title: Condylar-stabilizing tibial inserts do not restore anteroposterior stability after total knee arthroplasty.
abstract: The Triathlon condylar-stabilizing (CS) lipped insert is designed to provide anteroposterior (AP) stability of the posterior-stabilized (PS) insert, without a post. The purpose of this study was to compare the AP stability of the knee in patients with Triathlon CS and PS total knee arthroplasty (TKA) with midterm follow-up. Thirty-one patients received a Triathlon PS TKA in one knee and a Triathlon CS TKA in the contralateral knee, and 28 patients were followed up with a minimum duration of 5years. Although there was no difference in functional outcomes, the posterior displacement was significantly greater in the CS TKA group than in the PS TKA group (P<0.001). The Triathlon CS lipped insert could not restore posterior stability with PCL sacrifice.
authors.affiliation: Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea.
authors.forename: Yoo-Joon
authors.initials: YJ
authors.lastname: Sur
authors.affiliation: Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea.
authors.forename: In-Jun
authors.initials: IJ
authors.lastname: Koh
authors.affiliation: Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea.
authors.forename: Se-Wook
authors.initials: SW
authors.lastname: Park
authors.affiliation: Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea.
authors.forename: Hyung-Jin
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea.
authors.forename: Yong
authors.initials: Y
authors.lastname: In
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D009068:Movement; D016119:Posterior Cruciate Ligament / Q000601:surgery*; D011446:Prospective Studies; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D013977:Tibia / Q000601:surgery*; D016896:Treatment Outcome
keywords: posterior cruciate ligament; range of motion; stability; tibial insert; total knee arthroplasty