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Determine the quadrant in which an angle, , lies if .
Psoas Minor
A small muscle located in the lower back that helps with flexion of the lumbar spine, though it is absent in a significant portion of the population.
Iliac Crest
The upper margin of the iliac bones, which forms the prominent part of the pelvic hip bone.
Lower Lumbar
Referring to the lower part of the lumbar region of the back, which includes the lower vertebrae of the spine.
Quadratus Lumborum
A muscle in the lower back that helps with the movement of the spine as well as stabilizes the pelvis.
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