@precisioncaremedical: How to relieve pain from arthritis? Trigger finger injections are used when a finger catches, locks, or gets stuck during movement. The problem usually comes from inflammation around the tendon, not the joint itself. By reducing swelling in the tendon sheath, the injection allows the tendon to glide smoothly again, helping the finger bend and straighten without locking. #painrelief #arthritis #kneepain