A comparison of posterior percutaneous endoscopic cervical discectomy and unilateral biportal endoscopic discectomy in treatment of cervical spondylotic radiculopathy
Objective To compare the clinical outcomes of posterior percutaneous endoscopic cervical discectomy(PPECD)and unilateral biportal endoscopic discectomy(UBED)in the treatment of cervical spondylotic radiculopathy(CSR).Methods Forty-four CSR patients were treated with PPECD(group PPECD,21 cases)and UBED(group UBED,23 cases),respectively.The operation time,intraoperative blood loss,volume of lavage fluid and postoperative drainage were compared between the two groups.The changes of neck and upper limb VAS pain score and neck disability index(NDI)before operation and on the 3rd day and 3 months after operation,and imaging indicators before and 3 months after operation were evaluated.According to Macnab standard,the excellent and good rates of the two groups were compared 3 months after operation.Results The operation time was shorter[(66.1±12.2)min vs.(87.9±19.9)min],while the intraoperative blood loss,volume of lavage fluid and postoperative drainage were more[(47.4±25.6)mL vs.(14.0±6.0)mL,(9.9± 1.9)L vs.(7.7±2.6)L and(26.1±12.8)mL vs.(13.8±6.7)mL]in group UBED than those in group PPECD(P<0.01).Compared with before operation,neck and upper limb VAS pain scores and NDI were decreased on the 3rd day and 3 months after operation(P<0.05),intervertebral disc angle a,functional spinal unit(FSU)angle β and C2-C7 Cobb angle y were increased,while C2-C7 sagittal vertical axis(SVA)was decreased 3 months after operation in the two groups(P<0.05).There were no significant differences in neck and upper limb VAS pain score,NDI,intervertebral disc angle α,FSU angle β,C2-C7 Cobb angle y,C2-C7 SVA and the excellent and good rates between the two groups 3 months after surgery(P>0.05).Conclusion Both PPECD and UBED can effectively treat CSR PPECD shows less trauma,while UBED shows higher efficiency.