Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) EPINETTE JA,Outcomes of patella resurfacing versus nonresurfacing in total knee arthroplasty : a 9-year experience based on a case series of scorpio PS knees,J Knee Surg,,,2008,21,4,293-298,https://cir.nii.ac.jp/crid/1574231875773191808,