Flexor carpi radialis muscle
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At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosuresAt the time the article was last revised Mostafa Elfeky had no financial relationships to ineligible companies to disclose.
View Mostafa Elfeky's current disclosures- Flexor carpi radialis muscles
- Flexor carpi radialis (FCR)
- Flexor carpi radialis tendon
- FCR tendon
Flexor carpi radialis (FCR) is found in the first layer of the anterior compartment of the forearm and is one of the extrinsic muscles of the hand. It does not pass through the carpal tunnel, but rather by itself in a small separate FCR tunnel.
Summary
origin: medial epicondyle of the humerus, antebrachial fascia
insertion: base of the 2nd and 3rd metacarpals, small slip to trapezial tuberosity
arterial supply: anterior ulnar recurrent artery or posterior ulnar recurrent artery 1
innervation: median nerve (C6-7)
action: flexion and radial deviation of the wrist joint
Gross anatomy
FCR tendon is enclosed by a sheath from the level of the distal radius to its insertion at the 2nd/3rd metacarpal bases. The FCR tendon travels above the scaphoid and through the scaphotrapeziotrapezoid joint before entering the FCR tunnel. The tendon enters the tunnel by passing through a vertical groove on the trapezium 1, 2-6.
Distal to the FCR tunnel, the tendon angles dorsally with a primary insertion on the palmar surface of the base of the second metacarpal (80%) and secondary insertion (20%) onto the base of the third metacarpal. The FCR tendon also has some fibers that attach to the trapezial tubercle 1, 2-6.
References
- 1. Susan Standring. Gray's Anatomy. (2008) ISBN: 9780443066849 - Google Books
- 2. Luong D, Smith J, Bianchi S. Flexor Carpi Radialis Tendon Ultrasound Pictorial Essay. Skeletal Radiol. 2014;43(6):745-60. doi:10.1007/s00256-014-1846-1 - Pubmed
- 3. Rotman M & Donovan J. Practical Anatomy of the Carpal Tunnel. Hand Clin. 2002;18(2):219-30. doi:10.1016/s0749-0712(01)00003-8 - Pubmed
- 4. Chummy S. Sinnatamby. Last's Anatomy. (2011) ISBN: 9780702033957 - Google Books
- 5. Keith L. Moore, Arthur F. Dalley, A. M. R. Agur. Clinically Oriented Anatomy. (2013) ISBN: 9781451119459 - Google Books
- 6. Bolles C, Abdella A, Battaglia P. Flexor Carpi Radialis Tenosynovitis Mimicking Carpal Tunnel Syndrome Diagnosed and Monitored with Ultrasound: Case Report. SN Compr Clin Med. 2020;2(6):797-801. doi:10.1007/s42399-020-00320-1]
Incoming Links
- Ganglion cysts of the hand and wrist
- Wrist
- Radial artery
- Tenosynovitis
- Ulnar artery
- Anterior compartment of the forearm
- Scaphoid
- Flexor carpi radialis tendinopathy
- Flexor retinaculum (wrist)
- Carpal tunnel
- Flexor carpi radialis tendon tunnel
- MRI of the wrist (an approach)
- Pronator teres syndrome
- Extrinsic muscles of the hand
- Metacarpal bones
- Median nerve
- Common flexor origin of the elbow
- Radiocarpal joint
- Flexor carpi radialis brevis vel profundus
- Trapezium
- Flexor carpi radialis tenosynovitis
- Median nerve injury
- Reversed palmaris longus muscle
- Median nerve traumatic neuroma
- Flexor carpi radialis tendon laceration
- Acute calcific periarthritis - wrist
- Scaphotrapezial joint ganglion cyst
- Flexor carpi radialis tunnel syndrome
- Acute calcific periarthritis - wrist
- Giant cell tumour of the tendon sheath
- Self-inflicted wrist injury (ultrasound)
- Flexor carpi radialis tenosynovitis
- Flexor carpi radialis tenosynovitis
- Ganglion cyst - flexor carpi radialis tendon sheath
Related articles: Anatomy: Upper limb
-
skeleton of the upper limb
- clavicle
- scapula
- humerus
- radius
- ulna
- hand
- accessory ossicles of the upper limb
- accessory ossicles of the shoulder
- accessory ossicles of the elbow
-
accessory ossicles of the wrist (mnemonic)
- os centrale carpi
- os epilunate
- os epitriquetrum
- os styloideum
- os hamuli proprium
- lunula
- os triangulare
- trapezium secondarium
- os paratrapezium
- os radiostyloideum (persistent radial styloid)
- joints of the upper limb
-
pectoral girdle
-
shoulder joint
- articulations
- associated structures
- joint capsule
- bursae
- ligaments
- movements
- scapulothoracic joint
-
glenohumeral joint
- arm flexion
- arm extension
- arm abduction
- arm adduction
- arm internal rotation (medial rotation)
- arm external rotation (lateral rotation)
- circumduction
- arterial supply - scapular anastomosis
- ossification centers
-
shoulder joint
-
elbow joint
- proximal radioulnar joint
- ligaments
- associated structures
- movements
- alignment
- arterial supply - elbow anastomosis
- development
-
wrist joint
- articulations
-
ligaments
- intrinsic ligaments
- extrinsic ligaments
- radioscaphoid ligament
- dorsal intercarpal ligament
- dorsal radiotriquetral ligament
- dorsal radioulnar ligament
- volar radioulnar ligament
- radioscaphocapitate ligament
- long radiolunate ligament
- Vickers ligament
- short radiolunate ligament
- ulnolunate ligament
- ulnotriquetral ligament
- ulnocapitate ligament
- ulnar collateral ligament
- associated structures
- extensor retinaculum
- flexor retinaculum
- joint capsule
- movements
- alignment
- ossification centers
-
hand joints
- articulations
- carpometacarpal joint
-
metacarpophalangeal joints
- palmar ligament (plate)
- collateral ligament
-
interphalangeal joints
- palmar ligament (plate)
- collateral ligament
- movements
- ossification centers
- articulations
-
pectoral girdle
- spaces of the upper limb
- muscles of the upper limb
- shoulder girdle
- anterior compartment of the arm
- posterior compartment of the arm
-
anterior compartment of the forearm
- superficial
- intermediate
- deep
-
posterior compartment of the forearm (extensors)
- superficial
- deep
- muscles of the hand
-
accessory muscles
- elbow
- volar wrist midline
- palmaris longus profundus
- aberrant palmaris longus
- volar wrist radial-side
- accessory flexor digitorum superficialis indicis
- flexor indicis profundus
- flexor carpi radialis vel profundus
- accessory head of the flexor pollicis longus (Gantzer muscle, common)
- volar wrist ulnar-side
- dorsal wrist
- blood supply to the upper limb
-
arteries
- subclavian artery (mnemonic)
- axillary artery
- brachial artery (proximal portion)
- ulnar artery
- radial artery
- veins
-
arteries
- innervation of the upper limb
- intercostobrachial nerve
-
brachial plexus (mnemonic)
- branches from the roots
- branches from the trunks
- branches from the cords
- lateral cord
- posterior cord
- medial cord
- terminal branches
- lymphatic drainage of the upper limb
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