Table 3.

The main group of muscles involved in dystonic posture

Action	Muscles groups
Torticollis	Contralateral sternocleidomastoid Contralateral trapezius Ipsilateral splenius capitis Ipsilateral levator scapulae
Laterocollis	Ipsilateral sternocleidomastoid Ipsilateral splenius capitis Ipsilateral levator scapulae Ipsilateral trapezius
Retrocollis	Bilateral splenius Bilateral semispinalis
Antecollis	Bilateral sternocleidomastoid Bilateral longus colli Bilateral scalenus

This table guides the clinical examination to certain muscles.