Efficacy of microsurgery though percutaneous microchannel for patients with intradural extramedullary tumors in the lumbar spinal canal
KANG Zheng-wen
RAO Xian-feng
CHEN Jian-wei
WANG Bo
WANG Tong
ZHANG Qiu-sheng
Abstract：Objective To evaluate the efficacy of microsurgical resection through percutaneous microchannel for patients with intradural extramedullary tumors in the lumbar spinal canal.Methods The clinical data of 21 patients with intradural extramedullary tumors in the lumbar spinal canal who underwent microsurgical resection through percutaneous microchannel from January 2016 to September 2022 were analyzed retrospectively.Results Total rsection of the tumors was achieved in all patients.The postoperative pathological results showed neurilemmoma in 16 patients and ependymoma in 5.There were no worsening of neurological dysfunction,incision infection and cerebrospinal fluid leakage after operation.The operative time was 76～345 min,with an average of(164.76±57.07)min.Intraoperative blood loss ranged from 10 ml to 100 ml,with a median of 20 ml(20～45 ml).The time of getting out of bed after surgery was 1～6 days,with a median time of 2 days(1～4 days).Postoperative hospital stay was 3～13 days,with an average of(6.19±3.20)days.Innervation pain or numbness in 18 patients,lower limb movement disorder in 7 patients and defecation dysfunction in 2 patients were recovered after operation.Postoperative CT after 3D reconstruction showed small laminar defects without lumbar instability or deformity.The VAS scores at 1 week[(3.24±0.62)points],3 months[(1.90±0.70)points]and 6 months after surgery[(0.95±0.67)points]were significantly lower than that[(5.38±0.86)points]before surgery(P<0.001).The JOA score at 1 week[(19.67±1.98)points],3 months[(23.71±1.42)points]and 6 months after surgery[(27.14±1.11)points]was significantly higher than that[(13.76±0.94)points]before surgery(P<0.001).Conclusions Microsurgical resection through percutaneous microchannel is a safe and effective method for patients with intradural extramedullary tumors in the lumbar spinal canal,which can protect the normal anatomy of the vertebral body and paravertebral structure to the maximum extent and effectively stabilize the spine,and reduce surgical trauma.
Keywords：Percutaneous microchannelLumbar intraspinal tumorMicrosurgeryIntradural extramedullary tumorsEfficacy
Publication Date：2023-09-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 577-580 )