The significance of frontal plane static alignment in anticipating dynamic knee moment among transtibial prosthesis users: A cross-sectional study

In the process of transtibial prosthetic fitting, alignment is the process of positioning the prosthetic foot relative to the residual limb. Changes in frontal plane alignment can impact knee moments during walking, which can either cause or, when aligned properly, prevent injuries. However, clinica...

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Bibliographic Details
Published in:Gait & posture 2024-07, Vol.112, p.128-133
Main Authors: Jonkergouw, Niels, Sprockel, Astrid T., Bruijn, Sjoerd M., Kooiman, Vera, Prins, Maarten R., Leijendekkers, Ruud A.
Format: Article
Language:English
Subjects:
Adult
Aged
Alignment
Amputees
Artificial Limbs
Biomechanical Phenomena
Bone-anchored prosthesis
Cross-Sectional Studies
Female
Gait - physiology
Gait analysis
Humans
Knee Joint - physiology
Knee moments
Male
Middle Aged
Prosthesis Fitting
Tibia - physiology
Transtibial
Walking - physiology
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Summary:In the process of transtibial prosthetic fitting, alignment is the process of positioning the prosthetic foot relative to the residual limb. Changes in frontal plane alignment can impact knee moments during walking, which can either cause or, when aligned properly, prevent injuries. However, clinical evaluation of dynamic knee moments is challenging, limiting prosthetists' insights into dynamic joint loading. Typically, knee joint loading is assessed in static stance using the knee moment arm as a proxy for subsequent dynamic alignment. It remains uncertain if static alignment accurately represents actual dynamics during walking. Is the frontal knee moment arm in stance predictive for the knee moment arm and external knee adduction moment during gait in transtibial bone-anchored prosthesis users? In this cross-sectional study, twenty-seven unilateral transtibial bone-anchored prosthesis users underwent data acquisition on the M-Gait instrumented treadmill. Static and dynamic measurements were conducted, and knee moment arm and external knee adduction moment were calculated. Pearson's correlation and linear regression analyses were performed to examine relationships between static and dynamic knee moment arms and external knee adduction moments. The static knee moment arm showed significant associations with dynamic knee moment arm at the ground reaction force peaks (First: r=0.60, r2=35%, p
ISSN:0966-6362
1879-2219
1879-2219
DOI:10.1016/j.gaitpost.2024.05.012