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The quadratus lumborum muscles are located on both sides of the lower back, connecting the pelvis to the lower spine. They assist in bending to the side, rotating the trunk and stabilizing the ...
Muscles from the mid to upper back, like the lats, erector spinae, and quadratus lumborum stretch all the way down to the low back. Injury in muscles from the back of the legs, like the gluteals ...
The erector spinae (/ ɪ ˈ r ɛ k t ər ˈ s p aɪ n i / irr-EK-tər SPY-nee) [1] or spinal erectors is a set of muscles that straighten and rotate the back.The spinal erectors work together with the glutes (gluteus maximus, gluteus medius and gluteus minimus) to maintain stable posture standing or sitting.
Isolation exercise: ... Once you feel a modest stretch in your quads, pull body back up into tall kneeling position. ... Muscles worked: Core (rectus abdominis, quadratus lumborum), hip flexors ...
The thoracolumbar fascia (lumbodorsal fascia or thoracodorsal fascia) is a complex, [1]: 1137 multilayer arrangement of fascial and aponeurotic layers forming a separation between the paraspinal muscles on one side, and the muscles of the posterior abdominal wall (quadratus lumborum, and psoas major [1]: 1137 ) on the other.
The posterior layer and middle layer unite at the lateral margin of erector spinae, forming a though raphe; all three layers then unite at the lateral margin of quadratus lumborum, thus forming the aponeurotic origin of the transversus abdominis muscle. [2]: 814–815
passively stretching the hip flexors and lower back (sacrospinalis) muscles. Williams said: "The exercises outlined will accomplish a proper balance between the flexor and the extensor groups of postural muscles...". [4] [5] [6] Williams suggested that a posterior pelvic-tilt position was necessary to obtain best results. [7]
The superior lumbar (Grynfeltt-Lesshaft) triangle is formed medially by the quadratus lumborum, laterally by the posterior border of internal abdominal oblique muscle, and superiorly by the 12th rib. The floor of the superior lumbar triangle is the transversalis fascia and its roof is the external abdominal oblique muscle.