Background: Hyperdynamic activity of the corrugator supercilii and procerus muscles causes glabellar furrows. Recently, a novel radiofrequency device has become available that can effectively ablate the efferent nerves controlling corrugator and procerus contraction, producing clinical results that are similar to those of botulinum toxin.
Objective: To assess the efficacy, longevity of effect, and side effects of the radiofrequency ablation device in the treatment of hyperdynamic glabellar furrows.
Materials and methods: Four probe entry points were used to access branches of the temporal and angular nerves. Seven and two ablations, respectively, were delivered to each temporal branch and angular nerve.
Results: Twenty-nine patients underwent bilateral radiofrequency ablation of temporal branches of the facial nerve and the angular nerves. Abrogation of glabellar furrowing was achieved in 90% of patients. No major adverse events were observed. All patients developed mild to moderate swelling, and nine patients (31%) developed purpura in the treated areas. Sixty-nine percent of patients had effects that lasted 4 months or longer, 41% had effects that lasted 6 months or longer, and 10% had effects lasting longer than 12 months.
Conclusion: Radiofrequency ablation of efferent branches of the temporal and angular nerves effectively eliminates corrugator and procerus contraction and concomitant glabellar furrowing.