Flexor Carpi Radialis: Difference between revisions
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== Description == | == Description == | ||
The flexor carpi radialis muscle is a long, superficial muscle of the forearm that belongs to the anterior muscle group and lies in the first layer. It is a relatively thin muscle located on the anterior part of the forearm. It arises in the [[humerus]] epicondyle, close to the wrist area. It is a superficial muscle that becomes very visible as the wrist comes into flexion. | The flexor carpi radialis muscle is a long, superficial muscle of the forearm that belongs to the anterior muscle group and lies in the first layer. It is a relatively thin muscle located on the anterior part of the forearm. It arises in the [[humerus]] epicondyle, close to the wrist area. It is a superficial muscle that becomes very visible as the wrist comes into flexion. | ||
[[File:Flexor Carpi Radialis.png|center|frame]] | |||
=== Origin === | === Origin === | ||
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=== Nerve === | === Nerve === | ||
The innervation of this muscle is provided by the | The innervation of this muscle is provided by the Median nerve(C6-C7). | ||
=== Artery === | === Artery === | ||
The flexor carpi radialis mainly receives its blood supply (high up in the forearm) via anterior ulnar recurrent artery or posterior ulnar recurrent artery<ref>Standring S, Ellis H, Healy J, Johnson D, Williams A, Collins P, Wigley C. Gray's anatomy: the anatomical basis of clinical practice. American journal of neuroradiology. 2005 Nov;26(10):2703</ref>. | |||
== Function == | == Function == | ||
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== Clinical Relevance == | == Clinical Relevance == | ||
Flexor tendon ruptures in the wrist are uncommon. Flexor carpi radialis (FCR) tendon rupture can occur in rheumatoid patients, following cortisone injection for Tenosynovitis, and following trauma. Attritional FCR tendon ruptures are also seen with scaphotrapezial arthritis<ref>Van Demark RE, Helsper E, Hayes M, Hayes M, Smith VJ. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5684920/ Painful Pseudotendon of the Flexor Carpi Radialis Tendon: A Literature Review and Case Report]. HAND. 2017 Sep;12(5):NP78-83.</ref>. | Flexor tendon ruptures in the wrist are uncommon. Flexor carpi radialis (FCR) tendon rupture can occur in rheumatoid patients, following cortisone injection for Tenosynovitis, and following trauma. Attritional FCR tendon ruptures are also seen with scaphotrapezial arthritis<ref>Van Demark RE, Helsper E, Hayes M, Hayes M, Smith VJ. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5684920/ Painful Pseudotendon of the Flexor Carpi Radialis Tendon: A Literature Review and Case Report]. HAND. 2017 Sep;12(5):NP78-83.</ref>. | ||
The radial artery lies between the tendons of the brachioradialis and flexor carpi radialis, a place commonly used to take the radial pulse. Palpation for the radial artery proximal to the wrist crease and immediately lateral to the tendon of flexor carpi radials muscle is one of the sites to document patient's pulse.<ref>[https://www.ncbi.nlm.nih.gov/books/NBK546626/ery Anatomy, Shoulder and Upper Limb, Forearm Radial Artery]</ref> | |||
== Assessment == | == Assessment == | ||
Manual muscle testing helps in knowing the power of the muscle | Manual muscle testing helps in knowing the power of the muscle | ||
{{#ev:youtube| | {{#ev:youtube|iy7xdLnM_LE|300}}<ref>ACM OTA Class of 2016. MMT Flexor carpi radialis anti gravity & Flexor carpi ulnaris anti gravity. Available from: https://www.youtube.com/watch?v=iy7xdLnM_LE[last accessed 31/8/2021]</ref> | ||
== Resources == | == Resources == | ||
Latest revision as of 13:21, 24 February 2022
Description[edit | edit source]
The flexor carpi radialis muscle is a long, superficial muscle of the forearm that belongs to the anterior muscle group and lies in the first layer. It is a relatively thin muscle located on the anterior part of the forearm. It arises in the humerus epicondyle, close to the wrist area. It is a superficial muscle that becomes very visible as the wrist comes into flexion.
Origin[edit | edit source]
The flexor carpi radialis originates from the medial epicondyle of the humerus, passes obliquely downwards to the lateral side of the forearm.
Insertion[edit | edit source]
The flexor carpi radialis inserts at the bases of the second and third metacarpal bones.
Nerve[edit | edit source]
The innervation of this muscle is provided by the Median nerve(C6-C7).
Artery[edit | edit source]
The flexor carpi radialis mainly receives its blood supply (high up in the forearm) via anterior ulnar recurrent artery or posterior ulnar recurrent artery[1].
Function[edit | edit source]
The main function of FCR is providing flexion of the wrist and assisting in abduction of the hand and wrist. The flexor carpi radialis (FCR) muscle has been suggested to act as a dynamic scaphoid stabilizer. Because the FCR tendon uses the scaphoid tuberosity as a pulley to reach its distal insertion onto the second metacarpal, it has been hypothesized that FCR muscle contraction generates a dorsally directed vector that resists the scaphoid from rotating into flexion[2].
Clinical Relevance[edit | edit source]
Flexor tendon ruptures in the wrist are uncommon. Flexor carpi radialis (FCR) tendon rupture can occur in rheumatoid patients, following cortisone injection for Tenosynovitis, and following trauma. Attritional FCR tendon ruptures are also seen with scaphotrapezial arthritis[3].
The radial artery lies between the tendons of the brachioradialis and flexor carpi radialis, a place commonly used to take the radial pulse. Palpation for the radial artery proximal to the wrist crease and immediately lateral to the tendon of flexor carpi radials muscle is one of the sites to document patient's pulse.[4]
Assessment[edit | edit source]
Manual muscle testing helps in knowing the power of the muscle
Resources[edit | edit source]
- ↑ Standring S, Ellis H, Healy J, Johnson D, Williams A, Collins P, Wigley C. Gray's anatomy: the anatomical basis of clinical practice. American journal of neuroradiology. 2005 Nov;26(10):2703
- ↑ Salvà-Coll G, Garcia-Elias M, Llusá-Pérez M, Rodríguez-Baeza A. The role of the flexor carpi radialis muscle in scapholunate instability. The Journal of hand surgery. 2011 Jan 1;36(1):31-6.
- ↑ Van Demark RE, Helsper E, Hayes M, Hayes M, Smith VJ. Painful Pseudotendon of the Flexor Carpi Radialis Tendon: A Literature Review and Case Report. HAND. 2017 Sep;12(5):NP78-83.
- ↑ Anatomy, Shoulder and Upper Limb, Forearm Radial Artery
- ↑ ACM OTA Class of 2016. MMT Flexor carpi radialis anti gravity & Flexor carpi ulnaris anti gravity. Available from: https://www.youtube.com/watch?v=iy7xdLnM_LE[last accessed 31/8/2021]
