Which nerves supply the rotatores muscles?

The rotatores muscles are small deep back muscles that are primarily involved in the rotation and stabilization of the vertebral column. They are located between the transverse processes and the spinous processes of the vertebrae, with their attachment points spanning one to two vertebrae. The innervation of these muscles comes from the dorsal rami of spinal nerves, which are the branches of the spinal nerves that supply the muscles, skin, and other tissues of the back.

Dorsal rami specifically provide motor innervation to the deep muscles of the back, including the rotatores. This is significant because the ventral rami primarily supply muscles of the limbs and anterior trunk, while intercostal nerves primarily serve the muscles and skin of the thoracic region between the ribs. The cervical plexus mainly innervates the neck area and does not contribute to the innervation of the rotatores.

Understanding the source of innervation for the rotatores is essential, as it highlights the specific role of the dorsal rami in supporting the musculoskeletal function in the back, and helps in recognizing the anatomical and functional significance of these nerves in spinal mechanics.