与干扰螺丝固定相比,双环拉索技术的双环拉索技术在循环加载后具有较低的位移:在绵羊模型中的生物力学分析
Bryon Jx Teo1, Andy Yew1, Marcus Wei Ping Tan1
1Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.
Shoulder & elbow
|November 20, 2023
概括
双拉索循环接 anchor (DLSA) 技术用于 biceps tenodesis 显示出比干扰螺丝 (IS) 较低的初始位移. 虽然IS构造更强大,但DLSA是可行的替代方案,因为它具有非生物机械的好处.
科学领域:
- 整形外科手术 整形外科手术
- 生物医学工程 生物医学工程
- 运动医学 运动医学
背景情况:
- 双肩肌治疗有效地治疗双肩肌病理的长头.
- 关节镜双拉索环接 (DLSA) 技术可降低成本,复杂性和操作时间.
- 这项研究比较了DLSA与传统干扰螺丝 (IS) 的体外生物力学强度.
研究的目的:
- 为了比较DLSA技术的体外生物力学强度与双肩形的常规干扰螺丝 (IS).
- 为了评估两个固定方法的循环负荷和最终故障负荷 (UFL).
主要方法:
- 对14只绵羊肩 (8 DLSA,6 IS) 进行了生物机械分析.
- 样品经过500周期循环负荷测试 (5-70N) 和最终故障负载 (UFL) 测试.
- 记录了移位,硬度和UFL.
主要成果:
- DLSA在100个循环时表现出明显较低的循环位移.
- 干扰螺丝 (IS) 显示出更大的刚度 (27.68 ± 6.56 N/mm 与 14.10 ± 5.80 N/mm 相比) 和更高的UFL (453.67 ± 148.55 N 与 234.22 ± 44.57 N 相比).
- DLSA故障发生在接/杆拉出方面,而IS结构在肌肉/肌方面失败.
结论:
- 该DLSA技术显示承诺作为一个可行的替代方案,两肌,尽管较低的最终故障负载相比IS.
- DLSA提供了潜在的非生物力学优势,例如降低成本和复杂性.
- 需要进一步的临床评估来确认DLSA在实践中的有效性.
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