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.
Cause of Foot Osteoarthritis. Osteoarthritis is a degenerative joint disease. Cartilage, which serves as a protective cover and cushion for the ends of the bones that form a joint, gradually wears down. This is due to mechanical wear-and-tear on the joints of the foot. Injury can also cause osteoarthritis to develop even years after the injury has occurred. Severe sprains or fractures can lead to osteoarthritis. Abnormal foot structure and, consequently, abnormal foot mechanics can also cause osteoarthritis to develop.