Conical working tube: a special device for endoscopic surgery of herniated lumbar discs

• DOI: 10.3171/spi.2005.2.3.0265
• Publication Date: 2009-05-07T16:07:30Z
• Authors: Mazhar Husain; Deepak K. Jha; Sunil Agrawal; Nuzhat Husain; Rakesh K. Gupta
• Keywords: Discectomy; Endoscope; Diskectomy

The instrumentation for endoscopic discectomy continues to evolve allow acceptable clinical outcomes and expanding applications. authors describe their experience in using a conical working tube equipped with guide angular entry of the telescope perform patients lumbar disc herniation.Fifty-one (38 men 13 women) herniated discs underwent surgery during past 2.5 years at authors' institutions. A was inserted over sequential coaxial dilators via muscle-splitting approach. Conventional neurosurgical instruments were used conjunction an angled insertion telescope. Endoscopic performed L1-2 (one case), L3-4 (two cases), L4-5 (32 L5-S1 (18 cases) levels. surgical approach bilateral two patients: one, right left other. remaining patient suffered adjacent two-level (right-sided L5-S1) herniations. Outcome assessed mean 11 months after by modified Macnab criteria. Outcomes excellent 46 (90%), fair three (6%), poor (4%). Complications occurred four included dural tear one case, postoperative neurological deterioration two, discitis two; these open exploration required.A separate shortens effective length sheath creates better space, thereby allowing greater instrument maneuverability ability use conventional instruments. In addition, this other procedures reduces overall cost treatment, results are comparable those reported association microscopic discectomy.