Postgraduate Department, Evangelical Mackenzie College of Paraná, Curitiba, Brazil; Neurosurgery Department, Mackenzie Evangelical University Hospital, Curitiba, Brazil.
Postgraduate Department, Evangelical Mackenzie College of Paraná, Curitiba, Brazil.
World Neurosurg. 2024 Oct;190:e1087-e1092. doi: 10.1016/j.wneu.2024.08.069. Epub 2024 Aug 14.
The use of biomodels in the laboratory for studying and training cervical laminoplasty has not yet been reported. We propose the use of a cervical spine biomodel for surgical laminoplasty training.
This is an experimental study. Ten 3D identical cervical spine biomodels were printed based on computed tomography (CT) and magnetic resonance imaging scans of a patient diagnosed with spondylotic cervical myelopathy. The additive manufacturing method used fused deposition modeling and polylactic acid (PLA) was selected as the raw material. The sample was divided into 2 groups: control (n = 5; the biomodels were submitted to CT scanning) and open-door (n = 5; the biomodels were submitted to open-door laminoplasty and postoperative CT). The area and anteroposterior diameter of the vertebral canal were measured on CT scans.
Printing each piece took 12 hours. During the surgical procedure, there was sufficient support from the biomodels to keep them immobilized. Using the drill was feasible; however continuous irrigation was mandatory to prevent plastic material overheating. The raw material made the biomodel CT study possible. The vertebral canal dimensions increased 24.80% (0.62 cm) in area and 24.88% (3.12 mm) in anteroposterior diameter CONCLUSIONS: The cervical spine biomodels can be used for laminoplasty training, even by using thermosensitive material such as PLA. The use of continuous irrigation is essential while drilling.
在实验室中使用生物模型来研究和训练颈椎板成形术尚未见报道。我们提出使用颈椎生物模型进行颈椎板成形术训练。
这是一项实验研究。根据一位诊断为颈椎病性脊髓病的患者的计算机断层扫描（CT）和磁共振成像（MRI）扫描，打印了 10 个 3D 完全相同的颈椎生物模型。使用的增材制造方法是熔丝制造（Fused Deposition Modeling，FDM），选用的原材料是聚乳酸（Polylactic Acid，PLA）。样本分为两组：对照组（n=5；生物模型进行 CT 扫描）和开门组（n=5；生物模型进行开门板成形术和术后 CT 检查）。在 CT 扫描上测量椎管的面积和前后径。
打印每个模型需要 12 小时。在手术过程中，生物模型提供了足够的支撑力，使它们保持固定。使用钻头是可行的，但必须持续冲洗以防止塑料材料过热。原材料使得生物模型的 CT 研究成为可能。椎管面积增加了 24.80%（0.62cm），前后径增加了 24.88%（3.12mm）。
即使使用热敏材料 PLA，颈椎生物模型也可用于板成形术训练。钻孔时必须使用持续冲洗。
