Muscles of the Back

Authors
Affiliations

Doctor of Physical Therapy

B.S. in Kinesiology

Doctor of Physical Therapy

B.A. in Neuroscience

OIAN

Suboccipitals

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Prevertebral Muscles

Table 2: Prevertebral Muscles

Superficial intrinsic back Muscles

Intermediate intrinsic back muscles (Erector Spinae)

Transversospinalis Muscles

Table 5: Transversospinalis muscles
Muscle Origin Insertion Innervation Action

Deep Segmental Back Muscles

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Table 6: Transversospinalis muscles
Muscle Origin Insertion Innervation Action
Anterior Intertransversarii cervicis C2-C7 Anterior tubercle of superior segment C2-C7 Anterior tubercle of inferior segment Spinal nn. (anterior rami) Bilateral: Cervical extension and stabilization, lumbar extension and stabilization
Unilateral: Cervical extension and ipsilateral sidebend, Lumbar extension and ipsilateral sidebend
Interspinales cervicis C1-C7 SP of superior segment C1-C7 SP of inferior segment Spinal nn.
Posterior rami
Cervical: Extension
Lumbar: Extension
Interspinales lumbora L1-L5 SP of superior segment L1-L5 SP of inferior segment Spinal nn.
Posterior rami
Bilateral: Cervical extension and stabilization, lumbar extension and stabilization
Unilateral: Cervical extension and ipsilateral sidebend, Lumbar extension and ipsilateral sidebend
Lateral intertransversarii lumbora L1-L5 TP of superior segment L1-L5 TP of inferior segment Spinal nn. (anterior rami) Bilateral: Cervical extension and stabilization, lumbar extension and stabilization
Unilateral: Cervical extension and ipsilateral sidebend, Lumbar extension and ipsilateral sidebend
Levatores cosatrum breves C7-T11 TP Costal angle of next inferior rib Spinal nn. (posterior rami) Bilateral: Thoracic extension
Unilateral: Thoracic ipsilateral sidebend, contralateral rotation
Levatores costarum longi C7-T11 TP Costal angle of rib 2 segments inferior Spinal nn. (posterior rami) Bilateral: Thoracic extension
Unilateral: Thoracic ipsilateral sidebend, contralateral rotation
Medial intertransversarii cervicis
Medial intertransversarii lumbora L1-L5 Mammillary process of superior segment L1-L5 Mammillary process of inferior segment Spinal nn. (posterior rami) Bilateral: Cervical extension and stabilization, lumbar extension and stabilization
Unilateral: Cervical extension and ipsilateral sidebend, Lumbar extension and ipsilateral sidebend
Posterior intertransversarii cervicis C2-C7 Posterior tubercle of superior segment C2-C7 Posterior tubercle of superior segment Spinal nn. (posterior rami) Bilateral: Cervical extension and stabilization, lumbar extension and stabilization
Unilateral: Cervical extension and ipsilateral sidebend, Lumbar extension and ipsilateral sidebend

Lumbar spine muscles

For the lumbar spine, we will organize the muscles based on depth (superficial → deep) as well as location from midline (medial → lateral).

Palpation

Prone

  • vertebra
    • SPs
    • spacing
    • rotation
    • Depth

Citation

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