Musculus omotransversarius
A strap-like muscle running from the wing of the atlas to the shoulder. It advances the limb and turns the head to the side. Located superficially on the lateral neck.
Origin: Wing of the atlas (C1) and transverse process of C2
Insertion: Spine of the scapula (acromion region)
Action: Advances the forelimb; lateral flexion of the neck
Innervation: Accessory nerve (CN XI) and ventral branches of cervical nerves
The omotransversarius commonly develops trigger points and spasm from poor rein contact, dental issues causing head tilt, or trauma.
The omotransversarius commonly develops trigger points and spasm from poor rein contact, dental issues causing head tilt, or trauma. Signs include: Resistance to turning the head to one side; reduced forelimb protraction on the affected side; palpable taut bands in the lateral neck; improved after massage or myofascial release.
See the Omotransversarius on our interactive 3D horse model. Open 3D Model