1 Know what a set and an element are. 2  Write a mathematical statement with an equal sign or an inequality.  Identify what numbers belong to the set of natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.
Discogenic spondylosis, which is often thought of as a form of spinal osteoarthritis, refers to a degenerative condition that affects the joints of the spine.
Degenerative disc disease is a disease of aging, an age related disease. Over the years and decades, the repeated daily stresses on the spine and occasional minor, unnoticed injuries, as well as major ones, begin to take their toll.For most people the gradual degeneration of the discs is not a problem.However, in some cases it eventually causes severe, chronic and debilitating discogenic pain. Back specialists refer to pain caused by a damaged intervertebral disc as discogenic pain.egenerative disc disease refers to the degeneration of at least one of the intervertebral discs of the spinal column.