نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 دانشیار، گروه مهندسی مکاترونیک، دانشکدهی مهندسی مکانیک، دانشگاه تبریز، تبریز، ایران
2 دانشآموختهی کارشناسی ارشد، گروه مهندسی پزشکی بیومکانیک، دانشگاه تبریز، تبریز، ایران
3 استادیار، گروه علوم تشریح، دانشکدهی پزشکی، دانشگاه علوم پزشکی ارومیه، ارومیه، ایران
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
In many cases related to the diagnosis of gait abnormalities, it is important to evaluate the force produced by the knee driving muscles. On the other hand, direct measurement of muscle force requires invasive and even irreversible action, which is practically impossible. One solution to estimate muscle force is to measure the electromyography signal and use musculoskeletal models to calculate muscle force. Therefore, in this paper, a musculoskeletal model was developed for simulation of the knee movement and muscle force estimation in OpenSim software along with OpenSim API in MATLAB. In this model, the EMG signals is used as the input that trigger the forward dynamics, and generate knee movement as output of the model. The knee angle is compared with experimental goniometric data for validation. The experimental data of four muscles of the biceps femoris, semitendinosus rectus femoris, and vastus medialis, along with the knee goniometric signal have been taken from UCI database. The data is pre-processed before use. The muscle model in the OpenSim software is based on the Hill type model and its parameters are set for each muscle separately. The performed analysis is, in fact, the solution of a forward dynamics problem that the software performs. As the result of this study, we can estimate the muscle force of each muscle during flexion/extension of the knee in a sitting position.
کلیدواژهها English