| Rotatores muscle | |
|---|---|
| Latin | musculi rotatores |
| Gray's | subject #115 400 |
| Origin | transverse process |
| Insertion | junction of transverse process and lamina, spinous process |
| Artery | |
| Nerve | posterior branch |
| Actions | |
The Rotatores (Rotatores spinae) lie beneath the Multifidus and is present in all spinal regions but most prominent in the thoracic region; they are eleven in number on either side.
Each muscle is small and somewhat quadrilateral in form; it arises from the superior and posterior part of the transverse process, and is inserted into the lower border and lateral surface of the lamina of the vertebra above, the fibers extending as far as the root of the spinous process.
The first is found between the first and second thoracic vertebræ; the last, between the eleventh and twelfth. Sometimes the number of these muscles is diminished by the absence of one or more from the upper or lower end. The Rotatores muscles have a high density of proprioceptors and have been implicated in postural control.[1]
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.