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Three-dimensional kinematics and kinetics of total knee arthroplasty during level walking using single plane video-fluoroscopy and force plates: A pilot study.

M . Zihlmann, H . Gerber, A . Stacoff, K . Burckhardt, G . Székely, and E . Stüssi
Gait & Posture
Vol. 24, No. 4, pp. 475-481, December 2006

Abstract

The goal of the study was to simultaneously obtain accurate kinematic and kinetic data from a total knee arthroplasty (TKA) during level walking, by coupling force plate data with the kinematics of TKA measured by a movable video-fluoroscopic system. Kinematic and kinetic information of a TKA is crucial for the improvement of implant designs and for the increased longevity of the implant components. Instrumented gait analysis, with skin mounted marker tracking and force plates, is a well-established method for the acquisition of kinematic and kinetic data of TKA in vivo and for non-invasive estimation of joint function. However, resultant moments at the knee joint are inaccurate with this method, due to skin movement artifacts. Video-fluoroscopy reduces these inaccuracies by means of the direct tracking of the implant components with X-ray. However this measuring technique carries disadvantages: it provides only kinematic data, and the image intensifier covers a limited field of view. This paper presents a newly developed measuring technique, which enables a more accurate resultant moments calculation for level walking than could be achieved by conventional instrumented gait analysis.


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@Article{eth_biwi_00562,
  author = {M . Zihlmann and H . Gerber and A . Stacoff and K . Burckhardt and G . Székely and and E . St\"ussi},
  title = {Three-dimensional kinematics and kinetics of total knee arthroplasty during level walking using single plane video-fluoroscopy and force plates: A pilot study.},
  journal = {Gait & Posture},
  year = {2006},
  month = {December},
  pages = {475-481},
  volume = {24},
  number = {4},
  keywords = {Movable video-fluoroscopy; Level walking; Kinematics and kinetics; Total knee arthroplasty; Force plate data}
}