title: Analysis of the kinematics of total knee prostheses with a medial pivot design.
abstract: Analysis of the kinematics of the FINE Total Knee System (Nakashima Medical, Okayama, Japan) revealed that the medial condyle is fixed and the lateral condyle shows lateral posterior movement and tibial internal rotation. Analysis of the kinematics of the ADVANCE Total Knee System (Wright Medical Technology, Arlington, Tenn) revealed that the medial condyle is fixed and the lateral condyle shows anterior movement in the early stage, changing thereafter to posterior movement. With regard to rotation, initial external rotation subsequently changes to internal rotation. Analysis of the kinematics of the ADVANTIM Total Knee System (Wright Medical Technology) revealed that the bicondyle shows posterior movement, subsequently changing to anterior and posterior movements. Thus, unlike the FINE or ADVANCE Total Knee Systems, the ADVANTIM Total Knee System shows internal rotation.
authors.affiliation: Department of Orthopaedic Surgery, Toho University, Ota-ku, Tokyo, Japan.
authors.forename: Yoshiyasu
authors.initials: Y
authors.lastname: Miyazaki
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakamura
authors.forename: Katsunori
authors.initials: K
authors.lastname: Kogame
authors.forename: Muneki
authors.initials: M
authors.lastname: Saito
authors.forename: Keitaro
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Toru
authors.initials: T
authors.lastname: Suguro
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D001696:Biomechanical Phenomena; D005260:Female; D005269:Femur / Q000502:physiology; D006801:Humans; D007719:Knee Joint / Q000502:physiology*; D007720:Knee Prosthesis; D008875:Middle Aged; D011474:Prosthesis Design; D013977:Tibia / Q000502:physiology