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The Rotatores group is a member of the Transversospinalis (Paraspinal*) group, composed of:
The Rotatores are located in the lumbar, thoracic, and cervical regions.
- Transverse processes below to spinous processes above.
- From sacrum to the axis (C2).
- They attach 1-2 vertebral levels above the inferior attachment.
- Contralaterally rotate the neck and trunk at the spinal joints.
- Extend the neck and trunk at the spinal joints.
- Laterally flex the neck and trunk at the spinal joints.
- Transversospinalis musculature generally runs from transverse processes inferiorly (transverso) to spinous processes superiorly (spinalis).
- Rotatores musculature attaches from the transverse process of a vertebra below to the spinous process of a vertebra 1-2 levels above (1 level: brevis; 2 levels: longus).
- Actually the superior attachments are onto laminae (not spinous processes).
- The rotatores are the most horizontally-oriented muscles of the transversospinalis group. Therefore, it makes sense that they would primarily act to rotate the spine in the horizontal (transverse) plane: hence the name rotatores.