title: The design principles of the Natural-Knee system.
abstract: The clinically successful Natural-Knee system was introduced 25 years ago. More than 1 million patients have been treated with this design since the first implantation in October 1985. This article reviews the design principles and evolution, over 25 years of clinical performance, of this cementless and cemented system, in which measured resection techniques are used to anatomically resurface the knee joint.
authors.affiliation: University of Utah Orthopaedic Center, Salt Lake City, UT 84108, USA. aaron.hofmann@hsc.utah.edu
authors.forename: Aaron A
authors.initials: AA
authors.lastname: Hofmann
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D001843:Bone Cements; D002484:Cementation; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D007720:Knee Prosthesis; D016348:Osseointegration; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D013499:Surface Properties; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements