The Michigan Arthroplasty Registry Collaborative Quality Initiative (MARCQI) is a group of Orthopeadic surgeons and medical professionals dedicated to improving the quality of care for patients undergoing hip and knee replacement procedures in Michigan. It is a Blue Cross Blue Shield of Michigan-funded Collaborative Quality Initiative (CQI). The Clinical Data Abstractor (CDA) is responsible for collecting, analyzing and reporting clinical data elements on eligible cases as well as, participate in project training sessions, attend the MARCQI collaborative meetings (3 times a year), and maintain regular contact (email, phone, conference calls, webinars, etc.) with the clinical champion and coordinating center. By collecting data, analyzing data, and reporting data back to the providers, quality improvement initiatives based on the registry data are implemented.