The 6DOF knee kinematics of healthy subjects during sloped walking compared to level walking |
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| Affiliation: | 1. School of Medicine, South China University of Technology, Guangzhou 510006, Guangdong, China;2. Department of Orthopaedics, Guangdong Provincial People''s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China;3. Shantou Central Hospital, Shantou 515000, Guangdong, China;4. School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510000, Guangdong, China;1. INSERM, CIC 1432, Module Plurithématique, Plateforme d’Investigation Technologique, Dijon, France;2. CHU Dijon-Bourgogne, Centre d’Investigation Clinique, Module Plurithématique, Plateforme d’Investigation Technologique, Dijon, France;1. INSERM, CIC 1432, Module Plurithématique, Plateforme d’Investigation Technologique, Dijon, France;2. CHU Dijon-Bourgogne, Centre d’Investigation Clinique, Module Plurithématique, Plateforme d’Investigation Technologique, Dijon, France;3. CHU Dijon-Bourgogne, Service de Rhumatologie, Dijon, France;4. INSERM, UMR1093-CAPS, Université de Bourgogne Franche Comté, UFR des Sciences du sport, F-21000 Dijon, France;1. INSERM, CIC 1432, Module Plurithématique, Plateforme d’Investigation Technologique, Dijon, France;2. CHU Dijon-Bourgogne, Centre d’Investigation Clinique, Module Plurithématique, Plateforme d’Investigation Technologique, Dijon, France;3. INSERM, UMR1093-CAPS, Université de Bourgogne Franche Comté, UFR des Sciences du sport, F-21000 Dijon, France;1. School of Human Movement Science, Faculty of Medicine and Surgery, University of Rome ‘‘Tor Vergata’’, Rome, Italy;2. Department of Human Neuroscience, Faculty of Medicine and Dentistry, Sapienza University of Rome, Italy;3. Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Italy;4. Department of Medicine Systems, University of Rome ‘‘Tor Vergata’’, Rome, Italy;5. Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, Rome, Italy |
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| Abstract: | BackgroundLevel Walking is a frequent functional movement during daily life. However, sloped walking is also common. Exploring 6DOF knee kinematics during sloped walking is important. It provides a reference for the rehabilitation, safety, and knee health of patients with knee diseases walking on sloped surfaces.Research questionThe study aimed to explore 6DOF knee kinematics characteristics during sloped walking compared to level walking. We hypothesized that tibial anteroposterior translation and flexion angle (the sagittal plane) were significantly different from those of level walking.MethodsOne hundred young, healthy adults (50 males and 50 females) were recruited for this study. A three-dimensional gait analysis system was used to collect 6DOF knee kinematics during level and sloped walking. The slope was set to ± 15% when the sloped walking was performed.ResultsSloped walking mainly increased knee flexion angle (upslope, 2.5–26.2°, 1–100% gait cycle (GC), p < 0.05; downslope, 1.7–11.9°, 15–95% GC, p < 0.05) and anterior tibial translation (upslope, 0.7–4.1 mm, 3–54% GC & 0.6–2.1 mm, 80–94% GC; downslope, 1.0–2.2 mm, 21–69% GC) in the participants’ knees. However, participants' other 4DOF knee kinematics during sloped walking were significantly different from those during level walking (p < 0.05). Participants had ‘drastically changeable’ knee kinematic alterations in the transverse and coronal plane (the other 4DOF knee kinematics) during sloped walking compared to level walking.SignificanceOur results confirmed the hypothesis. Sloped walking significantly increased anterior tibial translation (in most GC) and flexion angle. These kinematic changes in healthy subjects should be evaluated and further explored for patients with knee diseases, such as anterior cruciate ligament deficiency. Our findings are meaningful for their rehabilitation or safety or knee health while walking on sloped surfaces. Our study may provide a pilot reference for the 6DOF knee kinematic exploration of sloped walking. |
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| Keywords: | Sloped walking Knee 6DOF Kinematics |
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