Cervical medial branch nerve integrity after cervical spine surgery: Considerations for radiofrequency ablation

Cervical radiofrequency ablation (RFA) is a well-supported, evidence-based intervention for treating facet-mediated neck pain. However, its efficacy may be reduced in postsurgical patients with altered cervical medial branch nerve (MBN) integrity. This review examines how common cervical spine surgical approaches affect MBN integrity and proposes a pragmatic framework for assessing RFA candidacy in postsurgical patients. Anterior surgical approaches typically preserve the posterior elements and spare the MBNs, thereby maintaining RFA candidacy at operated and adjacent levels. In contrast, posterior cervical fusion commonly disrupts the MBNs at instrumented segments due to lateral mass exposure and decortication, making RFA at fused levels unlikely to be effective; however, adjacent levels may remain appropriate targets with careful technical planning. Laminoplasty carries a moderate-to-high risk of MBN compromise because of posterior element dissection and partial facet violation, requiring individualized evaluation using operative reports and postoperative imaging. Minimally invasive surgeries including laminotomy and foraminotomy more often preserve MBN integrity, particularly when facet resection is limited. Successful cervical RFA in postsurgical patients requires a systematic pre-procedural evaluation - correlation of symptoms with facet-mediated pain patterns, review of surgical history and postoperative imaging to determine MBN integrity, and assessment of technical feasibility including hardware proximity and fluoroscopic access. While patients generally remain candidates after undergoing anterior cervical spine surgeries, posterior fusion patients require avoidance at instrumented levels, and non-fusion posterior procedures warrant individualized assessment. This anatomy-based framework may improve patient selection, though prospective validation is needed.