Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
J Orthop Surg Res. 2021 Sep 3;16(1):545. doi: 10.1186/s13018-021-02691-0.
Distal humerus fractures (DHFs) constitute one-third of elbow fractures approximately. In this study, we aim to define and analyze the fracture lines and morphological features of DHFs using mapping technique.
One hundred and two DHFs were retrospectively reviewed. All the computed tomography (CT) data were used to manually reconstruct and virtually reduce the DHF fragments to fit a standard 3D model. Smooth curves were depicted accurately onto the surface of the template to represent the fracture lines. All the curves were overlapped onto the model to create the 3D fracture map and heat map.
Our analysis was based on 102 CT images of DHFs, contributed by 59 male and 43 female patients (mean age, 46 years; range, 18-93 years), and included 15 type A, 25 type B, and 62 type C fractures. On mapping, the hot zones were located in the radial fossa, coronoid fossa, olecranon fossa, and the external part of the trochlear. Conversely, the cold zones were noted in medial condyle, the medial side of the trochlear, and the anterolateral area on the supracondylar ridge.
Our study firstly shows the fracture lines and morphological features of distal humeral fractures by three-dimensional mapping technology. Distal humerus fracture lines are characteristic and highly related to the micro-architecture difference of distal humerus, which may provide some guidance for the treatment plan selection and surgical fixation design.
肱骨远端骨折（DHF）约占肘部骨折的三分之一。在本研究中，我们旨在使用映射技术定义和分析 DHF 的骨折线和形态特征。
回顾性分析 102 例 DHF。所有 CT 数据均用于手动重建和虚拟还原 DHF 碎片，以拟合标准 3D 模型。在模板表面上精确绘制平滑曲线以表示骨折线。将所有曲线重叠到模型上，以创建 3D 骨折图和热图。
我们的分析基于 102 例 DHF 的 CT 图像，由 59 名男性和 43 名女性患者（平均年龄 46 岁；范围，18-93 岁）提供，包括 15 例 A 型、25 例 B 型和 62 例 C 型骨折。在映射中，热点位于桡骨窝、冠状突窝、鹰嘴窝和滑车外部分。相反，冷区位于内髁、滑车内侧和髁上嵴前外侧区域。
我们的研究首次通过三维映射技术显示了肱骨远端骨折的骨折线和形态特征。肱骨远端骨折线具有特征性，与肱骨远端微观结构差异密切相关，这可能为治疗方案选择和手术固定设计提供一些指导。
