Çakın Hakan, Yildirim Yilmaz, Ozsoy Umut
Department of Brain and Neurological Surgery, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
Department of Anatomy, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
World Neurosurg. 2024 Feb;182:100-104. doi: 10.1016/j.wneu.2023.11.076. Epub 2023 Nov 22.
Although personalized polymethylmethacrylate (PMMA) implant production molds for cranioplasty are costly and time-consuming, they allow for better-quality implants. The researchers quantitatively tested the contribution of simplified, low-cost techniques to cosmetic improvement.
PMMA prosthesis was placed in a 25-year-old male patient due to osteolysis in the bone flap removed after decompression surgery. A single-sided mold was three-dimensional (3D) printed before the surgery, and the prosthesis was produced during the surgery. In addition, the change in cranial asymmetry was evaluated using a 3D surface scanner after surgery.
The mold took half an hour to design and 5 hours to print. The mold cost about 2 dollars. The root means square (RMS) value measured to determine cranial asymmetry decreased from 5.4 mm to 2.8 mm postoperatively. The patient stated that he was pretty satisfied with the cosmetic result.
Simple design techniques developed can offer low-cost, fast-design alternative solutions with satisfactory cosmetic results for low-income countries and patients.
尽管用于颅骨修补术的个性化聚甲基丙烯酸甲酯（PMMA）植入物生产模具成本高昂且耗时，但它们能制造出质量更好的植入物。研究人员定量测试了简化的低成本技术对改善外观的作用。
由于减压手术后骨瓣出现骨质溶解，为一名25岁男性患者植入了PMMA假体。术前通过三维（3D）打印制作了单侧模具，并在手术过程中制造了假体。此外，术后使用3D表面扫描仪评估颅骨不对称性的变化。
模具设计耗时半小时，打印耗时5小时。模具成本约为2美元。用于确定颅骨不对称性的均方根（RMS）值术后从5.4毫米降至2.8毫米。患者表示对美容效果非常满意。
所开发的简单设计技术可为低收入国家和患者提供低成本、快速设计的替代解决方案，且美容效果令人满意。
