With OA, the cartilage concerning the finger joints wears down, and without the need of this cushion, the finger bones will start to rub versus one another. plural fingers Britannica Dictionary definition of FINGER one [count] : one of the 5 extensive parts of the hand which can be utilized https://marcolskbd.wikicarrier.com/728006/the_best_side_of_marmost_monkeys_for_sale_in_usa