Comparasion of the tissue invasiveness and the clinical effects of lumbar disc herniation treated by microendoscopic discectomy and traditional open operation
AIM: To compare the tissue invasiveness and the clinical effects of lumbar disc herniation treated by microendoscopic discectomy (MED) and traditional open operation. METHODS: A total of 248 patients with prolapsed lumbar intervertebral disc were treated by microendoscopic discectomy or traditional open operation randomly between January 2003 and December 2006. The METRx system (Medtronic Sofamor Danek, Memphis, TN) was used to perform MED. Parameters which can reflect the tissue invasiveness were monitored and recorded. 221 cases of the 248 patients were followed up from 4 month to 4 years with the average of 21 months. Outcome assessment was done by the JOA criteria. RESULTS: Compared to the traditional open operation, MED has advantages, such as short incision, low blood loss, less nerve root irritation, lighter systemic inflammatorome, less low back pain and short hospital stay. The results of the short follow-up showed that the clinical effect has no significant difference between the MED group and the traditional group. CONCLUSION:MED is a safe and effective procedure for the treatment of prolapsed lumbar intervertebral disc. Compared to the traditional open operation, MED is a more minimally invasive spinal procedure.