Kinematic analysis of knee varus and rotation movements at the initial stance phase with severe osteoarthritis of the knee

Fukaya, Takashi; Mutsuzaki, Hirotaka; Wadano, Yasuyoshi

doi:10.1016/j.knee.2015.02.012

Cited by 19 publications

(11 citation statements)

References 25 publications

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“…Kinematic and kinetic data were filtered using a fourth-order low-pass Butterworth filter with a cutoff frequency of 10 and 20 Hz, respectively. Using spline interpolation, all data were normalized to the stance phase with heel contact to toe-off corresponding to 100% [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

A comparison of running kinetics in children with and without genu varus: A cross sectional study

et al. 2017

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IntroductionVarus knee alignment has been identified as a risk factor for the progression of medial knee osteoarthritis. However, the underlying mechanisms have not been elucidated yet in children. Thus, the aims of the present study were to examine differences in ground reaction forces, loading rate, impulses, and free moment values during running in children with and without genu varus.MethodsThirty-six boys aged 9–14 volunteered to participate in this study. They were divided in two age-matched groups (genu varus versus healthy controls). Body weight adjusted three dimensional kinetic data (Fx, Fy, Fz) were collected during running at preferred speed using two Kistler force plates for the dominant and non-dominant limb.ResultsIndividuals with knee genu varus produced significantly higher (p = .01; d = 1.09; 95%) body weight adjusted ground reaction forces in the lateral direction (Fx) of the dominant limb compared to controls. On the non-dominant limb, genu varus patients showed significantly higher body weight adjusted ground reaction forces values in the lateral (p = .01; d = 1.08; 86%) and medial (p < .001; d = 1.55; 102%) directions (Fx). Further, genu varus patients demonstrated 55% and 36% greater body weight adjusted loading rates in the dominant (p < .001; d = 2.09) and non-dominant (p < .001; d = 1.02) leg, respectively. No significant between-group differences were observed for adjusted free moment values (p>.05).DiscussionHigher mediolateral ground reaction forces and vertical loading rate amplitudes in boys with genu varus during running at preferred running speed may accelerate the development of progressive joint degeneration in terms of the age at knee osteoarthritis onset. Therefore, practitioners and therapists are advised to conduct balance and strength training programs to improve lower limb alignment and mediolateral control during dynamic movements.

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Section: Methodsmentioning

confidence: 99%

A comparison of running kinetics in children with and without genu varus: A cross sectional study

et al. 2017

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“…The experiment was performed using methods similar to those reported in a previous study [16]. Reflective markers of 9.5-mm diameter were placed directly over the following anatomical landmarks: the bilateral anterior and posterior superior iliac spines, bilateral greater trochanter, lateral and medial femoral epicondyles, lateral and medial tibial condyles, lateral and medial malleoli, calcaneus, and the top of the foot at the base of the second metatarsal.…”

Section: Methodsmentioning

confidence: 99%

Relationships between the center of pressure and the movements of the ankle and knee joints during the stance phase in patients with severe medial knee osteoarthritis

et al. 2016

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“…The current gold standard for gait analysis is a multiple camera-based motion capture system combined with ground reaction force plates. [4][5][6] Previous gait research has shown that a quantifiable varus thrust was associated with increases in both the peak knee varus angle and the peak varus angular velocity in the early stance phase. [5][6][7] These previous studies had the advantage of being able to precisely quantify the extent of varus thrust.…”

Section: Introductionmentioning

confidence: 99%

Diagnostic Accuracy of the Mobile Assessment of Varus Thrust Using Nine-axis Inertial Measurement Units

Tsukamoto

Saito

Matsunaga

et al. 2021

PRM

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Objectives: The purpose of this study was to clarify the diagnostic accuracy of the mobile assessment of varus thrust using inertial measurement units (IMUs). Methods: A total of 80 knees in 49 patients were enrolled in this study. On visual analysis of gait to determine the presence or absence of varus thrust, 23 knees were assigned to the Present group, 17 to the Ambiguous group, and 40 to the Absent group. The peak knee varus angular velocities (PVVs), measured by quantitative gait analysis using nine-axis IMUs, were compared between these three groups. A receiver operating characteristic curve for the relationship between the visual assessment of varus thrust (Present and Ambiguous) and the measured PVV was created, and the cut-off PVV for visualized varus thrust was determined as the highest point for both sensitivity and specificity. Results: The mean PVVs were significantly different between the three groups (Present, 47.7 ± 8.2 degree/s, Ambiguous, 34.1 ± 10.5 degree/s, and Absent, 28.1 ± 8.3 degree/s, respectively, ANOVA P=0.000). The PVV cut-off value for visualized varus thrust was 28.1 degree/s, yielding a sensitivity of 0.957 and a specificity of 0.579. Conclusions: A PVV <28.1 degree/s is useful for ruling out varus thrust during gait. This quantitative varus thrust assessment method using IMUs has clinical utility as a screening test.

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Kinematic analysis of knee varus and rotation movements at the initial stance phase with severe osteoarthritis of the knee

Cited by 19 publications

References 25 publications

A comparison of running kinetics in children with and without genu varus: A cross sectional study

A comparison of running kinetics in children with and without genu varus: A cross sectional study

Relationships between the center of pressure and the movements of the ankle and knee joints during the stance phase in patients with severe medial knee osteoarthritis

Diagnostic Accuracy of the Mobile Assessment of Varus Thrust Using Nine-axis Inertial Measurement Units

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