Successful Treatment of Cervical Spondylolysis with Grade-II Spondylolisthesis using Single-Level ACDF: A Case Report

Objective:Rare coexistence of disease or pathology Background:Cervical spondylolysis with spondylolisthesis is a rare disorder.According to previous reports, the spondylolisthesis is usually Meyerding Grade I, with only a limited number of cases receiving surgical treatment.We hereby report a special case of cervical spondylolysis with Grade-II spondylolisthesis, treated with single-level anterior cervical discectomy and fusion (ACDF), and present a literature review related to this problem. Case Report:Here, we report the case of a 52-year-old man who complained of posterior neck pain and numbness of the bilateral upper limbs.Radiological examination showed bilateral spondylolysis of the C6 and Meyerding Grade-II spondylolisthesis of C6 on C7 with instability.The patient underwent a single-level C6/C7 ACDF surgery.The symptoms of neck pain and bilateral upper-limb numbness were relieved immediately after surgery.The immediate postoperative radiological examination showed successful restoration of sagittal alignment.At 3-month follow-up, the patient had returned to normal life without any symptoms.At 2-year follow-up, computed tomography showed that C6-C7 fusion had been achieved and alignment was maintained. Conclusions:Cervical spondylolysis, as an uncommon spinal disorder, has been regarded as a congenital abnormity, and has unique radiological characteristics.For most of the cases with cervical spondylolysis, even with Grade-II spondylolisthesis, single-level ACDF can achieve good clinical and radiological outcomes.