tubular retractor로서 matrix를 사용한 후방 미세 병변제거술

초록

Object: The authors report the surgical results of consecutive 22 patients after microscopic lesionectomy with tubular retractor. Methods: This is achieved by 16-18mm diameter tubular dilator after sequential dilatation. The target of tubular retractor is variable according to portion of ruptured particle and laminotomy was performed using high-speed drill in which ruptured disc was located. Clinical and radiological results of 22 patients (11 male and 11 female) was retrospectively evaluated. Results: The mean age of the patients was 49.27 years and surgical level recorded as two patients at L34, nine patients at L45 and 11 patients at L5S1. MRI characteristics of the examined disc herniation showed as 13 patients of the dorsal to intervertebral space, six patients of the herniated cranially or caudally, and three of the sequestrated type. All patients had substantial relief of their radiculopathy and mean diameter of laminotomy area under the examination of postoperative CT checked 4.5mm. Mean blood loss during surgery was 69.54ml and hospital stays was 4.5 days after surgery. Conclusion: Good surgical results have achieved using Matrix as a tubular retractor. This technique have advantage of which the variable approach as location of disc herniation is possible and spinal surgeon have familiarityin the surgical anatomy in comparison with another endoscopic approach.