| 四种组合方法规划髋臼前柱置钉通道的比较研究 |
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投稿时间：2023-10-29 修订日期：2024-02-15
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| 期刊信息：《中国骨伤》年，第卷，第期，第-页 |
| DOI： |
| 基金项目:南华大学博士科研启动资金项目（2015XQD39） |
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| 中文摘要:目的：基于大密度点云数据实现对髋臼前柱置钉通道的全局优化。方法：在规划髋臼前柱置钉通道时，针对现行CAD规划方法是否具有先进性的问题，提出了点云获取渠道相同、方向线创建软件各异、三维设计与虚拟实验软件相同的四种组合方法：Mimics+Imageware+UG、Mimics+3DReshaper+UG、Mimics+ZEISS Quality Suite+UG与Mimics+Design X+UG，并依据二次修剪模型的中心点点集和实体点云分别创建方向线，应用于三个髋臼样本左侧前柱置钉通道的规划。结果：以未出现髋臼窝和耻骨穿破现象的最大内接圆柱体作为髋臼前柱的置钉安全通道来评价各方法的先进性。在选取相关特征明显的中心点点集作为样本点时，方向线的拟合效果均优于未去噪的实体点云拟合效果；Mimics+Imageware+UG和Mimics+3DReshaper+UG的组合方法在利用中心点点集进行规划时法能够高效、稳定地获得理想的规划结果，分别在髋臼样本1、2、3中得到的最大内接圆直径为10.35mm、9.62mm、9.24mm；方向线依据实体点云时，Mimics+ZEISS Quality Suite+UG和Mimics+Design X+UG的组合方法均不适用；而Mimics+3DReshaper+UG的实体点云去噪规划法可以稳定地获得数值最大的置钉安全通道，分别在髋臼样本1、2、3中得到的最大内接圆直径为10.66mm、10.96mm、9.48mm。结论：在进行髋臼内固定术时推荐置钉通道规划人员采用鲁棒性好的Mimics+Imageware+UG或Mimics+3DReshaper+UG中心点点集规划法，如果时间充裕，建议采用Mimics+3DReshaper+UG的实体点云去噪规划法以获得数值最大的置钉安全通道。 |
| 【关键词】髋臼前柱置钉通道 全局优化 方向线创建方法 规划差异机理 3DReshaper |
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| A comparative study of four combined methods for planning access to the anterior acetabular column for nail placement |
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| ABSTRACT Objective Global optimisation of anterior acetabular column pinning channels can be achieved based on large density point cloud data. Methods In planning access for anterior acetabular column pinning,To address the issue of whether the current CAD planning methods are advanced or not, four combinations of the same point cloud acquisition channels, different directional line creation software, and the same 3D design and virtual experiment software were proposed: Mimics+Imageware+UG, Mimics+3DReshaper+UG, Mimics+ZEISS Quality Suite+UG and Mimics+Design X+UG, and created directional lines based on the centroid point set and solid point cloud of the secondary pruning model, respectively, and applied them to the planning of the left anterior column pinning channel of the three acetabular samples. Results The maximum internally connected cylinder without acetabular socket and pubic bone penetration was used as a safe passage for nailing of the anterior acetabular column to evaluate the advancement of each method.The fitting effect of the directional line is better than that of the unnoised solid point cloud when the central point set with obvious relevant features is selected as the sample points; and the combination of Mimics+Imageware+UG and Mimics+3DReshaper+UG can efficiently and stably obtain the desirable planning results when planning with the central point set, respectively, in the three acetabular samples 1, 2, 3, and 4. The maximum internal joint circle diameters obtained in samples 1, 2, and 3 are 10.35 mm, 9.62 mm, and 9.24 mm; and the directional lines are based on the solid point cloud when the combined methods of Mimics+ZEISS Quality Suite+UG and Mimics+Design X+UG are not applicable; whereas the Mimics+3DReshaper+UG The solid point cloud denoising planning method can stably obtain the maximum value of the safe channel for nail placement, and the maximum internal joint circle diameters obtained in acetabular samples 1, 2, and 3 are 10.66 mm, 10.96 mm, and 9.48 mm, respectively.Conclusion It is recommended that the nail placement channel planners use robust Mimics+Imageware+UG or Mimics+3DReshaper+UG centre point set planning method, and if there is enough time, it is recommended to use the solid point cloud denoising planning method of Mimics+3DReshaper+UG in order to obtain the maximum value of safe channels for nail placement. |
| KEY WORDS Acetabular anterior column pinning access Global optimisation Direction line creation method Planning variance mechanism 3DReshaper |
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