulna, which is the long bone on the pinkyside of the forearm. The tendon then passes laterally to tibialis posterior tendon where it then situated deep to the flexor retinaculum lying in its own synovial sheath along the medial aspect of the sustentaculum tali. The flexor digitorum profundus is a muscle in the forearm of humans that flexes the fingers also known as digits.
Flexor digitorum superficialis flexor digitorum sublimis is an extrinsic flexor muscle of the. Find out in this lesson as you go over the origin, insertion, and actions of the flexor digitorum. Flexor digitorum superficialis muscle getbodysmart. Rupture of the belly of the forearm flexor muscles is rare. This diagram also shows the triggerpoint and referred pain for the flexor digitorum profundus. The flexor pollicis longus muscle has its origin at the anterior side of the radius and the interosseous membrane, sometimes also at the medial epicondyle of the humerus. The finger flexion deformity will be worse with maximum wrist extension than with maximum wrist flexion if the deformity is secondary to contracture of the flexor digitorum superficialis and flexor digitorum profundus tendons. Posterior surface of tibia distal to popliteal line insertion. Extensor digitorum longus, extensor digitorum brevis description.
Palsy of the flexor pollicis longus and the flexor digitorum. Specifically, this muscle originates from the front. Flexor digitorum longus pain can occur with a trip and fall on uneven surface when the toes are not able to grip the surface totally. Test for the power of flexor digitorum sublimis the bmj. Flexor digitorum superficialis muscle origin, anatomy.
Beneath the tendinous origin of the flexor digitorum superficialis muscle. The term digitorum is from the latin digitus, which originally meant the pointing thing, a term that is similar to the sanskrit word dic meaning to show or point out. Anatomy flexor digitorum superficialis muscle flashcards. Compare flexor carpi radialis, flexor carpi ulnaris, palmaris longus, pronator teres. Superficialistoprofundus tendon transfer clinical gate. The ulnar collateral ligament of elbow joint gives its origin to part of this muscle. We report a case of a flexor digitorum superficialis muscle belly rupture that occurred during this form of muscle training. Flexor digitorum superficialis fds takes its origin by two heads. Pdf anatomical variations of the flexor digitorum superficialis fds muscle and tendon unit are frequently reported by anatomists and clinicians find, read and cite all the research you. Flexor digitorum profundus muscle origin, insertion, innervation. Of the eight muscles found here, five are considered to be in the superficial layer, or close to the skin, and three are in the deep layer, or close to the bone. The muscle flexes the second phalanx of each finger and, by continued action, the hand. The flexor digitorum profundus is situated on the ulnar side of the forearm, immediately beneath the superficial flexors. Morphometry and anatomical variations of flexor digitorum superficialis.
The flexor digitorum superficialis muscle is the only muscle of the intermediate compartment. Common flexor tendon from the medial epicondyle of the humerus, ulnar collateral ligament of the elbow joint, and deep antebrachial fascia. The muscle belly is located at the medial and posterior of the calf where is travels down to form a tendon about 3 fingers breath above the medial malleous. Also known as flexor digitorum sublimis, it is an external flexor muscle located at the proximal interphalangeal joints. Mar 24, 2015 the flexor digitorum profundus helps flex the fingers.
Flexor digitorum longus muscle synonyms, flexor digitorum longus muscle pronunciation, flexor digitorum longus muscle translation, english dictionary definition of flexor digitorum longus muscle. Pdf various anomalies of the flexor digitorum superficialis fds and flexor digitorum profundus fdp. Therefore, the jersey finger remains a rare injury, although it is the most frequent closed. Jul 09, 2015 the flexor pollicis longus muscle has its origin at the anterior side of the radius and the interosseous membrane, sometimes also at the medial epicondyle of the humerus. Morphometry and anatomical variations of flexor digitorum. Jan 24, 2019 the function of the flexor digitorum longus muscle is to facilitate movement of the foot. Nerve to the flexor digitorum superficialis muscle and its spinal segment. The flexor digitorum brevis lies in the middle of the sole of the foot, immediately above the central part of the plantar. Mar 27, 2015 the flexor digitorum superficialis is an extrinsic muscle that allows the four medial fingers of the hand to flex.
