The rotares a group of muscles within the transversospinales muscle group. The transversospinales are a group of deep muscles within the back which lie deep to the erector spinae. There are three major muscle subgroups within the transversospinales: semispinalis, multifidus and rotares.
The rotares are the deepest set of muscles within the transversospinales group.
Origin
- rotares lumborum: mamillary processes of lumbar vertebrae
- rotares thoracis: transverse processes of thoracic vertebrae
- rotares cervicis: articular processes of cervical vertebrae
Insertion
- spinous processes of lumbar, thoracic and cervical vertebrae
Action
- Weak extensors of the spine
- Proprioceptive function
Innervation
- Dorsal rami of cervical, and thoracic spinal nerves