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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2021 Mar 18;68(4):1341–1350. doi: 10.1109/TBME.2020.3027477

Figure 2. Data Analysis Workflow for Determining Presence of Edema and disruption to Structural Integrity of the Ankle.

Figure 2.

(a) The data acquisition system placed on the subject’s leg with the necessary current and voltage electrodes placed distally and proximally to the ankle joint and the IMU placed on the foot. (b) Sample data of a representative injured subject’s X-axis angular velocity, Z-axis acceleration, and reactance measured at 5kHz and 100 kHz. (c) A magnified view of the sample data showing how the data windows are created and used in splitting to split the reactance data into vectors per step. (d) The reactance vectors per step are used in the model to detect edema and collagen fiber tear in the ankle joint.