Influence of the initial foot contact strategy on knee joint moments during stair and ramp descent

Jeon, Hyeong Min; Choi, Eui-Bum; Heo, Jae-Hoon; Eom, Gwang-Moon

doi:10.1038/s41598-020-70933-y

Cited by 9 publications

(4 citation statements)

References 29 publications

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“…In this study, we only compared male patients. Since gait is generally known to show sex differences ( Jeon et al, 2017 ), further research on female participants and using stairs or slopes, where differences in biomechanical indices of gait become further prominent, must be conducted ( Jeon et al, 2020 ). Among conventional evaluations, we only used the FAC evaluation to split and compare groups.…”

Section: Discussionmentioning

confidence: 99%

Comparison of biomechanical parameters in lower limb joints of stroke patients according to conventional evaluation scores during level walking

Jeon,

Chung,

Bak

et al. 2024

Front. Bioeng. Biotechnol.

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Objective: Patients with chronic stroke capable of independent gait were classified into functional ambulation category (FAC) 4 or 5, and the kinetic and kinematic data on their lower limb joints on the affected and unaffected sides were compared with that of healthy individuals. Finally, the qualitative changes in the gait of patients with stroke were investigated based on the differences in FAC scores.Methods: Twelve healthy participants and 19 patients with stroke capable of independent gait were included. The three-dimensional (3D) motion analysis and conventional assessment were conducted for all patients with stroke.Results: The FAC 5 group exhibited a larger range of motion (ROM) than the FAC 4 group in knee and hip joints on the affected side and only in the hip on the unaffected side. In the FAC 5 group, ROM differences in the healthy group on either the affected or unaffected side were absent. The peak of the hip flexion moment on the affected side in both the FAC 4 and 5 groups was smaller than that in the healthy group and in the FAC 4 group on the unaffected side. The absorption power minimum on the affected side was smaller only in the FAC 4 group than that in the healthy group and was larger in the FAC 5 group than that in the FAC 4 group. On the unaffected side, the absorption power minimum was smaller only in the FAC 4 group than that in the healthy group.Conclusion: Functional differences in gait were found in patients classified based on conventional evaluation capable of independent gait after post-stroke rehabilitation. Patients may not exhibit complete recovery in the kinetic indices even if they are judged to be normal in the conventional evaluation, and the kinematic gait indices indicate recovery. Evaluating kinetic indices in addition to kinematic indices is necessary, and joint power may be an especially useful index.

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Section: Discussionmentioning

confidence: 99%

Comparison of biomechanical parameters in lower limb joints of stroke patients according to conventional evaluation scores during level walking

Jeon,

Chung,

Bak

et al. 2024

Front. Bioeng. Biotechnol.

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“…However, the cause of a significantly higher injury rate during descending motion in MMPRT type 4 as compared to another type of complete tear (type 2) remains unclear. Rearfoot landing in stairs or ramps while descending reportedly increased knee joint loads to a greater degree as compared to forefoot landing for patients with early knee OA [ 40 ], and further research of this phenomenon is required.…”

Section: Discussionmentioning

confidence: 99%

Epidemiological features of acute medial meniscus posterior root tears

Kamatsuki

Furumatsu

Hiranaka

et al. 2023

International Orthopaedics (SICOT)

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Purpose Untreated or overlooked medial meniscus posterior root tears (MMPRTs) induce sequential knee joint degradation. We evaluated epidemiological features of acute MMPRT for its early detection and accurate diagnosis. Methods Among 330 MMPRT patients from 2018 to 2020, those who underwent arthroscopic pullout repairs were enrolled. Patients who underwent non-operative treatment or knee arthroplasty, those with a cruciate ligament-deficient knee or advanced osteoarthritis of the knee, and those with insufficient data were excluded. Finally, we retrospectively evaluated data from 234 MMPRTs (female: 79.9%, complete tears: 92.7%, mean age: 65 years). Welch’s t-test and Chi-squared test were used for pairwise comparisons. Spearman’s rank correlation analysis was performed between age at surgery and body mass index (BMI). Multivariable logistic regression analysis with stepwise backward elimination was applied to the values as risk factors for painful popping events. Results In both sexes, there were significant differences in height, weight, and BMI. In all patients, there was a significant negative correlation between BMI and age (ρ = − 0.36, p < 0.001). The BMI cutoff value of 27.7 kg/m2 had a 79.2% sensitivity and a 76.9% specificity for detecting MMPRT patients aged < 50 years. A painful popping event was confirmed in 187 knees (79.9%), and the frequency was significantly reduced in partial tears as compared to complete tears (odds ratio: 0.080, p < 0.001). Conclusion Higher BMI was associated with a significantly younger age of MMPRT onset. Partial MMPRTs had a low frequency of painful popping events (43.8%).

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“…When considering the activities of daily living, walking up/downhill is inevitable. With the change in locomotor tasks and environmental demands, the body adjusts the gait strategy to keep balance and avoid falling while completing the inclination ( Jeon et al, 2020 ). Similarly, from the complex behavior’s hypothesis point of review, walking on different inclines extends the critical value in the first period-doubling routes to chaos, which are found in a passive walk of the compass-type bipedal robot model ( Added, Gritli & Belghith, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Different types of plantar vibration affect gait characteristics differently while walking on different inclines

Xie

Liang

Chien³

2023

PeerJ

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Background Plantar vibration has been widely used to strengthen the sensation of the somatosensory system, further enhancing balance during walking on a level surface in patients with stroke. However, previous studies with plantar vibration only involved the level surface, which neglected the importance of inclined/declined walking in daily life. Thus, combining the plantar vibration and inclined/declined walking might answer a critical research question: whether different types of plantar vibration had different effects on gait characteristics during walking on different inclines. Methods Eighteen healthy young adults were recruited. Fifteen walking conditions were assigned randomly to these healthy adults (no, sub-, and supra-threshold plantar vibration × five different inclines: +15%, +8%, 0%, −8%, −15% grade). A motion capture system with eight cameras captured 12 retro-reflective markers and measured the stride time, stride length, step width, and respective variabilities. Results A significant interaction between vibration and inclination was observed in the stride time (p < 0.0001) and step width (p = 0.015). Post hoc comparisons found that supra-threshold vibration significantly decreased the stride time (−8%: p < 0.001; −15%: p < 0.001) while the sub-threshold vibration significantly increased the step width (−8%: p = 0.036) in comparison with no plantar vibration. Conclusions When walking downhill, any perceivable (supra-threshold) vibration on the plantar area decreased the stride time. Also, the increase in step width was observed by non-perceivable (sub-threshold) plantar vibration while walking uphill. These observations were crucial as follows: (1) applying sub-threshold plantar vibrations during uphill walking could increase the base of support, and (2) for those who may need challenges in locomotor training, applying supra-threshold vibration during downhill walking could reach this specific training goal.

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Influence of the initial foot contact strategy on knee joint moments during stair and ramp descent

Cited by 9 publications

References 29 publications

Comparison of biomechanical parameters in lower limb joints of stroke patients according to conventional evaluation scores during level walking

Comparison of biomechanical parameters in lower limb joints of stroke patients according to conventional evaluation scores during level walking

Epidemiological features of acute medial meniscus posterior root tears

Different types of plantar vibration affect gait characteristics differently while walking on different inclines

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