CAJ | 학술논문

目的：比较两种椎间融合方式，即后路椎间融合术（ PLIF ）、椎间孔入路椎间融合术（ TLIF）术后的生物力学差异。方法：选取15具新鲜家猪腰椎标本，随机分为3组，每组5个标本，模拟临床手术方式行PLIF、TLIF，在微机控制电子万能实验机上测试其生物力学特性。结果：与正常对照组相比，PLIF组和TLIF组的前屈后伸方向的抗弯强度明显增强，有统计学差异，P＜0．05；实验组间无统计学差异。两试验组与对照组之间轴向应力没有统计学差异，而相应的抗扭转强度则有所减弱，有统计学差异，P＜0．05。实验组间，TLIF组的抗扭转强度强于PLIF组，有统计学差异，P＜0．05。结论：经PLIF、TLIF术后，腰椎的稳定性均有所下降。在屈伸、旋转运动状况下，PLIF组和TLIF组稳定性减弱，但在左右侧弯、轴向刚度的变化上，与正常对照组差别不大。 TLIF组抗扭转强度强于PLIF组。
목적：비교량충추간융합방식，즉후로추간융합술（ PLIF ）、추간공입로추간융합술（ TLIF）술후적생물역학차이。방법：선취15구신선가저요추표본，수궤분위3조，매조5개표본，모의림상수술방식행PLIF、TLIF，재미궤공제전자만능실험궤상측시기생물역학특성。결과：여정상대조조상비，PLIF조화TLIF조적전굴후신방향적항만강도명현증강，유통계학차이，P＜0．05；실험조간무통계학차이。량시험조여대조조지간축향응력몰유통계학차이，이상응적항뉴전강도칙유소감약，유통계학차이，P＜0．05。실험조간，TLIF조적항뉴전강도강우PLIF조，유통계학차이，P＜0．05。결론：경PLIF、TLIF술후，요추적은정성균유소하강。재굴신、선전운동상황하，PLIF조화TLIF조은정성감약，단재좌우측만、축향강도적변화상，여정상대조조차별불대。 TLIF조항뉴전강도강우PLIF조。
Objective: To compare the biomechanical differences of two interbody fusion methods in postoperative, namely, posterior lumbar interbody fusion ( PLIF) and transforaminal interbody fusion ( TLIF) .Method: 15 fresh pig lumbar spine specimens were randomly divided into three groups ( control group,PLIF group and TLIF group).There were five specimens in every group .PLIF group and TLIF group were used to simuLate clinical surgical to test their biomechanical properties with the electronic testing ma -chine controlled by computer .Result: Compared with control group , the mean flexion stiffness of TLIF group and PLIF group was significantly increased , P<0.05; there was no significant difference between the experimental groups .The axial stress between the two experimental groups and control group was no statisti-cally significant.But the corresponding torsional strength weakened significantly , P<0.05.In the experimen-tal groups, the torsional strength of TLIF group was stronger than the PLIF group , P<0.05.Conclusion:The stability of the lumbar spine has declined after the surgery of PLIF and TLIF .Inflexion, rotation situation , the stability of PLIF group and TLIF group weakened;but in lateral bending and axial stiffness , little differ-ence with the control group .The torsional strength of TLIF group is stronger than the PLIF group .