下颌骨缺损会极大地影响患者的外观和功能。解决这个问题的首选方法是使用腓骨瓣进行重建手术。目前的个性化导板可以提高截骨重建的准确性，但仍存在设计过程复杂、耗时等问题。因此，我们对传统模板进行了改造，以达到引导下颌骨和腓骨截骨和方便预弯钛合金放置的双重目的。术前利用计算机辅助设计（CAD）技术对手术进行模拟。模板和可截断重建模型是在实验室使用 3D 打印制作的。将钛板按照轮廓预弯后，截断重建模型并传输螺钉轨迹，形成改良截骨定位一体化模板系统（MOPITS）。接下来，患者接受了复合模板引导下带血管腓骨瓣重建下颌骨。回顾所有病例的总手术时间和手术准确性。15例患者手术涉及2-4个腓骨节段，平均每次手术涉及3个腓骨节段。截骨误差为1.01±1.02毫米，重建角度误差为1.85±1.69°。术前、术后数据比较，均p≥0.05。同一手术中，对4名患者进行了种植体植入，平均手术时间为487.25±60.84分钟。其余恶性肿瘤患者的平均手术时间为397.18±73.09分钟。术后平均住院时间为 12.95±3.29 天。这项研究证明了 MOPITS 在促进腓骨瓣重建的精确术前计划和术中执行方面的有效性。 MOPITS 代表了一种有前途且可靠的重建手术工具，特别是对于经验不足的外科医生来说，应对下颌骨缺损重建的挑战。© 2023。作者。

Mandibular defects can greatly affect patients' appearance and functionality. The preferred method to address this issue is reconstructive surgery using a fibular flap. The current personalized guide plate can improve the accuracy of osteotomy and reconstruction, but there are still some problems such as complex design process and time-consuming. Therefore, we modified the conventional template to serve the dual purpose of guiding the mandible and fibula osteotomy and facilitating the placement of the pre-bent titanium.The surgery was simulated preoperatively using Computer-Aided Design (CAD) technology. The template and truncatable reconstruction model were produced in the laboratory using 3D printing. After pre-bending the titanium plate according to the contour, the reconstruction model was truncated and the screw trajectory was transferred to form a modified osteotomy and positioning integrative template system (MOPITS). Next, the patient underwent a composite template-guided vascularized fibula flap reconstruction of the mandible. All cases were reviewed for the total operative time and accuracy of surgery.The procedures involved 2-4 fibular segments in 15 patients, averaging 3 fibular segments per procedure. The osteotomy error is 1.01 ± 1.02 mm, while the reconstruction angular error is 1.85 ± 1.69°. The preoperative and postoperative data were compared, and both p > 0.05. During the same operation, implant placement was performed on four patients, with an average operative time of 487.25 ± 60.84 min. The remaining malignant tumor patients had an average operative time of 397.18 ± 73.09 min. The average postoperative hospital stay was 12.95 ± 3.29 days.This study demonstrates the effectiveness of MOPITS in facilitating precise preoperative planning and intraoperative execution of fibula flap reconstruction. MOPITS represents a promising and reliable tool for reconstructive surgery, particularly for inexperienced surgeons navigating the challenges of mandible defect reconstruction.© 2023. The Author(s).