title: Comparison between highly cross-linked and conventional polyethylene in total knee arthroplasty.
abstract: The use of highly cross-linked polyethylene in total knee prostheses is still controversial. The aim of the present study was to compare radiographic and clinical results of using conventional and highly cross-linked polyethylene in cruciate retaining total knee prostheses of completely the same design. Two hundred and two consecutive total knee arthroplasties (NexGen CR, Zimmer) were performed using the same procedure. The first consecutive 113 knees had conventional polyethylene insert and following consecutive 89 knees had highly cross-linked polyethylene insert (Prolong, Zimmer). Differences in the age, gender, and diagnosis between two groups were not statistically significant. Preoperative range of motion (ROM) of the knee, and Knee Society Score (KSS) was better in highly cross-linked polyethylene group. Clinical and radiographic results were evaluated at two years after operation. The difference of ROM and KSS between groups was not statistically significant. There was no revision surgery. No knee exhibited osteolysis, aseptic loosening, or polyethylene failure. There was no early catastrophic clinical failure due to use of the new material.
authors.affiliation: Department of Orthopaedic Surgery, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan. yminoda@msic.med.osaka-cu.ac.jp
authors.forename: Yukihide
authors.initials: Y
authors.lastname: Minoda
authors.forename: Masaharu
authors.initials: M
authors.lastname: Aihara
authors.forename: Akira
authors.initials: A
authors.lastname: Sakawa
authors.forename: Shinichi
authors.initials: S
authors.lastname: Fukuoka
authors.forename: Keiko
authors.initials: K
authors.lastname: Hayakawa
authors.forename: Masuhiro
authors.initials: M
authors.lastname: Tomita
authors.forename: Naoya
authors.initials: N
authors.lastname: Umeda
authors.forename: Kenji
authors.initials: K
authors.lastname: Ohzono
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D003432:Cross-Linking Reagents / Q000737:chemistry; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D020959:Polyethylene / Q000009:adverse effects / Q000737:chemistry; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular
chemical_list: D003432:Cross-Linking Reagents; D020959:Polyethylene