Abstract: ObjectiveTo investigate the applying value of nerve root retractor in lumbar intervertebral disc operation.Methods116 consecutive patients underwent lumbar discectomy performed with a new approach using a series of semi-tubular retractor with consecutively increasing diameters, and their clinical data was analyzed retrospectively.ResultsThe mean operative time was 30～90 min per level, average 50 minutes and estimated blood loss was 50～200 ml per level, average 120 ml, no complications occurred. All patients were followed up 3 to 18 months after operation. All patients had substantial relief of their lumbago and radiculopathy, in which 96 without any symptoms, 3 cases with gently lumbago and limb numbness, 8 cases with gently lumbago, and 9 cases with lightly limb numbness.ConclusionThe nerve root retractor for lumbar discectomy made specially by ourselves can facilitate a good exposure to lumbar disc and intervertebral space, prevent injury of nerve roots or cauda equina and decrease volume of bleeding during operation, so as to make the procedure safe and effective.

Key words: lumbar discectomy, nerve root retractor, complication