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Yu JS, Oh JS. Greater trochanter location measurement using a three-dimensional motion capture system during prone hip extension. J Phys Ther Sci. 2017;29(2):250-254doi: 10.1589/jpts.29.250.
Yu, J. S., & Oh, J. S. (2017). Greater trochanter location measurement using a three-dimensional motion capture system during prone hip extension. Journal of physical therapy science, 29(2), 250-254. https://doi.org/10.1589/jpts.29.250
Yu, Ji-Su, and Oh, Jae-Seop. "Greater trochanter location measurement using a three-dimensional motion capture system during prone hip extension." Journal of physical therapy science vol. 29,2 (2017): 250-254. doi: https://doi.org/10.1589/jpts.29.250
Yu JS, Oh JS. Greater trochanter location measurement using a three-dimensional motion capture system during prone hip extension. J Phys Ther Sci. 2017 Feb;29(2):250-254. doi: 10.1589/jpts.29.250. Epub 2017 Feb 24. PMID: 28265151; PMCID: PMC5332982.
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J Phys Ther Sci. 2017 Feb;29(2):250-254. doi: 10.1589/jpts.29.250. Epub 2017 Feb 24.

Greater trochanter location measurement using a three-dimensional motion capture system during prone hip extension.

Journal of physical therapy science

Ji-Su Yu, Jae-Seop Oh

Affiliations

  1. Department of Physical Therapy, Graduate School, Inje University, Republic of Korea; Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea.
  2. Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea.

PMID: 28265151 PMCID: PMC5332982 DOI: 10.1589/jpts.29.250

Abstract

[Purpose] The greater trochanter (GT) is an important structure in biomedical research, but the measurement methods require development. This study presents data from a new measurement method that does not use GT-marker-based measurement (No GT-m) in comparison with GT-marker based measurement (GT-m). [Subjects and Methods] We recruited 20 healthy subjects, who were asked to perform and maintain a prone position and then move to the prone hip extension. A motion capture system collected the kinematic data and the location of the GT was calculated by two measurements. [Results] GT migration distance differed significantly between the two measurements and the coefficient of the variation value was lower for the No GT-m method. Thigh lengths of the No GT-m method were comparable to the original lengths. There were significant differences between the GT-m and the other methods. [Conclusions] These data suggest that the GT-m method yielded a lower precision with a smaller GT migration distance. In the comparison of thigh length, the No GT-m method was in close agreement with the original length. We suggest that determining the location of the GT using the No GT-m has greater accuracy than the GT-m method.

Keywords: Greater trochanter measurement; Motion capture system; Prone hip extension

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