Flexor carpi radialis

Dr Henry Knipe et al.

Flexor carpi radilalis (FCR) is a muscle found in the first layer of the anterior compartment of the forearm. It passes though the carpal tunnel by itself in a small separate tunnel along the scaphoid and trapezium.


  • origin: medial epicondyle of the humerus, antebrachial fascia
  • insertion: base of the 2nd and 3rd metacarpals, smal slip to trapezial tuberosity
  • innervation: median nerve (C6-7)
  • action: It is flexor and adductor of the wrist joint

Upper limb anatomy
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Article Information

rID: 23239
Section: Anatomy
Synonyms or Alternate Spellings:
  • Flexor carpi radialis muscle
  • FCR

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Cases and Figures

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    Case 1: x-ray
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    Case 1: ultrasound
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    Figure 1: carpal tunnel diagram
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