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.
Spondylosis is an aging phenomenon. With age, the bones and ligaments in the spine wear, leading to bone spurs (osteoarthritis). Also, the intervertebral discs degenerate and weaken, which can lead to disc herniation and bulging discs. Spondylosis is common. Symptoms are often first reported between the ages of 20 and 50. Over 80% of people over the age of 40 have evidence of spondylosis on X-ray studies.