颈椎稳定性的生物力学实验研究.pdf

∀ ∀ ∀ , 257 颈椎稳定性的生物力学实验研究 1 2 3 姜 宏 施 杞 王以进 : : 5 ( C ~ C ) C , , 1 7 5~ 6 C C C : C C C , 4 5 6 4 5 6 ; , C C C : 4 5 6 , , Anexperimental biomechanical study on the stabilization of cervical vertebrae/JIANG Hong SHI Qi ANGYijin// ChineseJournal of Spine and SpinalCord,1999,9(5):257~ 259 Abstract Objective:Evaluate t he impact of various cervical vertebrae movi g posit io s before a d after diskectomy o the stabilizatio of cervical vertebrae. Method:Five fresh spi al specime s from C ~ C were 1 7 used to establish ormal a d diskectomy models. The cervical vertebrae w ere observed u der differe t movi g positio s.The strai of C , C a d C cha ges i displaceme t as well as overall displaceme t were studied. Re 4 5 6 sult: The strai of ormal cervical vertebrae C , C a d C reduced accordi gly, a d the cervical vertebrae over 4 5 6 all displaceme t maximized i the lateral be di g posit io . After diskectomy, both the strai of C , C a d C 4 5 6 a d axial displaceme t i creased obviously. Conclusion:The stabilizatio of lower cervical vertebrae i creased accordi gly a d the stabilizatio decreased after diskectomy. Differe t movi g positio s have differe t impact o the stabilizatio of cervical vertebrae.The u stable situatio happe s most easily whe the cervical vertebrae is i lateral be di g positio . Patie ts of cervical spo dyl