He Guangyu, Dai Amos Z, Mustahsan Vamiq M, Shah Aadit T, Li Liming, Khan Jafar A, Bielski Michael R, Komatsu David E, Kao Imin, Khan Fazel A
Department of Mechanical Engineering, Stony Brook University, Stony Brook, NY, USA.
Department of Orthopedics, Stony Brook University Hospital, Stony Brook, NY, USA.
J Orthop. 2022 May 11;32:60-67. doi: 10.1016/j.jor.2022.04.018. eCollection 2022 Jul-Aug.
Accurate reproduction of a preoperative plan is critical in wide resection of bone sarcomas. Recent advances in computer navigation and 3D-custom jigs have increased resection accuracy, although with certain practical drawbacks.
We developed a novel "projector method" that projects the preoperative osteotomy lines onto the bone. A sawbone study was conducted to evaluate accuracy in reproducing preoperative resection plans. An additional cadaver experiment was conducted to evaluate feasibility in a more realistic operating room setting.
Based on the results of experiments conducted on sawbones, the proposed light projector method was more accurate at depicting desired osteotomy lines than a traditional manual method, reducing the corner deviation from 2.53 mm to 0.35 mm, angular deviation from 2.10° to 0.31°, and point deviation from 4.66 mm to 0.48 mm (p < 0.001). Results of the cadaver experiment were consistent with those of sawbone experiments.
The new projector method can accurately assist surgeons in visualizing the preoperative plan of osteotomy lines accurately in surgery.
在骨肉瘤广泛切除术中，准确重现术前计划至关重要。尽管计算机导航和3D定制夹具取得了最新进展，提高了切除精度，但仍存在一些实际缺点。
我们开发了一种新颖的“投影仪方法”，将术前截骨线投影到骨头上。进行了一项锯骨研究，以评估重现术前切除计划的准确性。还进行了一项额外的尸体实验，以评估在更实际的手术室环境中的可行性。
基于在锯骨上进行的实验结果，所提出的光投影仪方法在描绘所需截骨线方面比传统手动方法更准确，将角偏差从2.53毫米降低到0.35毫米，角度偏差从2.10°降低到0.31°，点偏差从4.66毫米降低到0.48毫米（p < 0.001）。尸体实验结果与锯骨实验结果一致。
新的投影仪方法可以在手术中准确地帮助外科医生直观地看到术前截骨线计划。
