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. 2021 Oct 31:2021:1985741.
doi: 10.1155/2021/1985741. eCollection 2021.

An Improved EMG-Driven Neuromusculoskeletal Model for Elbow Joint Muscle Torque Estimation

Bingshan Hu  1   2 , Haoran Tao  1 , Hongrun Lu  1 , Xiangxiang Zhao  3 , Jiantao Yang  1   2 , Hongliu Yu  1   2
Affiliations

An Improved EMG-Driven Neuromusculoskeletal Model for Elbow Joint Muscle Torque Estimation

Bingshan Hu et al. Appl Bionics Biomech. .

Abstract

The accurate measurement of human joint torque is one of the research hotspots in the field of biomechanics. However, due to the complexity of human structure and muscle coordination in the process of movement, it is difficult to measure the torque of human joints in vivo directly. Based on the traditional elbow double-muscle musculoskeletal model, an improved elbow neuromusculoskeletal model is proposed to predict elbow muscle torque in this paper. The number of muscles in the improved model is more complete, and the geometric model is more in line with the physiological structure of the elbow. The simulation results show that the prediction results of the model are more accurate than those of the traditional double-muscle model. Compared with the elbow muscle torque simulated by OpenSim software, the Pearson correlation coefficient of the two shows a very strong correlation. One-way analysis of variance (ANOVA) showed no significant difference, indicating that the improved elbow neuromusculoskeletal model established in this paper can well predict elbow muscle torque.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The improved Hill musculotendon model.
Figure 2
Figure 2
Calculation flow of the Hill musculotendon model.
Figure 3
Figure 3
Comparison of elbow musculoskeletal models.
Figure 4
Figure 4
Sagittal view of the humeral ulnar joint during flexion.
Figure 5
Figure 5
Schematic diagram of the improved musculoskeletal model of the elbow joint established in this paper.
Figure 6
Figure 6
Elbow muscle torque prediction workflow.
Figure 7
Figure 7
Planned elbow angle change.
Figure 8
Figure 8
The related muscle activation obtained by OpenSim.
Figure 9
Figure 9
Muscle force and time relationship under the two models.
Figure 10
Figure 10
Muscle length and time relationship under two models.
Figure 11
Figure 11
Comparative diagram of elbow joint muscle resultant torque predicted by three models.
Figure 12
Figure 12
Elbow torque distributed among the muscles calculated according to the model in this paper.
See this image and copyright information in PMC

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