Multifidus Muscle

Multifidus is a series of small muscles which travel up the length of the spine. It is an important muscle in the rehabilitation of Gilmore's Groin and lower back pain.

Origin : Posterior surface of the sacrum.
Articular processes of the lumbar vertebrae.
Transverse processes of the thoracic vertebrae.
Articular processes of C3-7.

Insertion : Each part of the muscle inserts into the spinous process 2-4 vertebrae higher than its origin.

Actions : Extension.
Lateral flexion.
Rotation of the spine.

Innervation : Dorsal rami of the spinal nerves.

Daily uses : Maintaining good posture of the spine.

Example strengthening exercises : Dorsal raises.

Example stretching exercises : Back arch stretch.