一个完整的形状模型,用于纠正 osteotomy 的远距离半径不良联合
Camiel J Smees1,2, Judith Olde Heuvel3, Stein van der Heide3
1Centre for Orthopaedic Surgery OCON, Hengelo, The Netherlands. c.smees@ocon.nl.
概括
一个新的形状完成模型可以从骨断裂的骨头重建健康的3D半径模型,在远半径断裂病例中,当相反的半径无法用于3D规划时,提供解决方案.
科学领域:
- 整形外科手术 整形外科手术
- 医学成像医学成像
- 计算机辅助设计是指计算机辅助设计.
背景情况:
- 远距离半径不良结合通常需要对骨切除术进行3D规划.
- 反边半径是一个常见的模板,但在约10%的情况下不适合.
- 一个形状完成模型通过生成一个健康的半径模型提供了一个替代方案.
研究的目的:
- 开发和临床评估一个形状完成模型,用于重建健康的半径模型.
- 为3D规划提供一个可行的替代方案,当 contralateral 半径是不可用的.
主要方法:
- 一个统计形状模型 (SSM) 被训练在80个健康半径的CT扫描上.
- 使用SSM创建了一个形状完成模型,预测距离12%的距离88%.
- 模型的性能在10个预留的CT扫描中进行了测试.
主要成果:
- 形状完成模型产生了临床上可行的3D半径重建.
- 平均旋转误差很低:半径倾斜 (2.6°),飞行倾斜 (3.6°) 和轴旋转 (2.6°).
- 平均翻译误差也很小:背部移位 (0.7毫米),辐射移位 (0.8毫米) 和延长 (1.7毫米).
结论:
- 开发的形状完成模型可用于在缺乏健康的对侧半径的情况下进行3D规划.
- 由于错误率,目前还不建议在健康的逆侧半径患者中临床应用.
- 长度不匹配,这是最重要的错误,可以在3D规划中使用骨作为参考来纠正.
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