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J Phys Ther Sci. 2015 Jun;27(6):1803-7. doi: 10.1589/jpts.27.1803. Epub 2015 Jun 30.

Side-to-side differences of three-dimensional knee kinematics during walking by normal subjects.

Journal of physical therapy science

Takumi Ino, Yasumitsu Ohkoshi, Tatsunori Maeda, Kensaku Kawakami, Shoji Suzuki, Harukazu Tohyama

Affiliations

  1. Department of Rehabilitation, Hakodate Orthopedic Clinic, Japan ; Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University of Science, Japan.
  2. Department of Orthopedic Surgery, Hakodate Orthopedic Clinic, Japan.
  3. Department of Mechanical Engineering, Hakodate National College of Technology, Japan.
  4. Department of Media Architecture, Future University, Japan.
  5. Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University of Science, Japan.

PMID: 26180325 PMCID: PMC4499988 DOI: 10.1589/jpts.27.1803

Abstract

[Purpose] The purpose of this study was to determine the normal range of the side-to-side difference in three dimensional knee kinematics measured by the point cluster technique (PCT). [Subjects] The subjects were twenty-one healthy normal volunteers without knee pain or an episode of injury to the legs. [Methods] The subjects were tested bilaterally at a self-selected normal walking speed and six degrees of freedom knee kinematics were measured using the PCT, and the 95% confidence intervals of the average side-to-side differences in flexion-extension (FE), adduction-abduction (AA), internal-external (IE) rotation, and anterior-posterior (AP), medial-lateral (ML), superior-inferior (SI) translation in each stage of the gait cycle were determined. [Results] The average side-to-side differences and their 95% confidence intervals in rotation/translation in each stage of the gait cycle were determined. The side-to-side differences in AA rotation and AP translation of the tibia were significantly larger in the swing phase than in the stance phase. [Conclusion] The side-to-side differences in AA rotation and AP translation were highly dependent on the stage of the gait cycle. Therefore, the normal ranges of the side-to-side differences in knee kinematics in each stage of the gait cycle, in particular AA rotation and AP translation of the tibia, is useful information for evaluating knee kinematics during walking.

Keywords: Knee kinematics; Point cluster technique; Side-to-side difference

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