Most commonly in the hand, Osteoarthritis of the thumb and finger joints and Rheumatoid Arthritis of the wrist and knuckles are addressed in therapy to reduce pain and stiffness.  Patients are educated on protecting their joints to reduce deterioration by modifying activities and using adaptive devices to help with daily activities.  Your hand therapist may make you a protective orthosis, or hand splint to stabilize sore joints or to reduce joint deformities.  Joint replacements of the thumb and fingers: At times, if arthritic joints have deteriorated to the degree that surgery is needed, your hand therapist would provide a post-surgical rehabilitation program to ensure your new joint is functional.