Unsatisfactory outcomes of primary shoulder arthroplasty -- Mayo Clinic registry experience with shoulder arthroplasty -- Failures of the reverse prosthesis : identifying the problems -- Clinical assessment of failed shoulder arthroplasty -- Medical evaluation and treatment for infection in shoulder arthroplasty -- Outcomes of revision surgery in shoulder arthroplasty -- Surgical exposures -- Understanding the implants -- Component fixation -- Morphology of the arthritic glenoid -- Revision of the glenoid component -- Muscle contributions to shoulder stability -- Managing the shoulder capsule/rotator cuff contractures and deficiencies -- Arthroscopic applications in revision shoulder arthroplasty -- Revision of failed reverse type implants -- Postoperative rehabilitation -- Reconjstructive techniques used at the Mayo Clinic in revision shoulder arthroplasty -- Periprosthetic humeral fractures -- Instability after shoulder arthroplasty -- Surgical management of the infected shoulder arthroplasty -- Failed hemiarthroplasty -- The reverse prosthesis for failed anatomic shoulder arthroplasty -- Prosthetic arthroplasty for delayed complications of proximal humerus fractures -- Prosthetic replacement for nonunions of proximal humerus fractures -- Prosthesic arthroplasty for arthritis after surgery for shoulder instability -- Prosthetic arthroplasty for locked shoulder dislocations -- Prosthetic arthroplasty in shoulder dysplasia -- Prosthetic arthroplasty in neuromuscular disorders.