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Quantifying Functional Difference in Centre of Pressure Post Achilles Tendon Rupture using Sensor Insoles

Significant advances are being made to instrument and more objectively quantify gait and mobility assessment, treatment and rehabilitation. Wearable, inertial, optical and location-based technologies are proposed as scalable soutions, suited to both clinic and home-based settings, that can provide clinically meaningful insights into gait and mobility. In this paper, sensorised insoles are shown to provide the means to measure where pressure is distributed through each foot for each step, while it is in contact with the ground. Through profiling the points through which pressure is applied over each step and comparing changes between the affected and healthy limbs, insights into biomechanical foot dysfunction are shown for a patient population which may inform assessment, treatment and rehabilitation. This paper proposes a series of sensor-agnostic metrics derived from sensorised insoles to quantify foot mobility over a series of steps in a patient population. Differences in these metrics are shown between the affected and unaffected foot in a cohort of patients 8 weeks post Achilles tendon rupture.