With OA, the cartilage between the finger joints wears down, and without this cushion, the finger bones will start to rub against each other. That rubbing causes pain, stiffness, and inflammation.

The palm has 5 bones that connect with 14 finger bones. Let’s take a closer look. Carpal bones in the wrist. Your wrist is made up of eight small bones called the carpal bones, or the carpus.

The bones in your fingers are called phalanges. Each finger has three phalanges, except the thumb, which has two phalanges. A broken, or fractured, finger occurs when one or more of these bones ...

These muscles move your forearm by turning the bones inward (toward your body) and outward (away from your body). Extrinsic . These muscles help you bend and extend your fingers and thumb.