1. American Joint Replacement Registry - annual report 2016,2017
2. Endoprothesenregister Deutschland - Jahresbericht 2016,2017
3. Gesundheitsreport 2013: Knie- und Hüft- (Total-) Endoprothesen 2008-2012,2013
4. Swedish Knee Arthroplasty Register - annual report 2017,2017
5. Projections of primary and revision hip and knee arthroplasty in the United States from 2005 to 2030;Kurtz;J Bone Joint Surg Am,2007