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Per Ekstrom et al. 2003 Shoulder Left

M. Serratus Anterior

Serratus Anterior (Serr Ant L)

The M. Serratus Anterior (Serratus Anterior) is a muscle of the shoulder region. It is responsible for protraction and upward rotation of scapula, stabilization against thorax. 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).

Function

Protraction and upward rotation of scapula, stabilization against thorax

Opposite side: Serr Ant R
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Electrode Placement (SENIAM)

Horizontally over 6th rib, below axilla

Orientation: Horizontal, anterior to axillary line

Source: Ekstrom et al. 2003 ↗

Ekstrom RA, Donatelli RA, Soderberg GL. Surface electromyographic analysis of exercises for the trapezius and serratus anterior muscles. J Orthop Sports Phys Ther. 2003;33(5):247-258.

Based on SENIAM recommendations (Hermens et al. 2000). Not an official SENIAM product. See all references \u2192

Anatomy

Origin 1st–9th rib (outer surface) Insertion Medial border of scapula (ventral surface)

Test Movement

Push-up plus (scapular protraction) or push arm forward

This muscle has no SENIAM-standardized electrode position. Placement should be based on anatomical knowledge.

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