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find Author "俞武良" 4 results
  • EARLY OUTCOME OF USING ZERO-PROFILE IMPLANT SYSTEM IN TREATMENT OF CERVICAL SPONDYLOSIS

    Objective To evaluate the early outcome of anterior cervical discectomy and fusion (ACDF) using a Zero-profile implant system (Zero-P) for interbody fusion in the treatment of cervical spondylosis. Methods Between March 2010 and June 2011, 25 patients with cervical spondylosis underwent ACDF with Zero-P. There were 13 males and 12 females with an average age of 44.2 years (range, 26-67 years), including 14 cases of nerve root cervical spondylosis, 6 cases of spinal cervical spondylosis, and 5 cases of mixed cervical spondylosis. The disease duration was 3-120 months (median, 25 months). Single segment was involved in 20 cases, 2 segments in 4 cases, and 3 segments in 1 case. A total of 31 Zero-P were implanted (3 at C3, 4, 8 at C4, 5, 12 at C5, 6, and 8 at C6, 7). Primary cervical operation was performed in 23 cases and re-operation in 2 cases. Before and after operation, the height of intervertebral space and the cervical Cobb angle were measured; clinical outcome was evaluated using visual analogue scale (VAS) score for pain in the neck and upper limb, and Japanese Orthopaedic Association (JOA) score for myelopathy; and intervertebral fusion and the incidence of dysphagia were also observed. Results All incisions healed by first intention. All the patients were followed up 12-16 months (mean, 13.9 months). Interbody bone fusion was obtained, and the fusion time was 2.7-6.0 months (mean, 3.8 months). Three patients had dysphagia after operation; symptom disappeared at 1 week and 3 months after operation in 2 cases and 1 case, respectively. No fixation loosening, subsidence, or breakage occurred. The height of intervertebral space was significantly improved (P lt; 0.05) from (4.5 ± 0.5) mm at preoperation to (6.0 ± 0.7) mm at 1 week and (5.7 ± 0.6) mm at 12 months after operation; the cervical Cobb angle was significantly improved (P lt; 0.05) from (11.9 ± 6.1)° at preoperation to (21.2 ± 4.1)° at 1 week and (20.2 ± 3.7)° at 12 months after operation; and there was no significant difference between at 1 week and 12 months after operation (P gt; 0.05). The VAS score was significantly reduced (P lt; 0.05) from 7.1 ± 0.8 at preoperation to 1.9 ± 0.8 at 3 months and 1.0 ± 0.5 at 12 months after operation; the JOA score was significantly increased (P lt; 0.05) from 9.6 ± 1.3 at preoperation to 13.5 ± 1.0 at 3 months and 14.9 ± 1.0 at 12 months after operation; and there was significant difference between at 3 months and at 12 months after operation (P lt; 0.05). Conclusion The early outcome of ACDF using a Zero-P in the treatment of cervical spondylosis is satisfactory and reliable, and it can restore and maintain the cervical alignment and disc height, and disc has low incidence of postoperative dysphagia.

    Release date:2016-08-31 04:05 Export PDF Favorites Scan
  • EARLY EFFECTIVENESS OF ZERO-PROFILE INTERBODY FUSION SYSTEM FOR TREATMENT OF CERVICAL DISC PROTRUSION

    Objective To investigate the early effectiveness of Zero-profile interbody fusion system (Zero-P) in the treatment of cervical disc protrusion. Methods Between October 2010 and June 2012, 25 patients with cervical disc protrusion underwent anterior cervical discectomy and fusion (ACDF) using the Zero-P system. There were 15 males and 10 females, aged from 35 to 68 years (mean, 49 years). The disease duration was 3-26 months (mean, 10.5 months). Single segment was involved in all cases (2 cases in C3, 4, 5 cases in C4, 5, 11 cases in C5, 6, and 7 cases in C6, 7). The operation time and blood loss were recorded and analyzed. The visual analogue scale (VAS) score, Japanese Orthopaedic Association (JOA) score, and neck disability index (NDI) were used to assess pain and nerve function improvement; the cervical Cobb angle was measured on the X-ray films before and after operation; according to Pitzen’s criteria, intervertebral fusion was evaluated. Results The operation was successful in 25 patients, with no severe complication. The average blood loss was 42.6 mL (range, 20-120 mL). The average operation time was 63.6 minutes (range, 45-90 minutes). Primary healing of incision was obtained in all cases; no injury of spinal cord and nerve root, cerebrospinal leakage, or deep infection occurred. The patients were followed up 6-23 months (mean, 14.5 months). No Cage subsidence and loosening, breaking, or pulling-out were observed. The symptoms and curvature of the cervical spine were obviously improved in all patients after operation. The VAS score, JOA score, NDI, and the cervical Cobb angle at 3 months and last follow-up showed significant differences when compared with preoperative ones (P lt; 0.05), but no significant difference was found between at 3 months and at last follow-up (P gt; 0.05). The interbody fusion was achieved in each operated segment of all patients according to Pitzen’s criteria. Conclusion The early effectiveness of ACDF with Zero-P system is satisfactory in treatment of cervical disc protrusion because it has the advantages of short operation time, less bleeding, good stability and restoration of the cervical alignment.

    Release date:2016-08-31 04:07 Export PDF Favorites Scan
  • 短节段椎弓根螺钉系统并伤椎固定治疗胸腰椎骨折脱位

    目的 总结后路短节段椎弓根螺钉系统并伤椎固定治疗胸腰椎骨折脱位的疗效。 方法 2006 年1 月- 2008 年12 月,收治18 例胸腰椎骨折脱位患者。其中男12 例,女6 例;年龄24 ~ 50 岁,平均41 岁。高处坠落伤8 例,车祸伤7 例,重物砸伤3 例。受伤节段:T12 骨折合并T11 脱位5 例,L1 骨折合并T12 脱位7 例,L2 骨折合并L1 脱位4 例,L3 骨折合并L2 脱位2 例。神经功能Frankel 分级:A 级7 例,B 级4 例,C 级3 例,D 级2 例,E 级2 例。术前影像学检查示骨折椎体均有楔形变,其下终板及椎体下部保持完整。受伤至手术时间3 ~ 7 d,平均5 d。采用后路短节段椎弓根螺钉系统加伤椎固定进行复位、固定并植骨融合。 结果 手术时间160 ~ 210 min,平均185 min;术中出血量500 ~ 800 mL,平均650 mL。术后患者切口均Ⅰ期愈合,无严重并发症发生,无脊髓、神经功能加重。18 例均获随访,随访时间11 ~ 36 个月,平均20 个月。术后2 周摄X 线片示骨折椎体高度恢复至正常的85% ~ 95%,相邻上位椎体脱位完全复位。脊髓功能除7 例Frankel A 级无变化外,其余各级均有不同程度恢复。 结论 同时经伤椎椎弓根螺钉固定治疗胸腰椎骨折脱位可取得良好复位效果,并能增强后路短节段内固定系统的牢固性。

    Release date:2016-08-31 05:47 Export PDF Favorites Scan
  • 外伤致颈椎前纵韧带骨化断裂一例

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    Release date:2016-08-31 05:48 Export PDF Favorites Scan
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