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Background: Osteogenesis imperfecta (OI) is a genetic connective tissue disorder characterized by skeletal deformity and increased risk of fracture. Independent mobility is of concern for OI patients as it is associated with the quality of life. The present study investigates the variation of kinetic and kinematic gait parameters of type IV OI subjects and compares them with age-matched healthy subjects.
Materials And Methods: Gait analysis is performed on five type IV OI patients and six age-matched normal subjects. Spatiotemporal, kinematic, and kinetic data are obtained using Helen Hayes marker placement protocol.
Results: The results indicate an imprecise double-humped profile for vertical ground reaction force (GRF) with reduced ankle push off power and walking speed for OI subjects. Moreover, a comparison of vertical GRFs in OI subjects with that of healthy subjects suggests lower values for the former. The results encourage and motivate for further investigation with a bigger set of subjects.
Conclusion: This information may be useful in developing a better understanding of pathological gait in type IV OI subjects, which ultimately helps the design of subject-specific implants, surgical preplanning, and rehabilitation.
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http://dx.doi.org/10.4103/ortho.IJOrtho_291_18 | DOI Listing |
Foot Ankle Int
September 2025
Department of Radiology, School of Medicine, Keio University, Shinjuku-ku, Tokyo, Japan.
Background: Coronal wedge insoles are commonly prescribed to mitigate musculoskeletal disorders, yet their static-standing kinematic and kinetic effects on lower extremity joints remain insufficiently understood.
Methods: This cross-sectional experimental study included 15 healthy older adults (mean 64.9 ± 6.
J Biomech
September 2025
Human Movement Laboratory, School of Health Sciences, Western Sydney University, Campbelltown, NSW, Australia; Translational Health Research Institute, School of Health Sciences, Western Sydney University, Campbelltown, NSW, Australia.
Hip osteoarthritis (OA) is an increasingly significant public health concern, contributing to substantial economic and societal burden worldwide. Emerging evidence suggests that running may promote cartilage health through optimal joint loading. However, it remains unclear how modifications to running posture, such as altering footstrike patterns or adjusting foot progression angles, affect hip contact forces (HCF).
View Article and Find Full Text PDFJ Biomech
September 2025
Department of Kinesiology and Health Science, University of Waterloo, Waterloo, ON N2L 3G1, Canada. Electronic address:
It is unknown how knee osteoarthritis pain affects joint power distribution while cycling. The study purposes were to (1) investigate if seat height, workload and any difference in hip or knee extensor strength affected asymmetry of hip, knee and ankle joint power during cycling; and (2) determine the relationship between knee osteoarthritis pain asymmetry and joint power asymmetry at the hips, knees, ankles and total leg. Asymmetry was the difference between dominant and non-dominant legs.
View Article and Find Full Text PDFDeveloping musculoskeletal hand models requires a variety of experimental biomechanics data. However, collecting robust biomechanics hand data is a time intensive process leading to a lack of widely available datasets. To address this issue the biomechanics hand modeling database (BHaM) was made as a collection of experimental data to aid the development, testing, and validation of musculoskeletal models and simulations.
View Article and Find Full Text PDFJ Sports Sci
September 2025
Department for Health, University of Bath, Bath, UK.
This study evaluated the agreement between markerless motion capture and criterion methods for estimating mechanical work (external and internal) performed during tennis strokes. Sixteen tennis players performed 10 serve, forehand and backhand movements whilst motion data were captured concurrently with a custom 3D markerless system (utilising open-source pose estimation; HRNet and OpenPose) and two criterion methods: marker-based motion capture and ground reaction forces. Centre of mass kinetic and potential energy were calculated and used to compute external mechanical work from all methods, whilst segment kinetic energies were calculated and used to compute internal mechanical work from the kinematic approaches only.
View Article and Find Full Text PDF