Biomechanics performance in 30-s chair stand test in patients with medial knee osteoarthritis

Ferreira, Vitor; Machado, Leandro; Vilaça, Adélio; Leite, Francisco Xará; Roriz, Paulo

doi:10.1504/ijhfe.2019.105359

Cited by 8 publications

(4 citation statements)

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“…It should be noted that in this paper, we focus on the knee joint, and the central tasks (among four tested tasks) are sit-to-stand and walking. This choice of sit-to-stand is supported by previous works, which have shown such a task is a useful test of the health of the lower extremity [14], [15] when knee extension plays an important role [16], [17]. Due to the essential nature of these tasks in everyday life, metrics relating to sit-to-stand and walking are analyzed in clinical settings [18], [19], [20] and hence results from this work could inform rehabilitation programs.…”

Section: Introductionmentioning

confidence: 69%

Linear versus Nonlinear Muscle Networks: A Case Study to Decode Hidden Synergistic Patterns During Dynamic Lower-limb Tasks

O'Keeffe¹,

Rathod

Shirazi³

et al. 2023

Preprint

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This paper, for the first time, compares the behaviors of nonlinear versus linear muscle networks in decoding hidden peripheral synergistic neural patterns during dynamic functional tasks. In this paper, we report a case study during which one healthy subject conducts a series of four lower limb repetitive tasks. Specifically, the paper focuses on tasks that involve the right knee joint, including walking, sit-to-stand, stepping, and drop-jump. Twelve muscles were recorded using the Delsys Trigno system. The linear muscle network was generated using coherence analysis, and the nonlinear network was generated using Spearman's correlation. The results show that the degree, clustering coefficient, and global efficiency of the muscle network have the highest value among tasks in the linear domain for the walking task, while a low linear synergistic network behavior for the sit-to-stand is observed. On the other hand, the results show that the nonlinear functional muscle network decodes high connectivity (degree) and clustering coefficient and efficiency for the sit-to-stand when compared with other tasks. We have also developed a two-dimensional functional connectivity plane composed of linear and nonlinear features and shown that it can span the lower-limb dynamic task space. The results of this paper for the first time highlight the importance of observing both linear and nonlinear connectivity patterns, especially for complex dynamic tasks. It should also be noted that through a simultaneous EEG recording (using BrainVision System), we have shown that, indeed, cortical activity may indirectly explain highly-connected nonlinear muscle network for the sit-to-stand task, highlighting the importance of nonlinear muscle network as a neurophysiological window of observation beyond the periphery.

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Section: Introductionmentioning

confidence: 69%

Linear versus Nonlinear Muscle Networks: A Case Study to Decode Hidden Synergistic Patterns During Dynamic Lower-limb Tasks

O'Keeffe¹,

Rathod

Shirazi³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Forty-two reflective markers were attached on the principal bony prominences bilaterally on participants' lower limbs and pelvis, as described in a previous study. 13 No walking instructions were given to participants other than to walk at their selfselected speed in performing at least six valid trials for each of the experimental conditions in randomized order. Six experimental conditions were tested: a control condition with a neutral insole (0 degrees) and lateral wedge insoles with 2, 4, 6, 8, and 10 degrees (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Effects of tailored lateral wedge insoles on medial knee osteoarthritis based on biomechanical analysis: 12-week randomized controlled trial

et al. 2021

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Background: Lateral wedge insoles adjusted by biomechanical analysis may improve the condition of patients with medial knee osteoarthritis. Design: This is a prospective, randomized, controlled, single-blind clinical trial. Setting: The study was conducted in a biomechanics laboratory. Subjects: A total of 38 patients with medial knee osteoarthritis were allocated to either an experimental group (lateral wedge insoles) or a control group (neutral insoles). Interventions: Experimental group ( n = 20) received an adjusted lateral wedge insole of 2, 4, 6, 8, or 10 degrees, after previous biomechanical analysis. Control group ( n = 18) received a neutral insole (0 degrees). All patients used the insoles for 12 weeks. Main measures: Visual analogue scale, Knee Injury and Osteoarthritis Outcome Score questionnaire, biomechanical parameters: first and second peak of the external knee adduction moment and knee adduction angular impulse, and physical performance tests: 30-second sit-to-stand test, the 40-m fast-paced walk test, and the 12-step stair-climb test. Results: After 12 weeks, between-group differences did not differ significantly for pain intensity (−12.5 mm, (95% CI −29.4–4.4)), biomechanical parameters ( p = 0.05), Knee Injury and Osteoarthritis Outcome Score, and physical performance tests, except on the Knee Injury and Osteoarthritis Outcome Score subscale other symptoms ( p = 0.002; 13.8 points, (95% CI 5.6–22.0)). Conclusion: Tailored wedge insoles were no more effective at improving biomechanical or clinically meaningful outcomes than neutral insoles, except on symptoms. More participants from the experimental group reported they felt some improvement. However, these effects were minimal and without clinical significance.

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“…The calibrated anatomical system technique (CAST) was used [21]. Forty-tw tive markers were placed on each subject's bony landmarks, bilaterally, to recons position and orientation of the lower limbs and pelvis as described in previous [22,23]. The markers located at the calcaneus, as well as the first, second, and fif tarsal heads, were attached to the shoes, and the feet were assumed as rigid bodi rigid clusters were also placed bilaterally, on the anterior−lateral aspect of the th of the lower-leg to better follow the segments [24].…”

Section: Equipment and Data Acquisitionmentioning

confidence: 99%

Can Slight Variations to Lateral Wedge Insoles Induce Significant Biomechanical Changes in Patients with Knee Osteoarthritis?

et al. 2022

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Lateral wedge insoles are recommended in order to minimize the impacts of osteoarthritis of the knee. The amount of wedging required to induce a biomechanical response with clinical significance is still controversial. This study aimed to investigate the immediate biomechanical effects of different amounts of wedging in symptomatic medial knee OA. A 3D motion capture system and five force platforms were used to acquire walking kinematic and kinetic data along a 10 m walkway. Each participant was tested for six different lateral wedge insoles (0, 2, 4, 6, 8, and 10°) in a randomized order. Thirty-eight patients with medial osteoarthritis of the knee were recruited. The application of insoles resulted in an incremental reduction of the first peak of the external knee adduction moment under all experimental conditions in comparison with the control condition (0° insole). A significant increase (p < 0.05) was observed in peak ankle eversion and in ankle eversion at the first peak of the external knee adduction moment with insoles higher than 8° and 6°, respectively. Slight variations to lateral wedge insoles, greater than 2°, appear to induce significant biomechanical changes in patients with knee osteoarthritis.

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Biomechanics performance in 30-s chair stand test in patients with medial knee osteoarthritis

Cited by 8 publications

References 0 publications

Linear versus Nonlinear Muscle Networks: A Case Study to Decode Hidden Synergistic Patterns During Dynamic Lower-limb Tasks

Linear versus Nonlinear Muscle Networks: A Case Study to Decode Hidden Synergistic Patterns During Dynamic Lower-limb Tasks

Effects of tailored lateral wedge insoles on medial knee osteoarthritis based on biomechanical analysis: 12-week randomized controlled trial

Can Slight Variations to Lateral Wedge Insoles Induce Significant Biomechanical Changes in Patients with Knee Osteoarthritis?

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