title: Optimizing range of motion in cruciate-retaining mobile-bearing tka: experience with 2000 cases.
abstract: We describe experience with 2000 cruciate-retaining Sigma RP total knee arthroplasties performed between September 2000 to January 2006. All procedures were performed with a midvastus arthrotomy, medioposterior release, and posterior condylar clean-out technique. This implant design uses a congruent polyethylene bearing to diminish contact stress while allowing rotation between the polyethylene bearing surface and tibial tray. Of the 2000 knees, 1596 had follow-up data at one year. Seven hundred-twenty-seven had an average flexion of 123 degrees, 692 had an average Knee Society Score of 94, and 672 had an average function score of 86.
authors.affiliation: Illinois Bone and Joint Institute, Morton Grove, IL, USA.
authors.forename: Wayne M
authors.initials: WM
authors.lastname: Goldstein
authors.forename: Alexander C
authors.initials: AC
authors.lastname: Gordon
authors.forename: Jill Jasperson
authors.initials: JJ
authors.lastname: Branson
mesh_terms: D000368:Aged; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D011474:Prosthesis Design; D016059:Range of Motion, Articular