erector spinae muscles


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e·rec·tor spi·nae mus·cles

, erector muscle of spine (ĕ-rek'tŏr spī'nē mŭs'ĕlz, mŭs'ĕl spīn)
Origin, from sacrum, ilium, and spines of lumbar vertebrae; it divides into three columns, iliocostalis muscle, longissimus muscle, and spinalis muscle, which insert into ribs and vertebrae with additional muscle slips joining the columns at successively higher levels; action, extends vertebral column; nerve supply, dorsal primary rami of spinal nerves.
Synonym(s): musculus erector spinae [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Description of data regarding neuromuscular activity in each article included, in relation to exercise type and normalized EMG activity (values expressed as mean and/or peak %MVIC) of upper and lower portions of gluteus maximus, gluteus medius, semitendinosus, biceps femoris, rectus femoris, vastus lateralis, vastus medialis and erector spinae muscles. Upper Lower Gluteus Reference Exercise Gluteus Gluteus Medius Maximus Maximus 29% mean 45% mean Contreras et Back Squat 85% peak 130% peak n/a al.
Did the patient also present with weakness of ante- and retro-flexion of the head or weakness of the erector spinae muscles? Occasionally, scoliosis may be caused by osteoporosis.[3] Was there any indication of impaired mineralization of the bones in the index case?
The lumbar region is bordered superiorly by the 12th rib inferiorly by the iliac crest, medially by the erector spinae muscles and laterally by the external oblique muscle.
The cross-sectional view of the transverse process was centered on the ultrasound screen and the overlying trapezius, and erector spinae muscles were identified.
The amount of intramuscular fat significantly increased in the lower lumbar segments for the multifidus and the erector spinae muscles compared with the upper lumbar segments.
With exception of the erector spinae muscles, the "Healthy" group showed the lowest mean muscle activity, although not significantly.
To reduce tension on iliopsoas bachward through erector spinae muscles causes muscle fatigueness.
Another important aspect refers to the fact that the postural attitude is not conditioned only by the muscle tone, the ligament strength and the erector spinae muscles, but also by the human being's personality, that is why it was called the "psychic drive".
Kyphotic deformity develops at the site of the spinal dysraphism as a result of the lateralised erector spinae muscles becoming perverted flexors of the spine.
Being careful to avoid the vertebrae, roll the ball up and down the erector spinae muscles that run along the sides of the spine while pressing into the wall at the same time.
(2,5,8) Golfers who have low back pain demonstrate earlier activation (before backswing commences) and less activity of the erector spinae muscles, as well as well as a delay to the onset time in the external obliques with the start of the back swing and a delay and decreased endurance capacity in transverses abdominus activation.
Back extension: Working the erector spinae muscles of the lower back.