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.
Spondylolisthesis is a slipping of vertebra that occurs, in most cases, at the base of the spine. Spondylolysis, which is a defect or fracture of one or both wing-shaped parts of a vertebra, can result in vertebrae slipping backward, forward, or over a bone below.auses of Spondylolisthesis. There are many causes for spondylolisthesis. A vertebra might be defective from the time a person is born, or a vertebra may be broken by trauma or a stress fracture. In addition, vertebrae can be broken down by infection or disease.