Tornier Blueprint Planning Software in Patients Receiving Reverse Shoulder Arthroplasty

Inclusion Criteria: 1. Skeletally mature, and age ≥ 18 years. 2. In the opinion of the treating surgeon, must already be a qualified candidate for reverse shoulder arthroplasty without the use of glenoid bone grafts. 3. Be likely to return for regular follow-ups until the end of the study period. 4. Be willing and able to provide Informed Consent for study participation. Exclusion Criteria: 1. Previous bony surgery on the operative shoulder. 2. Shoulder pain due to acute trauma. 3. Clinical, laboratory and/or radiological evidence of shoulder pain secondary to acute or chronic infection, malignancy, other space occupying lesions and metabolic bone demineralization diseases (e.g. osteomalacia, gout, Paget's disease etc.) 4. Any active malignancy, infectious process, or documented chronic autoimmune disease. 5. Any other concurrent medical disease or treatment that might impair normal healing process. 6. Recent history (within past 6 months) of any chemical or alcohol dependence. 7. Currently a prisoner. 8. Currently experiencing a major mental illness (psychosis, schizophrenia, major affective disorder) which may indicate that the symptoms are psychological rather than of physical origin. 9. Pregnant or planning to become pregnant within study duration.