Successful anterior fusion following posterior cervical fusion for revision of anterior cervical discectomy and fusion XXXX .

@entity1 @entity227 @entity51 @entity4048 @entity13890 @entity1516
UNASSIGNED: @entity1516 occurs after approximately 2-20% of anterior cervical discectomy and fusion (ACDF) procedures; it is unclear if posterior or anterior revision should be pursued. In this study, we retrospectively evaluate the outcomes in 22 @entity1 with @entity1516 following ACDF and revision via posterior cervical fusion (PCF). Baseline demographics, preoperative symptoms, operative data, time to fusion failure, symptoms of @entity1516 , and revision method were assessed. Fusion outcome and clinical outcome were determined at last follow-up (LFU). Thirteen females (59%) and 9 (41%) males experienced @entity1516 at a median of 11 (range: 3-151)months after ACDF. Median age at index surgery was 51 (range: 33-67)years. All @entity1 with @entity1516 presented with progressive @entity4048 , with median @entity227 ( @entity227 ) score of 8 (range: 0-10), and/or @entity13890 . @entity1 with @entity1516 <12months compared to >12months after index surgery were older (p=0.013), had more frequent preoperative @entity51 (p=0.064), and lower baseline @entity227 scores (p=0.006). Fusion was successful after PCF in all @entity1 , with median time to fusion of 10 (range: 2-14)months. Eighteen @entity1 fused both anteriorly and posteriorly, two @entity1 fused anteriorly only, and two @entity1 fused posteriorly only. Median @entity227 neck score at LFU significantly improved from the time of @entity1516 (p=0.012). While uncommon, @entity1516 may occur after ACDF. All @entity1 achieved successful fusion after subsequent posterior cervical fusion, with 91% fusing a previous anterior @entity1516 after posterior stabilization. @entity4048 significantly improved by LFU in the majority of @entity1 in this study.
