quadratus lumborum


Also found in: Acronyms.

quadratus lumborum

a muscle that connects the pelvis to the spine.

quadratus lumborum

An abdominal muscle located at the iliac crest, iliolumbar ligaments, transverse processes of lower lumbar vertebrae.

Action
Abduction of trunk.
 
Nerve
Ventral branches of upper lumbar spinal nerves.

Insertion
12th rib, transverse processes of upper lumbar vertebrae.
References in periodicals archive ?
18]F]-Fluorodeoxyglucose, GUh = glucose uptake heterogeneity, IO = internal oblique, LB Ext = low-back extensor group, MASS = Modified Ashworth spasticity scale, MS = multiple sclerosis, NARCOMS = North American Research Committee on Multiple Sclerosis, PDDS = Patient Determined Disease Steps, PET = positron emission tomography, QL = quadratus lumborum, RA = rectus abdominis, ROI = region of interest, SD = standard deviation, sEMG = surface electromyography, SUV = standardized uptake value, TA = transversus abdominis.
This lesson concentrated on the waist muscles, such as the internal and external obliques, and the quadratus lumborum.
And finally for testing the lateral trunk musculature, the side bridge exercise described by McGill was used to recruit quadratus lumborum and anterolateral trunk to recruit quadratus lumborum and anterolateral trunk wall muscles.
Quadratus lumborum is the larger muscle of note in this area, connecting the lower ribs to the top of the pelvis.
The psoas compartment is the space located between the psoas muscle and quadratus lumborum, and is surrounded by the psoas muscle and its fascia in the front, the lumbar, and the transverse process of the lumbar, ligament, muscle, and quadratus lumborum in the back8.
Various other trunk muscles, including the latissimus dorsi, quadratus lumborum, and the trapezius, also assist the erector spinae muscles in extending the trunk (Kendall et al.
This occurs because the quadratus lumborum [a muscle in the lower back used for stabilization] is inadvertently doing most of the pulling because their gluteal muscles are fatigued and shut off.
Quantitative intramuscular myoelectric activity of quadratus lumborum during a wide variety of tasks.
The following are deep muscles that play a key role in the support of the lumbar spine - Transversus Abdominis, Multifidus, Internal Oblique, Quadratus Lumborum and the Paraspinal Pelvic Floor.
This can be accomplished by hiking the contralateral hip by contracting the quadratus lumborum muscle.
The technique is made possible by the anatomic fact that as the lumbar plexus descends between the quadratus lumborum and the psoas major muscles, it is invested by a fascial sheath of the two muscles.
In other words, the practitioner finds a muscle that has a tender point in it close to a patient's symptom (upper trapezius trigger points may cause headaches and neck pain; the piriformis may cause sciatica; the quadratus lumborum for low back pain, etc.