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Splenius Capitis (Full)

musculus splenius capitis

The splenius capitis is the superficial posterior cervical muscle running diagonally from the nuchal ligament to the mastoid, acting as an ipsilateral head rotator. The greater occipital nerve passes between the semispinalis capitis and splenius capitis. Entrapment here produces occipital neuralgia. Splenius capitis trigger points refer pain to the top and behind the eyes producing the 'finger-point headache' pattern.

An expanded entry for Splenius Capitis.

Anatomical Data

Origin, Insertion & Supply

OriginLigamentum nuchae and spinous processes of C7-T3
InsertionMastoid process and lateral superior nuchal line, deep to the sternocleidomastoid
Nerve SupplyLateral branches of dorsal rami of C2-C3
Blood SupplyOccipital artery
Biomechanics

Function & Actions

Actions
  • Bilateral: head and neck extension
  • Unilateral: ipsilateral lateral flexion and rotation (rotates the head to the same side, opposite to the sternocleidomastoid)

It extends the head and neck and rotates the head toward the same side, contributing to head turning and to holding the head upright.

Clinical Relevance

Clinical Notes

Splenius capitis strain from sudden head rotation or chronic sustained neck flexion (forward head posture) produces unilateral posterior cervical pain and restricted rotation. The muscle is targeted in cervical manipulation and dry needling for cervicogenic headache.

Palpation

The splenius capitis is palpable at the lateral posterior neck between the trapezius and sternocleidomastoid from the mastoid to the upper thorax, becoming firm during resisted ipsilateral head rotation.

Pathology

Common Injuries & Conditions

Splenius Capitis Strain

Acute posterior cervical muscle tear from sudden rotation or whiplash producing restricted ipsilateral rotation managed with manual therapy and progressive loading.

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