Trunk (thorax, abdomen, back)

Iliocostalis Cervicis (Neck Part)

Musculus iliocostalis cervicis

Origin

Angle of the 3rd through 6th ribs

Insertion

Transverse processes of C4-C6

Function

Extension and, unilaterally, lateral flexion of the cervical spine

Innervation

Dorsal rami of the cervical spinal nerves

Movement & chain

Part of the lateral column of erector spinae; works together with iliocostalis thoracis in a continuous chain that stabilizes the spine during standing and lifting.

Palpation

Palpable in the posterolateral cervical spine and upper back medial to the rib angles.

Clinical

Part of the lateral column of erector spinae; postural fatigue leads to cervicothoracic pain and restricted lateral bending.

Segmental innervation

Dorsal rami of the cervical spinal nerves, segmental per level.

In clinical practice

Ergonomic patient repositioning (log-roll technique in spinal trauma) and pressure offloading; maintain neutral spinal alignment in bedridden patients.

Region in the model

Trunk (thorax, abdomen, back)