SaFePlay: A lightweight portable sensing system to estimate knee adduction moment
Journal
ACM International Conference Proceeding Series
Pages
435-440
Date Issued
2017
Author(s)
Abstract
Traditional lower limb biomechanics detection system are not only expansive but difficult to monitor user in the whole day. It is not friendly to the large scale of patients with knee joint disease such as knee osteoarthritis. Therefore, we design a lightweight portable lower limbs motion monitoring, biomechanics measurement, and analysis system, Smart Footwear Platform (SaFePlay). We apply SaFePlay to estimate the index of knee joint loading, knee adduction moment (KAM), by the lever-arm approach. We get information about user's foot pressure and knee bending angle, then we can derive KAM with body parameters. We conduct an experiment to verify the accuracy of the proposed method by comparing with motion capture and 3DoF force plates systems as ground truth. The result shows that the curve of KAM from SaFePlay is similar to the ground truth. The proposed method not only makes KAM evaluation portable but also requires only lightweight devices.
SDGs
Publisher
Association for Computing Machinery
Type
conference paper