Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
The hip joint and the spine interact with each other in the human body. In recent years, the assessment of spinal pelvic alignment has been particularly useful for understanding the pathological condition. Since the actual measurement of the in-vivo force due to the alignment change is invasive, assessment by the musculoskeletal model is clinically useful. However, there are few accurate full body musculoskeletal models. In this study, we developed the full body three-dimensional musculoskeletal model and validated the accuracy. A full body musculoskeletal model is constructed by merging our constructed trunk musculoskeletal model and a lower limb musculoskeletal model. In validation, we conducted inverse dynamics analysis and muscle tension optimization for five movements: static standing, 36° of flexion, 15° of extension, 18° of lateral bending, and 23° of lateral bending, and compared the intradiscal pressure (IDP) of lumbar vertebrae L4/L5 level calculated with the actual measured values. As a result, the correlation coefficient was strongly correlated with 0.9306. Furthermore, the root mean square error (RMSE) was 0.0914, suggesting that this model is close to the biological model.
