The Fast-track Centre for Hip and Knee Replacement Database

This is a prospective study-registry on preoperative patient characteristics and postoperative complications in patients having fast-track hip and knee replacement surgery in 8 Danish dedicated arthroplasty departments from all five health regions in Denmark. The registry consists of detailed patient and physician reported preoperative characteristics and including prescribed medication and lab results. Follow-up is based on electronical medical records by dedicated nurses with physician backup and includes Clavien-Dindo and Comprehensive Complication Index scoring. All patients having day-surgery also completes a patient reported questionaire on health-care utilization and return to work by day 30. Finally, a machine-learning algorithm for identification of "high-risk" patients based on he preoperative data is included.