Infraspinatus (Infra L)
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.
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