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Extensor Carpi Radialis Longus

Extensor Carpi Radialis Longus
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  •    April 28, 2017
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Extensor Carpi Radialis Longus

An individual develops Extensor Carpi Radialis Longus Pain only if this muscle gets too tight or it contains trigger points precipitating pain. This pain is usually on the lateral side of the elbow. More often than not this pain mimics pain that is experienced during Tennis Elbow pain. In addition, an individual can have pain all the way from the forearm into the back half of the hand. The affected individual will tend to have a weak grip and may also drop things frequently. The most common cause of tight Extensor Carpi Radialis Longus muscle or trigger points in this muscle is overuse, especially having repetitive strong grip. When we speak of a strong grip, there are many sporting events which require an individual to have a strong grip like backhand shot in tennis, individuals involved in rock climbing, weight lifters are also prone to pain of the Extensor Carpi Radialis Longus. Individuals especially retired people who spend most of their time gardening and doing yard work also can get tight Extensor Carpi Radialis Longus and subsequent pain. Individuals who are in construction who require frequent use of screw drivers also can develop Extensor Carpi Radialis Longus pain.
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Extensor Carpi Radialis Longus

Underarmens muskulatur Extensor carpi radialis longus (latin: musculus extensor radialis longus, “långa radiala handlovssträckarmuskeln”), i människans anatomi en skelettmuskel på underarmens baksida. Som namnet antyder är dess främsta uppgift att extendera handleden. Extensor carpi radialis longus har sitt ursprung i den distala tredjedelen av överarmsbenets (humerus) laterala kant (margo lateralis humeri, septum intermusculare brachii laterale) distalt om m. brachioradialis. Muskeln är relativt lång och sträcker sig parallellt med m. brachioradialis. Knappt halvvägs längs med strålbenet (radius) blir muskeln en sena som löper mellan m. brachioradialis och m. extensor carpi radialis brevis. Tillsammans med brevis följer longus strålbenet till extensorretinaklet (retinaculum extensorum) genom dess andra senfack. Muskeln fäste finns vid andra metakarpalbenets bas (basis ossis metacarpalis II). Extensor carpi radialis longus innerveras av n. radialis. Litteratur Anatomisk atlas, Michael Budowick, Jan G. Bjålie, Bent Rolstad, Kari C. Toverud, Liber, ISBN 91-47-00091-0 Rörelseapparatens anatomi, Finn Bojsen-Møller, Liber, ISBN 91-47-04884-0 Se även Handlov Arm Lista över skelettmuskler Denna anatomirelaterade artikel saknar väsentlig information. Du kan hjälpa till genom att tillföra sådan.
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Extensor Carpi Radialis Longus

To understand the structure of the Extensor Carpi Radialis Longus, this muscle originates from the lateral supracondylar ridge of humerus, the lateral intermuscular septum, and a few fibers originate from the lateral epicondyle of the humerus. These fibers culminate at the upper third part of the forearm into a flat tendon. This tendon traverses along the lateral border of radius underneath the Abductor Pollicis Longus and Extensor Pollicis Brevis. This then traverses underneath the Dorsal Carpal Ligament where it settles in a groove behind the radius which is common to it as well as the Extensor Carpi Radialis Brevis which is present just behind the styloid process. The Extensor Carpi Radialis Longus muscle is one of the three muscles which form the radial forearm. Initially, it is located adjacent to the brachioradialis; however, it is mostly a tendon early on. It then passes between the Brachioradialis and the Extensor Carpi Radialis Brevis. It continues into the second tendon compartment together with the Extensor Carpi radialis Brevis muscle. It is then inserted into the dorsal surface at the base of the second metacarpal bone at its radial side.
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The extensor carpi radialis longus is a wrist extensor that is innervated by the radial nerve. Though the radial nerve receives contributions from vertebrae levels C5, C6, C7, C8 and T1, studies have shown that the neurons that innervate the extensor carpi radialis longus arise from cervical vertebrae levels C6 and C7. All other major extensor muscles in the superficial layer of the posterior compartment (the extensor digitorum, extensor carpi radialis brevis, extensor carpi ulnaris, and extensor digiti minimi) are innervated by the posterior interosseous branch of the radial nerve.
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The mobile wad of the elbow provides a tremendous mechanical advantage with respect to elbow flexion and wrist extension. Injury to these structures causes significant upper extremity dysfunction. In this article, we report the case of a 31-year-old right hand-dominant man who sustained an isolated avulsion of the extensor carpi radialis longus and brachioradialis origins from the lateral epicondyle and lateral supracondylar ridge. We describe our diagnostic workup and present our surgical repair technique. The literature includes only 2 case reports of bony avulsion fracture of the origin of the brachioradialis and, up until now, no case reports of isolated avulsion of the extensor carpi radialis longus and brachioradialis origins. Given the biomechanics and anatomy of the dorsal mobile wad, we posit that our patient’s injury occurred secondary to an overwhelming eccentric muscle contracture. The rarity of this injury led to a substantial delay in diagnosis. Because of the potential morbidity, surgical intervention is recommended.
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AbstractThe mobile wad of the elbow provides a tremendous mechanical advantage with respect to elbow flexion and wrist extension. Injury to these structures causes significant upper extremity dysfunction. In this article, we report the case of a 31-year-old right hand-dominant man who sustained an isolated avulsion of the extensor carpi radialis longus and brachioradialis origins from the lateral epicondyle and lateral supracondylar ridge. We describe our diagnostic workup and present our surgical repair technique. The literature includes only 2 case reports of bony avulsion fracture of the origin of the brachioradialis and, up until now, no case reports of isolated avulsion of the extensor carpi radialis longus and brachioradialis origins. Given the biomechanics and anatomy of the dorsal mobile wad, we posit that our patient’s injury occurred secondary to an overwhelming eccentric muscle contracture. The rarity of this injury led to a substantial delay in diagnosis. Because of the potential morbidity, surgical intervention is recommended.
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Extensor carpi radialis longus (latin: musculus extensor radialis longus, “långa radiala handlovssträckarmuskeln”), i människans anatomi en skelettmuskel på underarmens baksida. Som namnet antyder är dess främsta uppgift att extendera handleden.
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The extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone (metacarpal of the index finger).
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One of the three muscles of the radial forearm group, it initially lies beside the brachioradialis, but becomes mostly tendon early on. Passing between the brachioradialis and the extensor carpi radialis brevis, this tendon continues into the second tendon compartment together with the latter muscle.
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As the name suggests, this muscle is an extensor at the wrist joint and travels along the radial side of the arm, so will also abduct (radial abduction) the hand at the wrist. That is, it manipulates the wrist so as to move the hand towards the thumb (i.e., abduction — away from the mid-position of the hand) and away from the palmar side (i.e., extension—increased angle between the palm and the front of the forearm).

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