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Shoulder Left

M. Rhomboideus Major

Rhomboid Major (Rhomb Maj L)

The M. Rhomboideus Major (Rhomboid Major) is a muscle of the shoulder region. It is responsible for retraction and elevation of scapula, downward rotation. 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

Retraction and elevation of scapula, downward rotation

Opposite side: Rhomb Maj R
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Anatomy

Origin Proc. spinosi Th2–Th5 Insertion Medial border of scapula (below the spine)

Test Movement

Squeeze shoulder blades together with slightly raised arm

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

Related Muscles in This Region

M. Trapezius Pars Transversa Middle Trapezius SENIAM M. Trapezius Pars Ascendens Lower Trapezius SENIAM M. Deltoideus Pars Clavicularis Anterior Deltoid SENIAM M. Deltoideus Pars Acromialis Middle Deltoid SENIAM M. Deltoideus Pars Spinalis Posterior Deltoid SENIAM
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