Treatment is focused on prevention to those individuals at risk who are involved in certain professions. Prevention includes changing the work station environment, education about body posture and positions during activities at work, use of ergonomic assisted tools, breaks during heavy repetitive tasks for stretching and to rest the extremities and limit fatigue that can instill a risk of error and progressively deteriorate body posture. From an anatomic approach, or goal is to make the space around the tendons bigger, or make the contents of the space smaller. Treatment always begins by breaking the vicious cycle of swelling and friction with ergonomic changes and education, splinting, and the use of acortisone injection between the tendon and its pulley, helping to shrink the size of the tendons and tendon lining in the tendon compartment. Anti-inflammatory medication often does not help resolve the symptoms of tendonitis and therefore although they are tried, often an injection is required. The maximum number of injections allowed in one year is three, preferably spaced no closer together than 6 months apart. Most patients have symptom resolution and return to their normal activities. A small number of patients fail a conservative nonoperative approach and require surgery involving a simple surgical release of the tight tendon compartment. This is done as an outpatient, often under local anesthesia, and always with a small incision. There are no formal restrictions after surgery. Patients return quickly to all their usual activities.