The lumbar rotatores are the deepest lumbar paraspinals with the highest muscle spindle density, functioning primarily as proprioceptive transducers rather than prime movers.
| Origin | Transverse processes of L1-L5 |
|---|---|
| Insertion | Spinous process one or two levels above |
| Nerve Supply | Dorsal rami of lumbar spinal nerves |
| Blood Supply | Segmental lumbar arteries |
| Actions |
|
|---|
They provide fine segmental control and position sense in the lumbar spine, with a small contribution to rotation and extension.
Their denervation from dorsal rami injury impairs vertebral proprioception and increases injury risk. Preservation during minimally invasive lumbar surgery is a key advantage over open approaches.
Not directly palpable, assessed by deep paraspinal EMG.
Deep lumbar rotator denervation contributing to vertebral proprioceptive deficit and lumbar instability.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
