Transversospinales

Transversospinales is a group of muscles located in the human back. They are part of the deeper layer of intrinsic muscles of the back, which are responsible for maintaining posture and movement of the vertebral column. The Transversospinales group consists of three muscles: the Semispinalis, the Multifidus, and the Rotatores.

Anatomy

The Transversospinales muscles originate from the transverse processes of the vertebrae and insert into the spinous processes of the vertebrae above. They are arranged in a diagonal pattern, running from the lower right to the upper left, and vice versa. This arrangement allows them to perform their primary function, which is to rotate the spine.

Semispinalis

The Semispinalis is the most superficial of the Transversospinales muscles. It is divided into three parts: the Semispinalis Capitis, the Semispinalis Cervicis, and the Semispinalis Thoracis.

Multifidus

The Multifidus muscle is located deep to the Semispinalis. It is a powerful muscle that helps to stabilize the joints of the spine.

Rotatores

The Rotatores are the deepest and shortest muscles of the Transversospinales group. They are best developed in the thoracic region and are responsible for the rotation and stabilization of the vertebral column.

Function

The primary function of the Transversospinales muscles is to assist in the rotation of the spine. They also contribute to the extension and lateral flexion of the vertebral column. These muscles play a crucial role in maintaining posture and balance.

Clinical significance

Dysfunction or injury to the Transversospinales muscles can lead to back pain and mobility issues. Physical therapy and exercises that strengthen these muscles can help alleviate symptoms and improve spinal stability.

See also

• Erector spinae
• Deep muscles of the back
• Spinal muscles

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