1 At the ends of each of our chromosomes are sections of DNA called telomeres. 2  Telomeres protect the ends of the chromosomes during DNA replication by forming a cap, much like the plastic tip on a shoelace.
Osteoarthritis (OA) is the most common type of finger arthritis. OA is also called degenerative joint disease because it is caused by wear and tear on your joints as you age. In OA, the protective tissues in your joints deteriorate with time allowing bare bone to rub on bone. This cause joint pain and swelling.
Boutonniere deformity, also called buttonhole deformity, can happen due to rheumatoid arthritis. The middle finger joint will bend toward the palm while the outer finger joint may bend opposite the palm. It may be the result of chronic inflammation of the finger's middle joint. Treatment may include splinting to keep the middle joint extended.