title: Three-dimensional motion analysis and its application in total knee arthroplasty: what we know, and what we should analyze.
abstract: BACKGROUND
  This paper will review three-dimensional (3D) motion analysis studies done in my laboratory to present an overview of what we have found.
  
  
  METHODS
  We have looked at parameters such as roll-back, rotation, the pivot center of rotation etc. using a 2D-3D registration technique by evaluating knees before and after implantation of a total knee arthroplasty.
  
  
  CONCLUSIONS
  This technique allows comparison of preoperative motion to that after total knee surgery. We have found the phenomenon of "reverse screw-home" to be a common motion pattern in osteoarthritis and it is often present after implantation of a total knee prosthesis.
authors.affiliation: Department of Orthopaedic Surgery, Ninohji Onsen Hospital, 452 Toramaru, Shibata, Niigata, 957-0332, Japan, koga-y@ka2.so-net.ne.jp.
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Koga
mesh_terms: D053587:Arthrometry, Articular; D019645:Arthroplasty, Replacement, Knee; D001696:Biomechanical Phenomena; D006801:Humans; D021621:Imaging, Three-Dimensional; D007719:Knee Joint / Q000502:physiology* / Q000601:surgery*; D016059:Range of Motion, Articular; D012399:Rotation