逆行交锁髓内钉与微创内固定钢板修复股骨远端骨折的生物力学性能比较.doc

逆行交锁髓内钉与微创内固定钢板修复股骨远端骨折的生物力学性能比较 张慧东，王井伟，白 净(唐山市工人医院骨二科，河北省唐山市 063000) 引用本文：张慧东，王井伟，白净. 逆行交锁髓内钉与微创内固定钢板修复股骨远端骨折的生物力学性能比较[J].中国组织工程研究，2016，20(44):6577-6582. DOI: 10.3969/j.issn.2095-4344.2016.44.006 ORCID: 0000-0002-9846-5740(张慧东) 文章快速阅读： 文题释义： 微创内固定系统(LISS)钢板逆行交锁髓内钉Biomechanical properties of retrograde interlocking intramedullary nail versus less invasive stabilization system plate in the repair of distal femoral fractures Zhang Hui-dong, Wang Jing-wei, Bai Jing (Second Department of Orthopedics, Tangshan Gongren Hospital, Tangshan 063000, Hebei Province, China) Abstract BACKGROUND: Distal femoral fractures are mainly treated with less invasive stabilization system (LISS) plate or retrograde interlocking intramedullary nail fixation, but choosing which method is controversial, and studies on their biomechanical properties are few. OBJECTIVE: To compare the biomechanical stability of retrograde interlocking intramedullary nail and LISS plate fixation in the treatment of distal femoral fractures. METHODS: Twelve male cadaveric femurs were collected, and the injured, with abnormal bone density and osteonosus specimens were excluded through X-ray examination, followed by randomly divided into two groups. Models of AO type A3 supracondylar fracture were prepared, and were fixed with LISS plate and retrograde interlocking intramedullary nail, respectively. The compressive stiffness and displacement values under axial compression and loading of 100, 300 and 500 N, as well as the bending strength of the specimens under bending load were observed. RESULTS AND CONCLUSION: (1) The resistance to axial deformation capacity (compressive stiffness) of the LISS plate was superior to the retrograde interlocking intramedullary nail (P 0.05); while the resistance to bending deformation capacity (flexural strength) of the retrograde interlocking intramedullary nail was not significantly greater than that of the LISS plate (P 0.05). (2) Under axial