Design and Manufacture of a 3D-Printed Exoskeleton for Hand Rehabilitation in Osteoarthritis

Abstract

Osteoarthritis, a degenerative joint disease primarily affecting older women, imposes significant challenges on joint biomechanics, resulting in pain, functional impairment, and muscle weakness in the affected areas. One approach to managing this condition involves the utilization of physical therapy, which facilitates the preservation of muscle strength. Currently, exoskeletons are being developed to guide physiotherapy, however they are very rigid, expensive and heavy. To address these limitations, this paper proposes an additive manufacturing-based exoskeleton. This exoskeleton, characterized by mechanical movement and electronic control, integrates 3D-printed actuators made from flexible materials, interconnected with a cable system. Control mechanisms, comprising a microcontroller and flexometer, facilitate precise movement coordination, powered by a servomotor. The purpose of this device will be to provide physiotherapy from home to women over 65 years of age who have second degree osteoarthritis in their hands.