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Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_21 | Pages 15 - 15
1 Apr 2013
Chuter G Chua Y Connell D Blackney M
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Introduction. Up to 70% of patients with symptomatic Morton's neuroma proceed to surgery having failed non-operative management. The success of surgical excision is up to 85% but carries with it significant morbidity. Radiofrequency ablation (RFA) is a less invasive alternative. Methods. We studied a consecutive cohort of patients with Morton's neuroma that had failed non-operative treatment. Instead of undergoing surgical excision, these patients were referred for RFA. Under a local anaesthetic nerve block, RFA was performed under ultrasound-guidance, as an out-patient procedure, by a single radiologist. The procedure was repeated after 4 weeks if necessary. We followed patients for a minimum of 6 months to assess their change in visual analogue pain scores (VAS), overall symptom improvement, complications and progression to surgical excision. Results. 30 feet in 25 patients were studied. There were 4 males and 21 females with an average age of 55 years (range 33–73 y). All had tried previous methods of non-operative management. 40% presented with 2. nd. space neuromas and 60% with 3. rd. space. The average number of treatment sessions was 1.6 (range 1–3, mode 1). Prior to treatment, all patients had pain on activity (VAS average: 6.0, range 3–9). At 6 months post treatment, there was a statistically significant reduction in pain scores (post RFA VAS average: 1.7, range 0–8, p<0.001). The average overall symptom improvement was 76%. There was one minor complication of temporary nerve irritation. 3 neuromas (10%) have progressed to surgical excision. 1 patient has ongoing, unchanged pain with no obvious cause. At 6 months, 26 out of 30 feet had a satisfactory outcome. Conclusion. RFA has potentially reduced the need for surgical excision of Morton's neuromas by >85%