Biomechanical evaluation of the aliform memory alloy intrasegmental fixation instrument for lumbar spondylolysis
SHU Li-Xin, LI Shan-Hui, SONG Qin-Yong, HUANG Han-Qing, CAO Yan-Lin, ZHANG Xi-Bing
Chinese Journal of Clinical Anatomy ›› 2013, Vol. 31 ›› Issue (3) : 332-336.
Biomechanical evaluation of the aliform memory alloy intrasegmental fixation instrument for lumbar spondylolysis
Objective To evaluate the biomechanical properties of the aliform memory alloy intrasegmental fixation instrument (AMAIFI) for lumbar spondylolysis. Methods L4/5 functional spinal units from 8 fresh pig cadavers were used in the test, which were grouped into: the normal spine group, the lumbar spondylolysis group, the Buck's screw group, the Nicol's wire fixation group and the aliform memory alloy the intrasegmental fixation group. The movement range of each group was measured under the kinetic state of flexion/extension, left/right lateral bending, and left/right axial rotation. Results Under the state of flexion/extension and left/right axial rotation, the stability of the lumbar spondylolysis group was the worst，and had a significant difference with the other groups (P<0.05). The stability of spondylolysis lumbar could be restored distinctly in the group fixed with AMAIFI, and had no significant difference with the normal spine group and the other 2 intrafixation groups (P>0.05). Under the state of the left/right lateral bending，there was no significant difference among the various groups (P>0.05). Conclusions The newly designed AMAIFI can restore the stability of spondylolysis lumbar with its operationf; Consequently, it can be assumed hat AMAIFI has a better application in the future.
Lumbar spondylolysis; / Memory alloy; / Intrasegmental fixation; / Biomechanics
[1] 杨建东,贾连顺,李家顺,等. 峡部植骨治疗单纯腰椎椎弓峡部裂
[J].中国矫形外科杂志, 2004, 12(6):410-411.
[2] Buck JE．Direct repair of the defect in spondylolisthesis:Preliminary report
[J]．J Bone Joint Surg Br,1970,52(3):432-437.
[3] Nicol RO, Scott JHS. lytic spondylolysis:repair by wiring
[J]. Spine,1986, 11(10): 1027-1030.
[4] Hefti F, Seelig W, Morscher E．Repair of lumbar spondylolysis with a hook-screw
[J]. Internal Orthop,1992, 16(1):81-85．
[5] 张西兵,朱立新,王健,等.腰椎峡部裂机翼型记忆合金节段内固定器研制的解剖学基础
[J].中国临床解剖学杂志, 2011, 29(4):407-410.
[6] 张效三,周初松,靳安民,等.新型记忆合金节段内固定器治疗腰椎峡部裂的实验研究
[J].中国矫形外科杂志, 2004, 12(16):1243-1246.
[7] WilkeI U, Wenger K, Claes L. Testing criteria for spinal implants: recommendations for the standardization of in vitro stability testing of spinal implants
[J]. J Eur Spine,1998,7(2):148-154.
[8] Ohmori K, Suzuki K, Ishida Y. Translamino-pedicular screw fixation with bone grafting for symptomatic isthmic lumbar spondylolysis
[J]. Neurosurgery,1992, 30(3): 379-384.
[9] Johnson GV, Thompson AG. The Nicol wiring technique for direct repair of lumbar spondylolysis
[J]. J Bone Joint Surg Br, 1992, 74(3): 426-430.
[10] Adelt D, Samani J, Kim WK, et al. Coflex interspinous stabilization：Clinical and Radiographic results from an international multicenter retrospective study
[J]. Paradigm Spine Journal, 2007,1(1):1-4.
[11] 赵剑,王友华,樊建,等.青年性腰椎弓崩裂直接修复后钩钉固定的生物力学实验与临床应用研究
[J].中华创伤杂志, 2006, 22(5):348-352.
[12] 刘晖,何明长,林斌,等.腰椎峡部裂对上位脊椎稳定性影响的生物力学研究
[J].中国脊柱脊髓杂志, 2009, 19(10):745-747.
/
| 〈 |
|
〉 |
