Guo Zhanpeng, Guo Yue, Wang Yansong, Bi Yunlong, Deng Yu, Cao Yang, Huang Mina
Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China.
School of Nursing, Jinzhou Medical University, Jinzhou, China.
J Orthop Surg Res. 2024 Jul 17;19(1):410. doi: 10.1186/s13018-024-04905-7.
The minimally invasive approach for the treatment of displaced scapular neck or body fractures has the advantages of less trauma and minimal muscle dissection. In clinical practice, the minimally invasive approach combined with an anatomical locking plate has been used to treat scapular body fractures. In addition, we have made minor modifications to the minimally invasive approach. However, the biomechanical study about the approach combined with an anatomical locking plate in treating scapular body fractures was limited.
Finite element analysis (FEA) was used to conduct the biomechanical comparison between the anatomical locking plate (AP model) and reconstructive plate (RP model) in the treatment of scapular body fractures through the modified minimally invasive approach. A healthy male volunteer with no history of scapula or systemic diseases was recruited. High-resolution computed tomography images of his right scapula were obtained. Two scapula models were constructed and analyzed by the software of Mimics 21.0, Geomagic Wrap 2021, SolidWorks 2021, and ANSYS Workbench 2022, respectively.
Through static structural analysis, in terms of equivalent von Mises stress, equivalent elastic strain, and total deformation, the AP model exhibited superior safety characteristics, enhanced flexibility, and anticipated stability compared with the RP model. This was evidenced by lower maximum stress, lower maximum strain and displacement.
The minimally invasive approach combined with an anatomical locking plate for scapular body fractures had better biomechanical stability. The study provided a biomechanical basis to guide the clinical treatment of scapular body fractures.
治疗移位的肩胛颈或肩胛体骨折的微创方法具有创伤小和肌肉剥离最少的优点。在临床实践中，微创方法联合解剖锁定钢板已被用于治疗肩胛体骨折。此外，我们对微创方法进行了一些小的改进。然而，关于该方法联合解剖锁定钢板治疗肩胛体骨折的生物力学研究有限。
采用有限元分析（FEA）对通过改良微创方法治疗肩胛体骨折时的解剖锁定钢板（AP模型）和重建钢板（RP模型）进行生物力学比较。招募一名无肩胛骨或全身性疾病史的健康男性志愿者。获取其右肩胛骨的高分辨率计算机断层扫描图像。分别使用Mimics 21.0、Geomagic Wrap 2021、SolidWorks 2021和ANSYS Workbench 2022软件构建并分析两个肩胛骨模型。
通过静态结构分析，在等效应力、等效弹性应变和总变形方面，与RP模型相比，AP模型表现出更好的安全性、更高的柔韧性和预期的稳定性。这通过更低的最大应力、更低的最大应变和位移得到证明。
微创方法联合解剖锁定钢板治疗肩胛体骨折具有更好的生物力学稳定性。该研究为指导肩胛体骨折的临床治疗提供了生物力学依据。
