在骨质疏松状骨模型中,Jamshidi针和踏脚探头技术之间的踏脚螺丝拉出强度:生物机械研究
Shival Tharmaseelan1, Mohd Hezery Harun1, Fadzrul Abbas Mohamed Ramlee1
1Orthopaedics and Traumatology, Universiti Putra Malaysia, Kuala Lumpur, MYS.
Cureus
|December 30, 2024
概括
脚探针技术在骨质疏松性骨模型中提供了优越的螺丝固定强度,与Jamshidi针技术相比. 然而,Jamshidi针技术提供了更好的抗变形,突出了脊柱融合手术中的权衡.
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
- 脊柱生物力学 脊柱生物力学
背景情况:
- 用脚螺丝进行脊柱融合手术对于稳定骨质疏松性脊柱至关重要.
- 骨质疏松症的骨密度降低对安全的螺丝固定提出了挑战.
- 对比插入技术对于改善这些患者的外科治疗结果至关重要.
研究的目的:
- 在骨质疏松骨模型中,通过Jamshidi针插入的脚螺丝的生物力学性能与脚探头技术进行比较.
- 为了评估点击对两种插入技术的螺丝固定的影响.
- 为了确定手术器件在骨质疏松症条件下对螺丝稳定性的影响.
主要方法:
- 使用聚氨泡模型模拟骨质疏松性骨 (10级) 的体外生物机械研究.
- 用四种技术插入脚螺丝:jamshidi针,jamshidi针用敲击,脚探头和脚探头用敲击.
- 使用材料测试系统 (MTS) 810机器测量了轴向拉出强度,轴向刚度和失效位移.
主要成果:
- 与Jamshidi针技术 (557.15 N,1.18 mm) 相比,脚探针技术显示出明显更高的拉出强度 (698.36 N) 和位移到故障 (2.26 mm).
- 贾姆希迪针技术的轴心刚度 (336.88 N/mm) 比脚探针技术 (208.82 N/mm) 高得多.
- 敲击显著降低了拉出强度和移位到失败的脚探头技术.
结论:
- 脚探头技术在骨质疏松性骨模型中提供了增强的初始稳定性.
- 贾姆希迪针技术提供了优越的抗变形能力,由更高的轴度表明.
- 触摸需要仔细考虑,特别是在脚探头技术中,由于螺丝固定强度降低.
相关概念视频
01:40Bone Remodeling
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
01:16Bones of the Lower Limb: Femur and Patella
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...
01:10Bones of the Lower Limb: Tibia and Fibula
The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...