Holmberg D L, Palmer N C, VanPelt D, Willan A R
Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Canada.
Vet Surg. 1990 Sep-Oct;19(5):323-7. doi: 10.1111/j.1532-950x.1990.tb01199.x.
Thoracolumbar disc fenestration was performed in eight canine cadavers. A hole was cut in the anulus fibrosus with a scalpel in four dogs, and with a high speed drill and burr in four dogs. A curette was used to remove as much of the nucleus pulposus as possible. Sixty-five percent of the nucleus pulposus was removed with the power-assisted technique and 41% was removed by manual fenestration. Manual and power-assisted disc fenestration were performed on alternate intervertebral discs from T11-12 to L5-6 in four dogs. Six months after surgery, results of high-detail radiographic and histologic evaluation of the vertebral bodies and discs showed minimal difference in the sequelae of the two techniques. A retrospective medical records analysis and follow-up of 60 clinical cases treated with prophylactic, power-assisted disc fenestration failed to identify any cases with postoperative recurrence of neurologic deficits. Ten percent of the dogs had periodic back pain of unknown etiology, without other signs of intervertebral disc disease. The findings of this study indicate that power-assisted disc fenestration permits more complete evacuation of the nucleus than manual fenestration, causes no more postoperative complications, and results in a low recurrence rate of neurologic deficits.
在八只犬类尸体上进行了胸腰椎椎间盘开窗术。在四只狗身上用手术刀在纤维环上切开一个洞，在另外四只狗身上用高速钻和磨头进行操作。用刮匙尽可能多地去除髓核。采用动力辅助技术去除了65%的髓核，手动开窗术去除了41%的髓核。在四只狗身上，从T11 - 12到L5 - 6的交替椎间盘上进行了手动和动力辅助椎间盘开窗术。术后六个月，对椎体和椎间盘进行的高细节放射学和组织学评估结果显示，两种技术的后遗症差异极小。对60例接受预防性动力辅助椎间盘开窗术治疗的临床病例进行回顾性病历分析和随访，未发现任何术后神经功能缺损复发的病例。10%的狗患有病因不明的周期性背痛，无其他椎间盘疾病迹象。本研究结果表明，动力辅助椎间盘开窗术比手动开窗术能更彻底地清除髓核，不会导致更多的术后并发症，且神经功能缺损的复发率较低。
