Likely bony spur.
Bony spurs develop as one gets older, from wear and tear on joints, etc.
These are bony projections that form along joint margins. This can also happen in the neck and spinal column. Spurs can also appear on the feet, along toes, the heel, as well as on the hands. In extreme cases bone spurs
have grown along a person's entire skeletal structure. They're important since they can be near nerves.