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.
L5 â S1 spondylosis refers to spinal degeneration that has occurred at the last lumbar vertebrae. A painful sacroiliac joint (SI joint) is one of the more common causes of low back pain. The SI joint is a large joint in your lower back and buttocks region.5 â S1 spondylosis refers to spinal degeneration that has occurred at the last lumbar vertebrae. A painful sacroiliac joint (SI joint) is one of the more common causes of low back pain. The SI joint is a large joint in your lower back and buttocks region.