Trunk (thorax, abdomen, back)

Rotatores Longi

Musculi rotatores longi

Origin

Transverse process of a vertebra

Insertion

Lamina of the vertebra two segments above

Function

Segmental rotation and stabilization of the spine over a greater range than the short rotatores

Innervation

Dorsal rami of the spinal nerves at that level

Movement & chain

Works together with the short rotatores and the other transversospinal muscles in segmental rotation and stabilization of the spine.

Palpation

Crosses two vertebral levels in the deepest paraspinal gutter; not distinguishable from short rotators on palpation.

Clinical

Assist contralateral spinal rotation and provide continuous postural tuning; involved in segmental spine stiffness.

Segmental innervation

Dorsal rami T1-T12

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)