Publication: Design improvement for angle-of-pull (AOP) resistor point locator for application physiotherapy
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Date
2024-07
Authors
Lim, Zhen Hong
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Abstract
The increasing prevalence of musculoskeletal disorders necessitates the development of precise and user-friendly tools for physiotherapy. This study introduces the Angle Assist (A²) device, designed to enhance the accuracy and effectiveness of rehabilitation exercises by precisely locating the resistance point, where the line of pull can generate maximal muscle torque. The primary problem addressed is the lack of accessible, accurate tools for measuring Angle of Pull (AOP) and resistance points in clinical settings. The main objectives of this Final Year Project (FYP) are to design an angle of pull resistor locator with a precise angle reading display and pinpoint the resistance point, and to develop a prototype that reduces the time required to determine the AOP and pinpoint the resistance point by at least 10%. The methodology involved developing a prototype using the MPU6050 sensor, an OLED display, and laser pointers, controlled via customized firmware. Testing included accuracy tests comparing the device’s measurements to true angles, reliability tests for consistent readings, user feedback surveys to assess usability and satisfaction, and time improvement tests to measure efficiency. An online survey gathered feedback from 20 respondents, including physiotherapy students, practicing physiotherapists, and lecturers. Results indicate that the A² device demonstrates high accuracy with an R² value of 0.9991 when compared to true angles. Most respondents rated the device highly for usability, accuracy, and overall satisfaction, with 85% expressing satisfaction with its functionality and 90% highlighting the laser pointer as beneficial for pinpointing the resistance point. Additionally, the device reduced the time required to determine the AOP and pinpoint the resistance point by 16.92%, exceeding the initial objective. In conclusion, the A² device enhances physiotherapy practices by providing precise angle measurements and improving resistance placement accuracy. The positive feedback from users underscores its effectiveness and potential for widespread clinical application.