The

doi:10.12122/j.issn.1673-4254.2024.05.19

Abstract

Abstract:

Objective To develop the 'E-Bone', a comprehensive one-stop preoperative planning system for reverse total shoulder arthroplasty with improved accuracy and efficiency. Methods The nnU-net deep neural network was utilized for scapula segmentation to obtain precise scapula segmentation results. Based on the 3 key factors, namely bone density, upward and downward angle and nail length, the base was automatically positioned. The quantitative parameters required for surgical planning were calculated. A personalized guide plate was generated by combining glenoid morphology and base positioning information. The system interface was developed to modularize various functions for easy use, providing interactive operation and real-time display. Results Compared with the Mimics system, the 'E-bone' preoperative planning system reduced complex manual adjustments during the planning process. The average planned nail length was longer than that of the Mimics system, and the planning time was reduced by 86%. The scapula segmentation accuracy of this system reached 99.93%, better than that of Mimics to achieve a higher precision. Conclusion The "E-bone" system provides a one-stop, efficient, and accurate preoperative planning system for reverse shoulder replacement and potentially broader clinical applications.

Key words: one-stop surgical planning, reverse total shoulder arthroplasty, preoperative planning system, scapula segmentation, base positioning

Mu LI, Yun MI, Shiwen SHEN, Xinyuan WU, Jingdong YAN, Bin CHEN, Lei CAO. The "E-bone" — a one-stop preoperative planning system for reverse total shoulder arthroplasty[J]. Journal of Southern Medical University, 2024, 44(5): 967-973.

Figures/Tables 8

Fig.1 Preoperative planning flow chart for reverse total shoulder arthroplasty (RTSA).

Fig.2 nnU-Net training flow chart.

Fig.3 The process of base positioning.

Fig.4 Comparison between MC method and ray tracing method.

Fig.5 Interface of the "E-Bone" system.

Fig.6 Comparison of planning time and nail length between the control group and experimental group. *P<0.05, ***P<0.001.

Fig.7 Comparison of the segmentation results between the "E-bone" system and Mimics system.A: Original image (RAW); B: Image segmentation by Mimics; C: Image segmentation by our method (nnU-net); D: 3D reconstruction by Mimics; E: 3D reconstruction by Mimics after manually adjusted by doctor with D; F: 3D reconstruction by our method.

Fig.8 Algorithm stability evaluation of the system.

References 25

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The "E-bone" — a one-stop preoperative planning system for reverse total shoulder arthroplasty

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