Flexor Carpi Radialis Muscle: Anatomic Features and Electromyography Technique Under Ultrasound Control

Fatma Elleuch; Wafa Elleuch; Ahmed Mohameden; Houcem Harbi; Sameh Ghroubi; Habib Elleuch

doi:10.7759/cureus.27936

Flexor Carpi Radialis Muscle: Anatomic Features and Electromyography Technique Under Ultrasound Control

Cureus. 2022 Aug 12;14(8):e27936. doi: 10.7759/cureus.27936. eCollection 2022 Aug.

Authors

Fatma Elleuch¹, Wafa Elleuch², Ahmed Mohameden², Houcem Harbi³, Sameh Ghroubi², Habib Elleuch⁴

Affiliations

¹ Department of Physiology, Habib Bourguiba Hospital, University of Sfax, Sfax, TUN.
² Department of Physical Medicine and Rehabilitation, Habib Bourguiba Hospital, University of Sfax, Sfax, TUN.
³ Department of General Surgery, Research Laboratory LR21ES04, Habib Bourguiba Hospital, University of Sfax, Sfax, TUN.
⁴ Department of Physical Medicine and Rehabilitation, Research Laboratory LR20ES09, Habib Bourguiba Hospital, University of Sfax, Sfax, TUN.

Abstract

The electromyographic assessment of the flexor carpi radialis muscle (FCRM) in the context of an upper limb extensors' deficiency helps physicians in differentiating radial nerve damage from C7 radicular impairment. Ultrasound (US)-guided electromyography (EMG) is mandatory to locate this muscle, particularly in the case of muscle atrophy, denervation, and neuromuscular disorders. The aim of this manuscript is to illustrate the anatomical specific features of the FCRM and the technical procedure of FCRM EMG with US guidance.

Keywords: anatomy; electromyography; extensors' deficiency; flexor radialis carpi muscle; ultrasound.