การพัฒนาระบบไบโอฟีดแบคด้วยสัญญาณไฟฟ้าจากกล้ามเนื้อเพื่อการฟื้นฟูโรคข้อเข่าเสื่อม

Abstract

Osteoarthritis is the main cause of joint dysfunction in the elderly. The cause of the disease is increasing age and obesity. Osteoarthritis often causes defects in the hamstrings and the muscles of the hip, especially the quadriceps muscles. This deficiency may result in pain in osteoarthritis patients and affects walking posture, furthermore, it causes difficulties in life and disability or deformity of the knee. One of the methods of treatment is exercise combined with ergonomic management. The exercise can be done easily and without invasion of the patient's body but exercise should be done regularly and continuously. At least 20-40 minutes each time, 3-5 days a week, therefore, we have developed a Biofeedback game system for application in the recovery of the Quadriceps muscle group by using the technique of importing EMG signals to control a character in the game and tested the system 3 tests together, the result was the first experiment, the frame rate was 60 fps, it was found that the system had a high error due to too high frame rate to be unrelated in the receiving data, but when we selected a threshold value that suitable for the gender of subjects and adjusted the frame rate to 45 fps then the accuracy of the system is quite correct. Additionally, this game system is quite real-time but if you adjust the frame rate FPS, Overlapping Window and Processing Window values to be consistent. The system will definitely be more accurate. Besides, the system should be tested with patients in order to develop a system that is accurate to the physical therapy clinic.