title: Early nontraumatic fracture of the polyethylene tibial post in a NexGen LPS-Flex posterior stabilized knee prosthesis.
abstract: Fracture of a polyethylene tibial post in a knee prosthesis after a total knee arthroplasty (TKA) is an uncommon but severe complication of polyethylene tibial post wear. A fractured tibial post results in an unstable and malfunctioning knee. Revision knee surgery is necessary to restore function of the affected knee. We report a case of a nontraumatic fracture of a tibial polyethylene post that occurred in a 63-year-old man with left-sided hemiparesis 3 years after he had undergone left TKA with a NexGen LPS-Flex total knee prosthesis. To our knowledge, this is the first report of a nontraumatic fracture to the tibial post with anterolateral to posterior breakage after a NexGen LPS-Flex TKA.
authors.affiliation: Department of Orthopedic Surgery, Lotung Poh-Ai Hospital, Yilan, Taiwan.
authors.forename: Chi-Sheng
authors.initials: CS
authors.lastname: Lee
authors.forename: Wei-Ming
authors.initials: WM
authors.lastname: Chen
authors.forename: Hung-Chan
authors.initials: HC
authors.lastname: Kou
authors.forename: Wai-Hee
authors.initials: WH
authors.lastname: Lo
authors.forename: Chien-Lung
authors.initials: CL
authors.lastname: Chen
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D006801:Humans; D007593:Joint Instability / Q000209:etiology / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D020370:Osteoarthritis, Knee / Q000601:surgery*; D011475:Prosthesis Failure; D012086:Reoperation