Department of Orthopedics, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
Department of Mechanical Engineering, Amasya University, Amasya, Turkey.
Int J Med Robot. 2021 Aug;17(4):e2265. doi: 10.1002/rcs.2265. Epub 2021 Apr 20.
In this study, we aimed to compare the stability of traditional tension band wiring (TBW) and screw combined TBW (SC-TBW) fixation methods performed for a transverse olecranon osteotomy-fracture during different degrees of elbow movement by using finite element analysis.
Three-dimensional solid modeling of the olecranon was obtained by computed tomography images. Transverse olecranon fracture was created and fixed by TBW and SC-TBW with respect to triceps muscle force. Opening angle, twisting angle and interplanar translation occurring on the fracture line were evaluated at 45° and 90° elbow flexion.
Opening angle: 0.71°, 0.87° at 45° and 0.64°, 0.67° at 90° elbow flexion for TBW and SC-TBW, respectively. Twisting angle: -0.01°, -0.19° at 45° flexion and 0.19°, 0.30° at 90° flexion for TBW and SC-TBW, respectively. Interplanar translation: 1.93 mm, 4.65 mm at 45° flexion and 1.78 mm, 3.95 mm at 90° flexion for TBW and SC-TBW, respectively.
TBW fixation provides more stability than SC-TBW fixation model.
在这项研究中，我们旨在通过有限元分析比较在不同程度的肘部运动下，采用传统张力带钢丝固定（TBW）和螺钉联合 TBW（SC-TBW）固定治疗横断鹰嘴骨折的稳定性。
通过计算机断层扫描图像获得鹰嘴的三维实体模型。根据三头肌的力量，对鹰嘴进行横断骨折，并采用 TBW 和 SC-TBW 进行固定。在 45°和 90°的肘部弯曲下，评估骨折线上的开口角、扭转角和平面间平移。
开口角：TBW 和 SC-TBW 在 45°和 90°肘部弯曲下分别为 0.71°、0.87°和 0.64°、0.67°。扭转角：TBW 和 SC-TBW 在 45°弯曲下分别为-0.01°、-0.19°，在 90°弯曲下分别为 0.19°、0.30°。平面间平移：TBW 和 SC-TBW 在 45°弯曲下分别为 1.93mm、4.65mm，在 90°弯曲下分别为 1.78mm、3.95mm。
TBW 固定比 SC-TBW 固定模型提供了更高的稳定性。
