椎弓根螺钉固定加横突间植骨治疗退变性腰椎失稳

目的 观察椎弓根螺钉固定加横突间植骨治疗退变性腰椎失稳的早期临床疗效。方法 2000年9月～2002年2月，采用后路减压、椎弓根螺钉-棒系统复位固定加横突间植骨治疗退变性腰椎失稳19例，男5例，女14例，年龄47～68岁。病变节段L4～510例，乙3～43例，L5～S12例，L3～4、L4～54例。术后随访自行拟定下列标准评价临床疗效：优：症状完全消失；良：症状明显改善；可：症状好转；差：症状无改善或加重。结果 术后17例获得4～18个月(平均8．1个月)随访，结果：优12例、良4例、可1例，优良率94．1％。术后6个月均获得植骨融合，有骨桥形成，无内植物松动断裂。结论 采用椎弓根螺钉固定加横突间植骨治疗退变性腰椎失稳，具有复位固定优良、对椎管干扰小及易获得植骨融合等优点，近期临床疗效满意。

TREATMENT OF DEGENERATIVE LUMBAR SPINE INSTABILITY WITH TRANSPEDICAL SCREW FIXATION AND INTERTRANSVERSE PROCESS AUTOGENOUS BONE GRAFTING

Objective To observe the early clinical results with degenerative lumbar instability treated with transpedical screw fixation and intertransverse process autogenous bone grafting. Methods From September 2000 to February 2002, 19 patients (5 males and 14 females) of degenerative lumbar spine instability were treated with decompression for spinal canal stenosis, transpedical screw fixation and intertransverse process autogenous bone grafting. The locations of degenerative lumbar spine instability were between L 4 and L 5 in 10 patients, between L 3, L 4 and L 5 in 4 cases, between L 3 and L 4 in 3 cases, between L 5 and S 1 in 2 cases. The results were evaluated after operation. The preoperative clinical symptoms disappeared completely as excellent results, relieved obviously as good results, improved as fair results and unrelieved or worsened as poor results. Results Seventeen patients were followed up for 4-18 months with an average of 8.1 months. The results of the treatment were excellent in 12 patients, good in 4 patients and fair in 1 patient. The excellent and good rate was 94.1%. Intertransverse process arthrodesis was obtained after 6 months of operation in all cases. No loosened and broken instruments occurred. Conclusion The advantages of degenerative lumbar spine instability treated with transpedical screw fixation and intertransverse are reliable fixation, high successful rate of fusion and less influence on spinal canal. The above results show satisfactory clinical outcome.