Some forms of arthritis are caused by a reduction in the normal amount of this cartilage tissue. Osteoarthritis, one of the most common forms of arthritis, is caused by normal wear and tear throughout life; this natural breakdown of cartilage tissue can be exacerbated by an infection or injury to the joints.The risk of developing osteoarthritis may be higher if you have a family history of the disease.steoarthritis, one of the most common forms of arthritis, is caused by normal wear and tear throughout life; this natural breakdown of cartilage tissue can be exacerbated by an infection or injury to the joints. The risk of developing osteoarthritis may be higher if you have a family history of the disease.
Wait for the Best Deals. The best deals on summer airline tickets are historically offered approximately 3 1/2 months before a departure date, as airlines attempt to determine their demand for summer travel, reports Rick Seaney at Fare Compare.
A 2017 study by Expedia and the Airlines Reporting Corporation says there's a new optimal time to buy airline tickets. Travelers often swap theories on the rightâand wrongâtime to book a flight. We've heard it all: The lowest fares are on Tuesdays at 3 p.m. ET. (No, Wednesday at 1 a.m. is the best time to buy!) You need to book at least two months before you fly.