According to arthritis.org, more than 50 million adults have doctor-diagnosed arthritis. That's 1 in 5 people over age 18.

Arthritis is a group of more than 100 different diseases. Arthritis may cause pain, stiffness, and swelling in the joints and can also cause pain in other body structures such as muscles, tendons, ligaments, and bones.

How does arthritis affect the hand, and how can therapy counter that?

Tim Burkhart, MS, OTR/L, MBA explains how hand therapy can help ease the pain, stiffness and range of motion caused by arthritis of the hands.