Liu Kexin, Li Zitao, Ma Yubo, Lian Hongyu
Orthopedics Surgery Department 2, Affiliated Hongqi Hospital, Mudanjiang Medical University, Mudanjiang, Heilongjiang 157000, P.R. China.
Exp Ther Med. 2020 Feb;19(2):1155-1160. doi: 10.3892/etm.2019.8332. Epub 2019 Dec 16.
Developmental dysplasia of the hip (DDH) is a congenital or developmental deformation of the hip joint, which may require a high number of surgical interventions. It has been indicated that 3D printing may be used to simulate a fractured pelvis to facilitate the fixation of plates during the surgical procedure. In the present double-blinded randomized clinical trial, the utility of the 3D-printed pelvis model, comprising 3D reconstruction, reverse engineering and rapid prototyping, in the treatment of DDH was evaluated with 3D CT as control. The value of the 3D-printed pelvis model in the surgical management and development of a strategy for an individualized operation for DDH using osteotomy simulation was also assessed. The results indicated that use of the 3D-printed pelvis model increased the success rate of the operation with a shortened surgery time and post-operative recovery time for DDH patients. In addition, the application of the 3D-printed pelvis model allowed for more efficient surgical management of DDH than 3D CT and promoted post-operative recovery of the DDH patients. Pre-operative planning using the 3D-printed pelvis model was feasible for DDH patients. Furthermore, few patients exhibited delayed incision healing, wound infection or nonunion in the DDH group with osteotomy simulation using the 3D-printed pelvis model or 3D-CT. In conclusion, the present study indicated that the 3D-printed pelvis model, including 3D reconstruction, reverse engineering and rapid prototyping, constitutes an efficient tool for pelvic osteotomy simulation, which improves personalized pre-operative planning by providing a visual and accurate osteotomy model for patients with DDH (Chinese Trial Registry No. KCT0012374).
发育性髋关节发育不良（DDH）是一种先天性或发育性的髋关节畸形，可能需要进行大量的手术干预。已有研究表明，3D打印可用于模拟骨盆骨折，以在手术过程中便于钢板固定。在本双盲随机临床试验中，以3D CT为对照，评估了包含3D重建、逆向工程和快速成型的3D打印骨盆模型在DDH治疗中的效用。还评估了3D打印骨盆模型在手术管理以及使用截骨模拟为DDH患者制定个体化手术策略方面的价值。结果表明，使用3D打印骨盆模型提高了手术成功率，缩短了DDH患者的手术时间和术后恢复时间。此外，与3D CT相比，3D打印骨盆模型的应用使DDH的手术管理更高效，并促进了DDH患者的术后恢复。使用3D打印骨盆模型进行术前规划对DDH患者是可行的。此外，在使用3D打印骨盆模型或3D CT进行截骨模拟的DDH组中，很少有患者出现切口愈合延迟、伤口感染或骨不连。总之，本研究表明，包括3D重建、逆向工程和快速成型的3D打印骨盆模型是骨盆截骨模拟的有效工具，通过为DDH患者提供可视化且准确的截骨模型，改善了个性化术前规划（中国试验注册编号：KCT0012374）。
