1 Axial pain. 2  Also called mechanical pain, axial pain is the most common cause of back pain and may present in a number of different ways (sharp or dull, constant, comes and goes, etc.). 3  A muscle strain is a common cause of axial pain.ommon anatomical causes of back pain include: 1  The large nerve roots that go to the legs and arms may be irritated. 2  The smaller nerves that innervate the spine may be irritated. 3  The large paired back muscles (erector spinae) may be strained. 4  The bones, ligaments, or joints themselves may be injured.
Merge this question into. Split and merge into it. Answer by Puhlaa. Confidence votes 4.9K. The spinal cord enlarges at the cervical and lumbosacral areas in order to accomodate the extra neurons involved with the motor control going to, and sensations coming from, the upper and lower limbs.
Lumbar Spinal Fusion is the. placement of screws, rods and cages. to steady the spine. This is done. because the spine is unstable. because of an injury, or because the. spine needs to be fixed in place. because of pain. This surgery often includes the. removal of part of or all of the bone. that covers the back of the spinal column called the lamina. The lamina may be. causing tightness around the spinal cord or nerve(s). The surgery helps to. decrease the irritation or inflammation to that area. Any arthritic changes or. disc material pressing on the nerve root(s) may also be removed.