Gait analysis system for assessment of dynamic loading axis of the knee

Hideo Kawakami, Nobuhiko Sugano, Kazuo Yonenobu, Hideki Yoshikawa, Takahiro Ochi, Asaki Hattori, Naoki Suzuki

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The purpose of this study was (1) to demonstrate a computer-assisted gait analysis system that can visualize the locus of the dynamic loading axis on the proximal tibia joint surface, and (2) to assess the accuracy of this system in a patient with bilateral knee osteoarthritis (OA). This system uses force plate data, CT skeletal structure data and motion capture data obtained from an infrared position sensor. The relative positions between bones and markers were used to calculate skeletal model movement based on movement of the markers. The locus of the dynamic loading axis on the knee joint was defined as the point on the proximal tibia joint surface that intersected with the loading axis of the lower limb, which passed through the centre of the femoral head and the centroid of multiple points surrounded by the distal tibia joint surface contour. To assess the accuracy of this system, open MRI was used to evaluate positions of skin markers against bones in six healthy volunteers. The locus in a patient was affected by differences between the varus knee with medial compartment OA on the non-operative side and the knee treated with high tibial osteotomy (HTO) on the opposite side. At knee flexion angles of 0°, 15° and 30°, the mean value of measurement error for point locations on the locus was within 5.6% of joint width in the lateral direction (JWLD) on the proximal tibia joint. This system can provide clinically useful information for evaluation of the dynamic loading axis on the knee joint surface.

Original languageEnglish
Pages (from-to)125-130
Number of pages6
JournalGait and Posture
Volume21
Issue number1
DOIs
Publication statusPublished - 2005 Jan
Externally publishedYes

Keywords

  • Gait analysis system
  • Knee OA
  • Locus of dynamic loading axis
  • Motion capture analysis
  • Open MRI

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Rehabilitation

Fingerprint Dive into the research topics of 'Gait analysis system for assessment of dynamic loading axis of the knee'. Together they form a unique fingerprint.

  • Cite this

    Kawakami, H., Sugano, N., Yonenobu, K., Yoshikawa, H., Ochi, T., Hattori, A., & Suzuki, N. (2005). Gait analysis system for assessment of dynamic loading axis of the knee. Gait and Posture, 21(1), 125-130. https://doi.org/10.1016/j.gaitpost.2004.01.002