Kneeling kinematics after total knee arthroplasty: anterior-posterior contact position of a standard and a high-flex tibial insert design.
Deep flexion activities including kneeling are desired by patients after total knee arthroplasty. This in vivo radiographic study sought to reveal the effect of tibial insert design on tibiofemoral kinematics during kneeling. One group of patients received standard posterior stabilized tibial inserts, whereas the other group received posterior stabilized tibial inserts (Flex inserts) that were designed to allow more flexion. The patients with the Flex inserts achieved greater range of motion without different tibiofemoral contact behavior.
Coughlin
Kathryn M
KM
Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont College of Medicine, Burlington, Vermont 05405, USA.
Incavo
Stephen J
SJ
Doohen
Robert R
RR
Gamada
Kazuyoshi
K
Banks
Scott
S
Beynnon
Bruce D
BD
D000368:Aged; D000704:Analysis of Variance; D019644:Arthroplasty, Replacement, Hip; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011187:Posture; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D013977:Tibia; D016896:Treatment Outcome