Date of Publication :29th April 2024

Abstract:Knee joints are crucial for daily activities like standing and walking. However, many people suffer from knee impairments such as muscle weakness, pain, paralysis, and gait disorders due to various reasons like stroke, spinal cord injury, post-polio, injury, osteoarthritis, and other diseases. These impairments significantly affect the quality of life of such patients as they are unable to perform daily activities like normal individuals. Therefore, devices that can help such patients regain the ability to walk with a natural gait are desirable. These devices are designed to improve the physical and mental health of the affected individuals. Passive exoskeletons are not motorized and are often used for ergonomic support, to prevent repetitive stress injuries, or to help hold tools or equipment. The design of the device comprises of springs that work in parallel with the muscles of the quadriceps femoris. The springs store mechanical energy during knee flexion (the negative work phase) and release that energy during the subsequent knee extension (the positive work phase), augmenting the muscles. However, due to the high costs of the exoskeleton, people cannot buy this exoskeleton. However, for cost efficiency and to reduce the pain in the knees of old age people who also carry regular life weights this passive knee exoskeleton will help.

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