Multifidus

A group of deep spine muscles that play a vital role in stabilizing the vertebral column.

The multifidus is a series of small, elongated muscles located in the back, spanning along the spine from the sacrum to the cervical vertebrae. These muscles are part of the intrinsic muscles of the back, providing critical support and stability to the spinal column. They consist of multiple short bundles that originate from the sacrum and transverse processes of the vertebrae and insert into the spinous processes of higher vertebrae.

Terminologia Anatomica

multifidus

System

Musculoskeletal system

Function

The primary function of the multifidus muscles is to stabilize the vertebrae during movement and enable intricate and controlled motion of the spine. They allow for rotational and lateral movements while preventing excessive motion that could lead to injury. By working in conjunction with other muscle groups and spinal structures, the multifidus plays a significant role in maintaining proper posture and alignment, contributing to overall spinal health. Strengthening the multifidus can help in injury prevention and rehabilitation, particularly after back injuries or surgeries.

Location

Multifidus muscles are located deep within the back, lying adjacent to the vertebral column. They are situated beneath the more superficial back muscles and attach to individual vertebrae from the sacrum, moving upwards through the lumbar, thoracic, and cervical regions of the spine. Each multifidus muscle originates from the sacral region and the transverse processes of the vertebrae, extending across two or more vertebral segments before attaching to the spinous processes. This strategic positioning allows them to effectively stabilize the spine during various movements.

Did You Know?

The multifidus muscles are particularly important for maintaining spinal stability throughout daily activities.
Weakness in the multifidus has been associated with lower back pain and postural imbalances.
These muscles can help in enhancing athletic performance by stabilizing the core during dynamic movements.