摘要
目的 :在Kaneda器械的基础上研制一种新型胸腰椎前路复位固定装置ARF(anteriorreductionfixation) ,以增加器械自身复位和压缩能力并方便操作。方法 :通过人尸体脊柱离体生物力学试验 ,了解ARF的稳定能力和载荷屈服强度。在此基础上ARF临床应用 6例。结果 :ARF在前屈和左侧弯方向上稳定性大于Kaneda(P <0 0 1) ,在前屈方向上低于AF(P <0 0 1) ,其余方向与两者无显著性差别 (P >0 0 5 ) ;ARF在所有方向上大于完整对照组 (P<0 0 1)。ARF平均屈服强度 (M ) 6 5 7 3公斤。临床应用早期结果 :5例椎体塌陷者基本恢复了椎体正常高度和脊柱生理弯曲 ,无神经功能恶化。结论 :ARF稳定性好 ,复位和加压能力强 ,操作方便 ,临床实用可行。
Objective:A new implant device ARF(anterior reduction fixation) has been designed to improve the functions of reduction and compression and to be installed easily in response to the Kaneda.Method:The stability and the yield strength provided by the ARF device have been studied in a biomechanical model of fresh cadaveric thoracolumbar specimens.The ARF was used in 6 patients.Result:The ARF proved stiffer than the Kaneda in flexion,left lateral bending,intact in all directions( P <0 01),and it was proved less stiff than the AF in flexion.The average yield strength(M) of the ARF was 657 3kg.The early clinical results showed that five patients with verteberal body fracture had a anatomic reduction by the ARF and none had neurological deterioration after fixation.Conclusion:The ARF provides powerful reduction and compression and the installation is easy.The design is functional.
出处
《中国脊柱脊髓杂志》
CAS
CSCD
2000年第6期326-329,共4页
Chinese Journal of Spine and Spinal Cord
关键词
胸腰椎
内固定器
生物力学
研制
评价
Thoracolumber vertebrea
Internal fixator
Biomechanics