We present the longterm outcome of an isolated closed rupture of the flexor digitorum superficialis fds tendon of the nondominant left ring finger in a 46yearold male, with a delay not only in making the diagnosis but also in treating. These fingers include the index, middle, ring, and pinkie fingers. In different neurologic conditions, the wrist flexor musculature may also be spastic. A patient had a ruptured flexor digitorum sublimis tendon of the long finger in the region of decussation. Median anterior interosseous, muscular branches of ulnar. When the muscle undergoes tractional force in isometric weight training, there is a potential for it to rupture and result in the formation of a haematoma. Flexor digitorum profundus questions and study guide. Isolated closed rupture of the flexor digitorum superficialis.
It is considered an extrinsic hand muscle because it acts on the hand while its muscle belly is located in the forearm. The flexor digitorum superficialis is an extrinsic muscle that allows the four medial fingers of the hand to flex. Flexor digitorum superficialis flexor digitorum sublimis is an extrinsic flexor muscle of the fingers at the proximal interphalangeal joints. If action continues, flexes proximal phalanges, hand at wrist, and forearm at elbow. Test yourself while observing the flexor digitorum superficialis muscle. The objective is to provide surgeons and other healthcare providers the information critical for treating persons with complex peripheral nerve trauma. A yiew of the outer layer of the mus cles on the front of the forearm flex ors. The flexor digitorum superficialis is a muscle that can be found in the forearm, wrist, and hand. Originates from the ulna and associated interosseous membrane. The flexor digitorum superficialis is a muscle that helps to flex your fingers. The flexor digitorum profundus or flexor digitorum profundus muscle, latin. The flexor digitorum longus also flexor digitorum longus muscle, latin. After a minor trauma, the initial examination at another hospital was stated to be unremarkable. Proximal stump of flexor digitorum superficialis tendon.
The muscle originates in the upper part of the ulna bone. The flexor digitorum profundus lies directly beneath the flexor digitorum superficialis. An overview of the anterior muscles of the forearm. Origin, humeroulnar head from the medial epicondyle of the humerus, the medial border of the coronoid process, and a tendinous arch between these points, radial head from the oblique line and middle third of the lateral border of the radius. The injury occurred several weeks after repair of a zone 2 flexor digitorum sublimis and. Flexor digitorum superficialis trigger point diagram, pain patterns and related medical symptoms. Rupture of the flexor digitorum superficialis muscle belly. Attach to the distal phalanges of the four fingers. The insertion of the flexor digitorum profundus is very broad and very solid. Flexor digitorum profundus how is flexor digitorum.
In english this muscles name is the deep muscle that bends the fingers. At the wrist, it splits into four tendons, that pass through the carpal tunnel. It is the only muscle that can flex the distal interphalangeal joints of the fingers. The word flexor comes from the latin flectere meaning to bend. Know the causes, signs, symptoms and treatment for flexor digitorum longus pain. Lets talk about flexor digitorum superficialis origin and work. It inserts at the distal phalanges in the tips of the fingers. Medial epicondyle of the humerus common flexor tendon, as well as parts of the radius and ulna. Flexor digitorum longus muscle definition of flexor. It is sometimes considered to be the deepest part of the superficial layer of this compartment, 1 2 and sometimes considered to be a distinct. Flexor digitorum superficialis medical definition merriam. Test for the power of flexor digitorum sublimis br med j 1956. Learn vocabulary, terms, and more with flashcards, games, and other study tools. In the current study, we traced the remarkable development of the fds tendons and muscles and showed that the sublimis muscles first form as differentiated myofibers in the autopod before moving to their final location in the zeugopod.
Flexor digitorum sublimis muscle definition of flexor. The flexor digitorum superficialis is a muscle contained within the anterior compartment of the forearm, located on the palm side of the arm. Splits into four slips after passing through medial intermuscular septum of plantar surface of foot. C7, c8, t1 median nerve flexor digitorum superficialis branches. Rupture of the flexor digitorum superficialis medscape. Flexor digitorum sublimis tendon development depends on.
Medial process of calcaneus, plantar aponeurosis, intermuscular septa insertion. Often, two branches from the median nerve innervate the fds proximal and distal. Medical definition of flexor digitorum superficialis. Flexor digitorum sublimis how is flexor digitorum sublimis. Start studying anatomy flexor digitorum superficialis muscle. It can sometimes be classed as a superficial layer muscle, but in most cadavers, it lies between the deep and superficial layers of the muscle. Insertion tendons split to insert onto sides of middle phalanges of medial four fingers. What is flexor digitorum profundus and superficialis.
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