Multifidus
Anatomical Info
-
Position:
Anteroir -
Region:
Trunk -
Plane:
Frontal
Muscle Characteristics:
-
Movements:
Flexion, Extension, And Rotation -
Muscle Shape:
Parallel
Nerves:
Nerve
System
Spinal Plexus
Division
Trunk
Branch
Roots
Description
The multifidus is a group of small, deep muscles that run the length of the spine. They are located on the posterior (back) side of the spine, attached to the vertebrae and the sacrum.
The main function of the multifidus is to stabilize the spine and maintain its integrity during movement. The muscles work together to control and coordinate the movement of the vertebrae, allowing for smooth and controlled spinal movement.
These fasciculi arise:
- in the sacral region: from the back of the sacrum, as low as the fourth sacral foramen, from the aponeurosis of origin of the sacrospinalis, from the medial surface of the posterior superior iliac spine, and from the posterior sacroiliac ligaments.
- in the lumbar region: from all the mamillary processes.
- in the thoracic region: from all the transverse processes.
- in the cervical region: from the articular processes of the lower four vertebrae.
Each fasciculus, passing obliquely upward and medially, is inserted into the whole length of the spinous process of one of the vertebrae above.
These fasciculi vary in length: the most superficial, the longest, pass from one vertebra to the third or fourth above; those next in order run from one vertebra to the second or third above; while the deepest connect two adjacent vertebrae.
The multifidus lies deep relative to the spinal erectors, transverse abdominis, abdominal internal oblique muscle and abdominal external oblique muscle.
Targeted Muscle Exercises
Muscle Engaging Sports
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