Evaluating predictors of pain reduction after genicular nerve radiofrequency ablation for chronic knee pain.

Pain Management
Annie PhilipJennifer Gewandter

Abstract

Aim: Radiofrequency ablation (RFA) of genicular nerves can treat refractory chronic knee pain. This study evaluated association between patient and procedural characteristics and pain improvement after genicular nerve RFA. Materials & methods: A retrospective chart review. Data were extracted from patients who underwent thermal or cooled RFA of the knee. Results: A total of 124 patients were included. 81% of patients reported ≥75% pain relief after diagnostic nerve blocks. 35% reported ≥50% pain reduction from the RFA. Predictors of improved pain outcomes included higher baseline pain, no depression and thermal (vs cooled) RFA. Conclusion: Identifying patients who may benefit the most from genicular RFA is still not clear. Pain reduction differences between patients with and without depression and RFA type deserves further exploration.

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