Comparative clinic research on microendoscopic lumbar discectomy and open surgery

Objective To compare the effect of microendoscopic discectomy and standard open discectomy and assess the clinical value of MED. Methods 100 patients treated with MED and 100 patients treated with standard open discectomy was retrospectively analyzed.MED was performed via a small paracentral approach that allowed thorough root exploration,direct decompression and remove of disc material.This was achieved by applying open surgical tools through a tubular retractor under endoscopic visualization.The endoscopic was inserted by a sequential set of dilators passed over the initial guide wire.Results The two groups were followed up for 15 months and 19 months after operation separately.MED group needed significantly less narcotic medication after surgery.The fellow-up outcomes were evaluated using a modified MacNab criteria,which revealed that 75% of patients were excellent,22% were good,3% were fair in MED group.The open group was similar.Conclusion Compared with the standard open surgery group,MED offer a similar short-term clinical outcome,t with smaller incision,less tissue trauma and quicker recovery.But surgical indication of MED must be mastered strictly.