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  2. A Physical Therapist Shares 6 Stretches to Ease Lower ... - AOL

    www.aol.com/6-simple-moves-ease-lower-141800172.html

    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 ...

  3. Lumbar fascia - Wikipedia

    en.wikipedia.org/wiki/Lumbar_fascia

    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

  4. Lumbar triangle - Wikipedia

    en.wikipedia.org/wiki/Lumbar_triangle

    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.

  5. Thoracolumbar fascia - Wikipedia

    en.wikipedia.org/wiki/Thoracolumbar_fascia

    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.

  6. Quadratus lumborum muscle - Wikipedia

    en.wikipedia.org/wiki/Quadratus_lumborum_muscle

    The quadratus lumborum muscle originates by aponeurotic fibers into the iliolumbar ligament and the internal lip of the iliac crest for about 5 centimetres (2.0 in). It inserts from the lower border of the last rib for about half its length and by four small tendons from the apices of the transverse processes of the upper four lumbar vertebrae.

  7. Lateral arcuate ligament - Wikipedia

    en.wikipedia.org/wiki/Lateral_arcuate_ligament

    The lateral arcuate ligament is commonly described in anatomy textbooks as attaching at the first lumbar vertebra (L1). [2] However, other instances have been found in cadaver studies with attachments at either the second (L2) or third (L3) lumbar vertebra.

  8. Muscles of respiration - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_respiration

    Apart from the above neck muscles, the following muscles have also been observed contributing to respiration: serratus anterior, pectoralis major and pectoralis minor, trapezius, latissimus dorsi, erector spinae, iliocostalis, quadratus lumborum, serratus posterior superior, serratus posterior inferior, levatores costarum, transversus thoracis ...

  9. Ilioinguinal nerve - Wikipedia

    en.wikipedia.org/wiki/Ilioinguinal_nerve

    The ilioinguinal nerve is a branch of the first lumbar nerve (L1). It separates from the first lumbar nerve along with the larger iliohypogastric nerve.It emerges from the lateral border of the psoas major just inferior to the iliohypogastric, and passes obliquely across the quadratus lumborum and iliacus.