Extensor Carpi Radialis Longus (ECRL L)
The M. Extensor Carpi Radialis Longus (Extensor Carpi Radialis Longus) is a muscle of the forearm region. It is responsible for wrist dorsiflexion and radial abduction. This muscle is not covered by the official SENIAM catalogue — placement is based on established clinical literature. This page documents the exact electrode position, anatomical attachments and a standardized test movement based on Hermens et al. (2000).
Wrist dorsiflexion and radial abduction
30% on line from lateral epicondyle to Proc. styloideus radii
Orientation: Parallel to the radius
Riek S, Carson RG. A new technique for the selective recording of extensor carpi radialis longus and brevis EMG. J Electromyogr Kinesiol. 2000;10(4):249-57.
Based on SENIAM recommendations (Hermens et al. 2000). Not an official SENIAM product. See all references →
Fist closure with wrist dorsiflexion and radial abduction against resistance
This muscle has no SENIAM-standardized electrode position. Placement should be based on anatomical knowledge.
The electrode is placed — what next? easyEMG visualises muscle activity in real time, with SENIAM-compliant placement guidance, up to 4 channels at once and biofeedback training right afterwards.
In therapy, this muscle is usually about tone regulation and consciously relaxing below a threshold.
Interactive SENIAM electrode placement — free, instant access, no sign-up required.
Open 3D Viewer →40 muscle protocols (SENIAM + peer-reviewed) on 80 pages, print-ready. Free via email.
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