Splenius Capitis and Cervicis work together to extend and rotate the head and neck, but they’re often overlooked when treating posterior neck tension.
If your client always points to the “back of the neck,” these muscles are usually part of the picture.
Splenius Capitis
📍O: Spinous processes of C3-T3, ligamentum nuchae
📍I: Mastoid process, superior nuchal line
📍A: extends, ipsilaterally rotates and laterally flexes neck
Splenius Cervicis (colli)
📍O: Spinous processes of T3-T6
📍I: TVPs of C1-3
📍A: extends, ipsilaterally rotates and laterally flexes neck
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