Multifidus

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 and rotation of the spine

Innervation

• Dorsal rami of the spinal nerves

Daily uses

• Maintaining good posture of the spine

Example strengthening exercises

• Dorsal raises
  
  
• Back extension machine
  
  
• Back extension on a swiss ball

Example stretching exercises

• Back arch stretch
  
  
• Back slump stretch

Related injuries

• Lower back pain

Related muscles

• Erector spinae