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首页> 外文期刊>Acta Orthopaedica et Traumatologica Turcica >Biomechanical outcome of proximal femoral nail antirotation is superior to proximal femoral locking compression plate for reverse oblique intertrochanteric fractures: a biomechanical study of intertrochanteric fractures
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Biomechanical outcome of proximal femoral nail antirotation is superior to proximal femoral locking compression plate for reverse oblique intertrochanteric fractures: a biomechanical study of intertrochanteric fractures

机译：股骨近端钉抗旋转的生物力学结果优于股骨近端锁定加压钢板治疗股骨粗隆间反向骨折的生物力学研究：股骨粗隆间骨折的生物力学研究

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Objective: Reverse obliquity intertrochanteric fractures are a challenge for orthopedic surgeons. The optimal internal fixation for repairing this type of unstable intertrochanteric fractures remains controversial. This study aimed to compare the biomechanical properties in axial load and cyclical axial load of proximal femoral nail antirotation (PFNA) and proximal femoral locking compression plate (PFLCP) for fixation of reverse obliquity intertrochanteric fractures. Methods: Sixteen embalmed cadaver femurs were sawed to simulate reverse obliquity intertrochanteric fracture and instrumented with PFNA or PFLCP. Axial loads and axial cyclic loads were applied to the femoral head by an Instron tester. If the implant-femur constructs did not fail, axial failure load was added to the remaining implant-femur constructs. Results: Mean axial stiffness for PFNA was 21.10% greater than that of PFLCP. Cyclic axial loading caused significantly less (p=0.022) mean irreversible deformation in PFNA (3.43 mm) than in PFLCP (4.34 mm). Significantly less (p=0.002) mean total deformation was detected in PFNA (6.16 mm) than in PFLCP (8.67 mm). Conclusion: For fixing reverse obliquity intertrochanteric fractures, PFNA is superior to PFLCP under axial load. DOI: 10.3944/AOTT.2015.14.0306
机译：目的：倒斜转子间骨折是整形外科医师的一个挑战。修复这种类型的不稳定的转子间骨折的最佳内固定仍然存在争议。这项研究的目的是比较股骨近端防旋转（PFNA）和股骨近端锁定加压钢板（PFLCP）的轴向负荷和周期性轴向负荷的生物力学性能，以固定反倾角转子间骨折。方法：锯切16具防腐处理的尸体股骨，以模拟股骨转子间倾斜倒转骨折，并用PFNA或PFLCP进行检测。通过Instron测试仪将轴向载荷和轴向循环载荷施加到股骨头上。如果植入物股骨结构没有失效，则将轴向失效载荷添加到其余的植入物股骨结构中。结果：PFNA的平均轴向刚度比PFLCP高21.10％。循环轴向载荷在PFNA（3.43 mm）中引起的平均不可逆变形（P = 0.022）明显少于PFLCP（4.34 mm）。与PFLCP（8.67 mm）相比，PFNA（6.16 mm）的平均总变形明显较少（p = 0.002）。结论：对于固定后倾斜转子间骨折，在轴向载荷下，PFNA优于PFLCP。 DOI：10.3944 / AOTT.2015.14.0306

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