Department of Orthopaedics and Traumatology, Faculty of Medicine, Amasya University, Amasya, Turkey.
Department of Mechanical Engineering, Faculty of Engineering, Amasya University, Amasya, Turkey.
J Orthop Surg (Hong Kong). 2023 Sep-Dec;31(3):10225536231223109. doi: 10.1177/10225536231223109.
This study aimed to compare the biomechanical pull-out strength of the three different tension band wiring (TBW) methods employed to fix transverse olecranon fractures on bone models.
Three different fixation models were created in groups of seven synthetic olecranon fractured bone models. The first technique was fixed the olecranon with the traditional TBW method. The second technique was fixed the olecranon with a large intramedullary screw TBW method. The third technique was fixed the olecranon with the double-screw TBW method. The pull-out force needed for the failure of each specimen under the tensile test device was evaluated, and the results were recorded.
We found that the lowest average pull out strength was 55.10 N (range: 35.87-65.85 ± 10.17) in the traditional TBW method, the highest pull out strength was 84.28 N (range: 63.67-117 ± 18.87) in the double-screw TBW method. The pull out strength was 70.80 N (range: 52.60-80.95 ± 10.18) in the intramedullary screw TBW method. In terms of ultimate failure loads, there was no significant difference between the intramedullary screw TBW and the double-screw TBW ( > .05) while there was a significant difference between the traditional TBW and the other two methods ( < .05).
The use of screw(s) shows higher biomechanical stability than K-wires in the TBW method. Double-screws fixation gives similar results in terms of the biomechanical load to failure compared to a large intramedullary screw fixation. Both screw methods can be used as stable constructs in clinical practice.
III, biomechanical trial.
本研究旨在比较三种不同张力带钢丝固定（TBW）方法在骨模型上治疗横行尺骨鹰嘴骨折的生物力学拔出强度。
在七组合成尺骨鹰嘴骨折骨模型中创建了三种不同的固定模型。第一种技术是用传统的 TBW 方法固定尺骨鹰嘴。第二种技术是用大髓内螺钉 TBW 方法固定尺骨鹰嘴。第三种技术是用双螺钉 TBW 方法固定尺骨鹰嘴。在拉伸试验装置下评估每个标本失效所需的拔出力，并记录结果。
我们发现，传统 TBW 方法的平均拔出强度最低，为 55.10N（范围：35.87-65.85±10.17），双螺钉 TBW 方法的拔出强度最高，为 84.28N（范围：63.67-117±18.87）。髓内螺钉 TBW 方法的拔出强度为 70.80N（范围：52.60-80.95±10.18）。在最终失效载荷方面，髓内螺钉 TBW 与双螺钉 TBW 之间无显著差异（>.05），而传统 TBW 与其他两种方法之间有显著差异（<.05）。
与 K 线相比，螺钉的使用在 TBW 方法中显示出更高的生物力学稳定性。双螺钉固定在生物力学失效负荷方面与大髓内螺钉固定具有相似的结果。在临床实践中，两种螺钉方法都可以作为稳定的结构。
III 级，生物力学试验。
