USS Schanz系统在腰椎滑脱中的治疗作用

The universal spine system Schanz system in the treatment of lumbar spondylolisthesis

目的 分析USSSchanz系统治疗腰椎滑脱症的临床疗效。方法 34例腰椎滑脱症患者采用USSSchanz系统行后路减压植骨内固定术。植骨方式 :横突间植骨 5例、椎体间植骨 7例、椎体间Cage植骨融合 6例和关节突植骨融合 16例 (含峡部裂型间隙植骨 7例 )。滑脱Meyerding分型 :Ⅰ度 2 0例 ,Ⅱ度 11例 ,Ⅲ度 3例。滑脱部位 :L3 ,44例 ,L4,516例 ,L5～S114例。结果 术后随访 6～ 2 3个月 (平均为 11个月 ) ,症状完全消失 11例 ,好转 2 0例 ,无明显变化 2例 ,1例症状有加重感。滑脱完全复位 2 3例 ,未出现复位丢失现象。有2例在术后 6个月时出现螺钉松动 ,但患者无明显不适 ,未出现钉、棒断裂现象。结论 USSSchanz系统治疗腰椎滑脱具有操作简便、复位效果好、植骨融合率高及固定可靠的优点 。

Objective To analyse the efficacy of universal spine system(USS) Schanz system in the treatment of lumbar spondylolisthesis. Methods Thirty-four patients with lumbar spondylolisthesis were treated by posterior decompression, autograft bone fusion and internal fixation. Autograft styles included intertransverse bone graft in 5 cases, interbody graft in 7 cases, Cages graft in 6 cases and inter-articular graft in 16 cases(including 7 cases of isthmic spondylolisthesis) with interbody and inter-aticular fusion. Meyerding styles: degree Ⅰ in 20 cases, degree Ⅱ in 11 cases, degree Ⅲ in 3 cases. The lesion sites: 4 cases in L 3,4, 16 cases in L 4,5 and 14 cases in L 5～S 1. Results The follow-up period was 6 to 23 months (mean 11 months). Symptoms in 11 cases disappeared, 20 cases improved, 2 cases had no change, 1 case got aggravation. 23 cases got complete restoration. Screw looseness happened in 2 cases in 6 months postoperatively, but the patients had no complaints. No fixator failure was found. Conclusion USS Schanz system has the advantages of easy manipulation, good reduction, high fusion rate and reliable internal fixation in lumbar spondylolisthesis.It is an effective treatment for lumbar spondylolisthesis.