摘要
目的评价后路短节段内固定器Ｓｔｅｆｅｅ钢板、前路Ｋａｎｅｄａ器械、后路节段性钢丝固定哈氏撑开棒３种手术在植骨状态下，治疗脊柱爆裂骨折提供的生物力学稳定能力。方法利用传感器及电测技术，对１３例新鲜人体胸腰段脊柱标本，计算平均顺应系数。结果除节段性钢丝固定的哈氏撑开棒手术在旋转状态失稳外，３种手术在轴压、前屈、后伸、侧弯、旋转５种运动方式皆能提供满意的稳定性。结论Ｋａｎｅｄａ器械是治疗胸腰段爆裂骨折较为理想的脊柱内固定器械。
PURPOSE To Study the three-dimensional stability of the spine injuries (i.e.burst fracture) treated respectively by three kinds of internal fixations. METHODS Thirteen intact fresh cadaveric thoracolumbar specimens were measured by 3-degree of freedom electrogniometer force and displacement transducers. The mean flexibility was computed. The operative techniques included: ①The Steffee transpedicular screws and plates (Steffee); ② The Kaneda anterior device with transverse fixators (ST); ③Harrington distraction rod fixation supplemented with segmental sublaminar wires (s. Harrington), which all used with sturt bone graft. RESULTS These operative techniques could provide good stability in compressive loading, flexion, extension, lateral bending and rotation (excepts Harrington in rotation). CONCLUSIONS KT is a good spine implant in treating spinal burst fracture.
出处
《上海医科大学学报》
CSCD
1998年第3期171-173,共3页
Journal of Fudan University(Medical Science)
关键词
爆裂骨折
内固定器
稳定性
脊柱骨折
biomechnical testing
burst fracture
spine implants
spinal stability
