Infraspinatus (Infra R)
The M. Infraspinatus (Infraspinatus) is a muscle of the shoulder region. It is responsible for external rotation at shoulder joint, stabilization of humeral head (rotator cuff). 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).
External rotation at shoulder joint, stabilization of humeral head (rotator cuff)
4cm below spine of scapula, over infraspinous fossa
Orientation: Parallel to spine of scapula
Boettcher CE, Ginn KA, Cathers I. Standard maximum isometric voluntary contraction tests for normalizing shoulder muscle EMG. J Orthop Res. 2008;26(12):1591-7.
Based on SENIAM recommendations (Hermens et al. 2000). Not an official SENIAM product. See all references →
External rotation of arm at 90 degrees abduction against resistance
This muscle has no SENIAM-standardized electrode position. Placement should be based on anatomical knowledge.
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.
Professional EMG biofeedback software for PicoBlue sensors. Real-time visualization, 5 training modes, PDF reports.