Abstract
This study deals with evaluation of smart economic transfemral Prosthetic consist of a new design and manufacturing of knee joint and design and manufacture of a simple electronic circuit that is programmed to control the muscle pressure on the sensor during movement and transfer the voltage of force sensor after processing in microcontroller to the electric motor to flexion and extend the knee joint. A number of tests were carried out to evaluate the smart prosthetic. Gait cycle and EMG tests were performed on a patient with amputation above the knee in two cases, the first is when the patient is wearing the traditional limb and the second is when the patient is wearing the smart prosthetic. The results showed that the gait cycle during the wearing of the smart prosthetic is more acceptable, stable and balanced than the case of the traditional prosthetic wear. The results of EMG test showed that muscles need less effort during movement when wearing a smart limb and this indicates that the energy spent is less and thus provide comfort to the patient. The results of the finite element analysis (ANSYS 14.5) of the knee joint confirmed the strength of the joint and its ability to carry high weights for patients.
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