Postal Exam 473 / 473E. Study Guide: Yes! This is the biggie â¦ the most popular Postal exam â¦ the one used to fill all over 90% of all Postal jobs, all entry-level Processing, Distribution, Delivery, and Retail positions. Listed below are the actual jobs filled from this exam: 1  PSE Sales, Service, and Distribution Associate.
Osteoarthritis, also known as degenerative arthritis degenerative joint disease, OA, or osteoarthrosis, is a form of arthritis caused by inflammation, breakdown, and the eventual loss of cartilage in the joints-the cartilage wears down over time.
When this happens, the back bones rub together and cause damage and pain. Osteoarthritis is caused by the normal wear and tear of the cartilage as you age. A fracture of the vertebrae, which can occur when a lot of force is put on the spine. This force can be from a car or bike accident or a direct blow to the spine.