Three-dimensional knee kinematics in patients with discoid lateral meniscus during gait

Kengo Harato, Aiko Sakurai, Yutaka Kudo, Takeo Nagura, Ko Masumoto, Toshiro Otani, Yasuo Niki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Background: To date, the knee kinematics of discoid lateral meniscus (DLM) has not been elucidated. The aim was to investigate the three-dimensional knee kinematics in DLM using gait analysis. Methods: Ten patients (mean: 14. years) diagnosed with bilateral DLM and unilaterally symptomatic snapping as well as 10 healthy controls (mean: 23. years) participated in the study. Each patient with DLM had unilaterally snapping knee in full extension and deep flexion. The three-dimensional gait analysis was performed with the point cluster technique. All subjects were asked to walk on a level floor at the speed of their choice. In the sagittal plane, knee excursion was separately evaluated during the weight acceptance phase and the mid-stance phase. In the axial plane, knee excursion during the stance phase was assessed. Finally, knee excursion during the whole gait cycle was evaluated in the frontal plane. Statistical comparison was conducted between groups, and between both sides in the DLM group. Results: In the sagittal plane, knee excursions during the weight acceptance phase and the mid-stance phase were significantly smaller in the DLM group than in the control group; in addition, these were smaller on the symptomatic side than on the asymptomatic side in the DLM group. In the axial plane, knee excursion was also significantly smaller on the symptomatic side than on the asymptomatic side in the DLM group, whereas the frontal knee motion did not differ significantly. Conclusion: Less knee motion in the sagittal plane may prevent snapping during extension and flexion in patients with DLM. Level of Evidence: III.

Original languageEnglish
JournalKnee
DOIs
Publication statusAccepted/In press - 2015 Mar 19

Fingerprint

Tibial Meniscus
Gait
Biomechanical Phenomena
Knee
Weights and Measures

Keywords

  • Discoid lateral meniscus
  • Gait analysis
  • Knee kinematics
  • Stiffening strategy

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Three-dimensional knee kinematics in patients with discoid lateral meniscus during gait. / Harato, Kengo; Sakurai, Aiko; Kudo, Yutaka; Nagura, Takeo; Masumoto, Ko; Otani, Toshiro; Niki, Yasuo.

In: Knee, 19.03.2015.

Research output: Contribution to journalArticle

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AU - Sakurai, Aiko

AU - Kudo, Yutaka

AU - Nagura, Takeo

AU - Masumoto, Ko

AU - Otani, Toshiro

AU - Niki, Yasuo

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N2 - Background: To date, the knee kinematics of discoid lateral meniscus (DLM) has not been elucidated. The aim was to investigate the three-dimensional knee kinematics in DLM using gait analysis. Methods: Ten patients (mean: 14. years) diagnosed with bilateral DLM and unilaterally symptomatic snapping as well as 10 healthy controls (mean: 23. years) participated in the study. Each patient with DLM had unilaterally snapping knee in full extension and deep flexion. The three-dimensional gait analysis was performed with the point cluster technique. All subjects were asked to walk on a level floor at the speed of their choice. In the sagittal plane, knee excursion was separately evaluated during the weight acceptance phase and the mid-stance phase. In the axial plane, knee excursion during the stance phase was assessed. Finally, knee excursion during the whole gait cycle was evaluated in the frontal plane. Statistical comparison was conducted between groups, and between both sides in the DLM group. Results: In the sagittal plane, knee excursions during the weight acceptance phase and the mid-stance phase were significantly smaller in the DLM group than in the control group; in addition, these were smaller on the symptomatic side than on the asymptomatic side in the DLM group. In the axial plane, knee excursion was also significantly smaller on the symptomatic side than on the asymptomatic side in the DLM group, whereas the frontal knee motion did not differ significantly. Conclusion: Less knee motion in the sagittal plane may prevent snapping during extension and flexion in patients with DLM. Level of Evidence: III.

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