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Biomechanics of walking with a rollator frame

Discussion in 'Gerontology' started by Hylton Menz, Jan 11, 2006.

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  1. Hylton Menz

    Hylton Menz Guest


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    From Biomedical Engineering Online:

    Biomechanical analysis of rollator walking

    Tine Alkjaer, Peter K Larsen, Gitte Pedersen, Linda H Nielsen and Erik B Simonsen

    Abstract

    Background

    The rollator is a very popular walking aid. However, knowledge about how a rollator affects the walking patterns is limited. Thus, the purpose of the study was to investigate the biomechanical effects of walking with and without a rollator on the walking pattern in healthy subjects.

    Methods

    The walking pattern during walking with and without rollator was analyzed using a three-dimensional inverse dynamics method. Sagittal joint dynamics and kinematics of the ankle, knee and hip were calculated. In addition, hip joint dynamics and kinematics in the frontal plane were calculated. Seven healthy women participated in the study.

    Results

    The hip was more flexed while the knee and ankle joints were less flexed/dorsiflexed during rollator walking. The ROM of the ankle and knee joints was reduced during rollator-walking. Rollator-walking caused a reduction in the knee extensor moment by 50% when compared to normal walking. The ankle plantarflexor and hip abductor moments were smaller when walking with a rollator. In contrast, the angular impulse of the hip extensors was significantly increased during rollator-walking.

    Conclusions

    Walking with a rollator unloaded the ankle and especially the knee extensors, increased the hip flexion and thus the contribution of hip extensors to produce movement. Thus, rollator walking did not result in an overall unloading of the muscles and joints of the lower extremities. However, the long-term effect of rollator walking is unknown and further investigation in this field is needed.

    All BioMedCentral papers are open access, so you download the PDF for free here.
     
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