Application of laminoplasty in spinal epidural cyst resection

Abstract

Objective To explore the significance of laminoplasty in the surgical treatment of spinal extradural arachnoid cyst (SEAC).Methods 24 patients with SEAC,who were admitted and operated in the department of neurosurgery in Beijing Jishuitan hospital from May 2011 to June 2013 were retrospectively analyzed.According to the different surgical methods,all the patients were divided into two groups:non-laminoplasty group (group A) and laminoplasty group (group B).The data of patients in each group involving operative time,blood loss,preoperative and postoperative JOA scores and neurological function recovery rate,preoperative and postoperative spine Kyphotic angle were analyzed retrospectively.Results The surgical bleeding in group B was (111.1 ± 48.6) ml,which was significantly less than the (513.3± 131.6)ml in group A (t =-8.755,P =0.000).The operative duration time in group B was (45.4 ± 5.3) rman,which was significantly shorter than the (89.8 ± 19.1) min in group A (t =-8.443,P =0.000).The group B Kyphotic angle of 6.8° ± 1.2°was significantly lower than the 10.1° ± 1.2°in group A (t =-6.388,P =0.000).There was no statistical difference of the data of Kyphotic angle,preoperative JOA score,postoperative JOA score and the neurological recovery rate between two groups(t =-8.443,P ＞ 0.05).Conclusions Laminoplasty with craniotome was an effective and safe method with low recurrence for the treatment of SEAC. Key words: Spinal canal ; Arachnoid cyst; Craniotome ; Laminoplasty