Purpose: This paper aimed to explore the design and application of a customized navigation board for lumbar disc ablation.

Methods: Eight cases of lumbar disc herniation (diagnosed by spiral computerized tomography, CT) to be treated via intervertebral ablation using a path from the skin to the herniated intervertebral disc were included. The lumbar vertebrae, sacrum, and skin (adhered to a standard base, Figure 1) were reconstructed based on continuous spiral CT slices. The path was designed by the surgeon (Figure 2) to be line between the base and the puncture point, and was guided by the navigation board. The board was prototyped and used in ablation localization as a guide canal. The intra- and post-operative complications were recorded during the operation and 48-hours post operation, respectively.

Results: In all eight cases, target discs were punctured after a duration ranging from 6 to 13 minutes. No complications were observed either during the operation or at 48 hours post-operatively.

Conclusion: This customized navigation board could promote the accuracy and diminish the duration of intervertebral disc ablation. A stereolithography apparatus (SLA) and photosensitive resin could generate a customized reverse guide board with high fidelity for intervertebral disc ablation. Manually performed rigid registration can meet the accuracy requirements. The results presented in the present paper demonstrated that rapid prototyping via an SLA and photosensitive resin could maintain the accuracy and dynamic stability of a customized navigation board for lumbar disc ablation.

目的：本文旨在探讨定制的腰椎间盘切除术导航板的设计和应用。

方法：包括8例腰椎间盘突出症（通过螺旋计算机断层扫描，CT诊断），应通过从皮肤到椎间盘突出的路径行椎间切除术治疗。腰椎，骨和皮肤（附着在标准底座上，图1）是基于连续螺旋CT切片重建的。路径由外科医生设计（图2），使其位于基座和穿刺点之间，并由导航板引导。该板是原型，并在消融定位中用作引导管。分别在术中和术后48小时记录术中和术后并发症。

结果：在所有八种情况下，经过6到13分钟的时间后才刺穿目标椎间盘。在手术过程中或术后48小时均未观察到并发症。

结论：这种定制的导航板可以提高准确性，并减少椎间盘消融的持续时间。立体光刻设备（SLA）和光敏树脂可以生成具有高保真度的定制反向导向板，用于椎间盘消融。手动执行刚性对位可以满足精度要求。本文提出的结果表明，通过SLA和光敏树脂进行快速原型制作可以保持定制的腰椎间盘消融导航板的准确性和动态稳定性。