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Bionic knee was important basic driving element for biped robot. with the adult male's right leg knee working as bionic prototype, the three-dimensional finite element model was established, and the cinnections balance equation was established with the help of nonlinear contact theory, then system penalty function was used to deal with the contact constraint by considering the minimum potential energy...
This paper presents the development of paraplegic joint model using Artificial Neural Network (ANN). A series of experiments using Functional Electrical Stimulation (FES) with different stimulation frequencies, pulse width and pulse duration to investigate the impact on the leg swing angle is conducted. The data obtained is used to develop the paraplegic leg joint model. 74810 training data and 33602...
Passive knee laxity is an important clinical measure to assess function after joint replacement. Clinical observations suggest that the use of minimally invasive surgical techniques in knee arthroplasty may affect the surgeon's ability to orient and position the prosthetic components accurately. Further, recent studies suggest that malplaced prosthetic components in unicompartmental knee replacement...
A comprehensive research has been undertaken to simulate a model based on the functional electrical stimulation (FES), the only method to stimulate the paralyzed muscles of paraplegics. The simulation of sit-to-stand (STS) movement using a patient driven technique has been presented in this paper. The strategy is to use the voluntary body effort of the patient to perform the STS movement. The main...
Conventional trans-femoral (TF) prosthesis adopts body-powered actuation manner, in which flexion and extension of knee joint rely on the movement of residual limb and body weight of amputee and is controlled by adjustable damping force output by pneumatic or hydraulic cylinder mounted on the TF prosthesis. This manner, however, suffers from the deficiency of driving torque when carrying out some...
As a part of the EU-project ldquoRISErdquo a pendulum test was applied to evaluate the effect of functional electrical stimulation (FES) on denervated degenerated anterior thigh muscles. A sensor-actuator system was connected to the lower leg via an adjustable lever to hold the subject's knee joint align with the pivot of the test device. The motor of the pendulum system allowed to compensate static...
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