Development of a Multi-Sensor Array for Non-Radiographic Micromotion Detection of Joint Prostheses

Total joint arthroplasty procedures are increasing year on year, however, the complications that associated with remain. Using total elbow as a case study due to high loosening rates, technique has been further developed accurately monitor position of prosthesis. Micromotion detection endoprosthetic prostheses is vital for longevity along timely, adequate treatment. At present, radiographs used at macro-scale which lacks in early loosening. In this work, multiple magnetic sensor (multi-sensor) configuration was designed can detect real-time micromotion prosthesis without use radiographs. The proposed approach 0.15 mm an average error below 0.05 linearly. This method also eliminated tilting effect and increase sensitivity system 18 improving signal noise ratio reducing RMS compared single configuration.