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The Journal of Bone and Joint Surgery (American). 2004;86:56-61
© 2004 The Journal of Bone and Joint Surgery, Inc.

In Vivo Assessment of the Kinematics in Normal and Anterior Cruciate Ligament-Deficient Knees

Mohamed R. Mahfouz, PhD, Richard D. Komistek, PhD, Douglas A. Dennis, MD and William A. Hoff, PhD

Corresponding author: Mohamed R. Mahfouz, PhD
University of Tennessee, 213 Perkins Hall, Knoxville, TN 37996. E-mail
address: mmahfouz@cmb.utk.edu

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   Introduction
 
The in vivo measurement of dynamic knee kinematics is important for understanding the effects of joint injuries and diseases and for evaluating the outcome of surgical procedures. Researchers have used in vitro approaches (involving cadavers), noninvasive approaches (involving studies done at gait laboratories), and in vivo approaches (involving roentgen stereophotogrammetry and fluoroscopy) to assess human knee motion. To ensure that the loads that are encountered during typical movements are accurately incorporated, treatments that are aimed at improving knee function should be evaluated with use of data that are obtained with dynamic measurement methods. This requires that the six-degrees-of-freedom pose (position and orientation) of objects be measured during dynamic activities. The purpose of the current study was to accurately determine the three-dimensional kinematic patterns of normal and anterior cruciate ligament-deficient knees during in vivo weight-bearing activities with use of a novel intensity-based two-dimensional to three-dimensional image registration method, similar to that . . . [Full Text of this Article]


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