In hand OA, the joints most commonly affected by OA are the wrists, the joints at the base of the thumb, the middle finger joints and the joints closest to fingernails. In the finger joints, OA can ...

Most were found between 1975 and 2022. “Mosura fentoni was about the size of your index finger and had three eyes, spiny jointed claws, a circular mouth lined with teeth and a body with swimming ...