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.
The underlying cause of the condition is compression of the long tracts in the spinal cord. The normal diameter of the cervical spinal canal is between 17 mm and 18 mm. When this diameter falls below 12 mm to 14 mm for any reason this is likely to cause stenosis and myelopathic symptoms. The average diameter of the spinal cord in the cervical spine is 10 mm. Disc Herniation.