Glenohumeral arthritis includes osteoarthritis, rheumatoid arthritis, and post-traumatic arthritis has been treated successfully with total shoulder arthroplasty for many years. 1 -3 In 1974, Dr. Neer3 reported the first series of patients who were successfully treated with anatomically designed total shoulder prosthesis.
Arthritis affecting the shoulder includes osteoarthritis, rheumatoid arthritis, osteonecrosis, posttraumatic arthritis, cuff tear arthropathy, and post-capsulorrhaphy arthropathy. Primary osteoarthritis is the most common form and characterized as a slow progressing disease that leads to cartilage thinning and ultimately, complete cartilage loss resulting in bone on bone contact and pain. There are many risk factors for shoulder arthritis including age, sex, race, genetics, weight, trauma, dislocation, and history of previous surgery.
Glenohumeral instability is a common problem in the young, athletic patient population, with anterior instability being more common than posterior or multidirectional instability (MDI)66,72,225. The incidence of anterior glenohumeral instability in the United States population is 0.08 per 1,000 person-years175,256.