制作患者专用的 3D 打印钻头导向器,用于治疗股骨头血管性坏死。

IF 3.2 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Cameron Bell, Alborz Feizi, Gregory R Roytman, Alim F Ramji, Steven M Tommasini, Daniel H Wiznia
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引用次数: 0

摘要

背景:股骨头血管性坏死(AVN)或股骨头组织因缺乏血液供应而坏死,是导致非老年患者接受全髋关节置换术的主要原因。股骨头减压术(CD)是重建 AVN 患者血流的有效治疗方法。旨在提高其疗效的技术是一个正在积极研究的领域。我们建议使用 3D 打印钻孔导板来精确引导 CD 的治疗设备:方法:我们使用股骨锯骨、图像处理软件和三维建模软件,创建了一个具有预定钻孔轨迹的定制设备,并测试了三维打印钻孔导向器用于 CD 的可行性。一名受过研究员培训的骨科医生使用钻孔导向器将一个 8 ga、230 mm 长的减压装置放置在三个合成股骨中。对带有钻导和减压装置的锯骨进行了 CT 扫描。CT 扫描在三维建模软件中进行处理。将测量角度偏差和针尖偏差的描述性统计结果与原始虚拟规划模型进行比较:结果:与原始三维模型相比,试验的平均位移为 1.440 ± 1.03 mm,平均角度偏差为 1.093 ± 0.749º:结论:钻头导向器能准确地引导减压装置沿着预定的钻头轨迹前进。通过与文献报道值的比较以及考虑 AVN 病变大小,对准确性进行了评估。这项研究证明了使用 3D 打印技术提高 CD 技术疗效的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fabricating patient-specific 3D printed drill guides to treat femoral head avascular necrosis.

Background: Femoral head avascular necrosis (AVN), or death of femoral head tissue due to a lack of blood supply, is a leading cause of total hip replacement for non-geriatric patients. Core decompression (CD) is an effective treatment to re-establish blood flow for patients with AVN. Techniques aimed at improving its efficacy are an area of active research. We propose the use of 3D printed drill guides to accurately guide therapeutic devices for CD.

Methods: Using femur sawbones, image processing software, and 3D modeling software, we created a custom-built device with pre-determined drill trajectories and tested the feasibility of the 3D printed drill guides for CD. A fellowship trained orthopedic surgeon used the drill guide to position an 8 ga, 230 mm long decompression device in the three synthetic femurs. CT scans were taken of the sawbones with the drill guide and decompression device. CT scans were processed in the 3D modeling software. Descriptive statistics measuring the angular and needle-tip deviation were compared to the original virtually planned model.

Results: Compared to the original 3D model, the trials had a mean displacement of 1.440 ± 1.03 mm and a mean angle deviation of 1.093 ± 0.749º.

Conclusions: The drill guides were demonstrated to accurately guide the decompression device along its predetermined drill trajectory. Accuracy was assessed by comparing values to literature-reported values and considered AVN lesion size. This study demonstrates the potential use of 3D printing technology to improve the efficacy of CD techniques.

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