Abstract: Objective To compare the efficacy and safety of the partial hemilaminectomy approach and the classic hemilaminectomy approach.
Methods A total of 55 patients with intraspinal schwannoma who underwent partial hemilaminectomy from November 2016 to January 2019 in First Affiliated Hospital of Chongqing Medical University were collected as the research group,and 61 patients with intraspinal schwannoma at the same period who treated with classic hemilaminectomy served as a control group.The differences in tumor total resection rate,surgical incision length,postoperative incision infection rate,intraoperative blood loss,operation time,postoperative VAS pain score,postoperative motor sensory evaluation,and incidence of spinal deformity were compared and analyzed between the two groups.
Results There was no significant difference between the two groups in tumor total resection rate,postoperative spinal deformity rate,postoperative movement sensory improvement rate(P>0.05);the VAS scores of the research group at 24 h and 48 h were significantly lower than those of the control group(P<0.05).Compared with the control group,cases in the research group had small surgical incisions,low postoperative incision infection rate,less intraoperative blood loss,and short operation time,with significant differences(P<0.05).
Conclusion Treatment of intraspinal schwannoma via partial hemilaminar approach has less trauma,low surgical risk,and does not increase the incidence of early or late period postoperative complications,does not affect the tumor total resection rate.

Key words: hemilaminar approach, intraspinal tumor, schwannoma, surgery