multifidus muscle


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mul·tif·i·dus mus·cle

(mŭl-tif'i-dŭs mŭs'ĕl)
Origin, from the sacrum, sacroiliac ligament, mammillary processes of the lumbar vertebrae, transverse processes of thoracic vertebrae, and articular processes of last four cervical vertebrae; insertion, into the spinous processes of all the vertebrae up to and including the axis; action, rotates vertebral column; nerve supply, dorsal primary rami of spinal nerves.
Synonym(s): musculus multifidus lumborum [TA] , musculus multifidus [TA] .
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References in periodicals archive ?
2001) Effects of three different training modalities on the cross sectional area of the lumbar multifidus muscle in patients with chronic low back pain.
While this action helps prevent entrapment of the capsule by the articular surfaces (and any resultant associated pain), this functionality may be impaired in the compromised multifidus muscle.
Studies comparing changes in lumbar multifidus muscle size with EMG activity need to investigate different contraction strategies in wider ranges of muscle contractions.
Embedded in areolar tissue the thoracic dorsal rami accompanied by arteries and veins passes over the dorsal aspect of the multifidus muscle covered by fibres of semispinalis (Chua & Bogduk 1995).
1993) observed that the multifidus muscle at the L5 level appeared to show the most consistent changes of the EMG power spectrum as a consequence of fatigue.
From superficial to deep these include the skin, subcutaneous tissue, the thoracolumbar fascia, the erector spinae aponeurosis, and the multifidus muscle (Bogduk 1997) (Figures 1 and 2).
3) Pezolato et al (4) found that the multifidus muscles demonstrated greater fatty infiltrate in subjects with swayback posture, with or without symptoms, in comparison to a control group.
After eight weeks, damage was seen to the lumbar multifidus muscles which hold vertebrae in place.
Fourth, although the stabilising treatment aims to alter motor control of the transversus abdominis and multifidus muscles, neither motor control changes nor their association with outcome were assessed.