Percentage of patients 18 years of age and older who obtained at least a 20% improvement in shoulder pain and/or function as measured by validated patient-reported outcome measures (PROMs) completed up to 90 days prior to and 9 to 15 months after undergoing primary total shoulder arthroplasty (TSA) surgery. PROMs include any validated measures of shoulder-related pain and/or function, such as PSS-Pain and PSS-Function.