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.
Osteoarthritis can be limited to one joint or start in one joint usually the knee, hip, hand, foot or spine or it can involve a number of joints. If the hand is affected, usually many joints of the fingers become arthritic. Osteoarthritis probably does not have a single cause, and, for most people, no cause can be identified. Age is a leading risk factor, because osteoarthritis usually occurs as people get older. However, research suggests that joints do not always deteriorate as people age. Other factors seem to contribute to osteoarthritis.