Lumbar rotator at a glance
- Also called
- Rotatores lumborum
- What it is
- Small deep muscles of the transversospinalis group in the lumbar spine (rotatores lumborum).
- Location
- Each runs from the transverse process of a lumbar vertebra to the spinous process of the vertebra above.
- Function
- Assist extension and rotation of the spine to the opposite side; mainly proprioceptive.
- Body system
- Muscular · paired (left and right)
- FMA ID
- FMA23089 (Foundational Model of Anatomy)
Key facts
- Innervation: posterior rami of lumbar spinal nerves
- Rotatores are the shortest and deepest transversospinalis muscles, spanning one or two segments; multifidus is the dominant deep muscle in the lumbar region.
Structures next to the lumbar rotator
The nearest named structures in the 3D model, measured from the centre of each part:
- Second lumbar vertebra · skeletal
- First lumbar vertebra · skeletal
- Lumbar vein · cardiovascular
- Third lumbar vertebra · skeletal
- Subcostal artery · cardiovascular
- Lumbar artery · cardiovascular
- Subcostal vein · cardiovascular
- Interspinales lumborum · muscular
- Twelfth rib · skeletal
- Posterior division of renal artery · cardiovascular
References
- Foundational Model of Anatomy: Lumbar rotator (FMA23089). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
- Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.
Related anatomy
Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.