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THE EFFICACY OF ULTRASOUND GUIDED-STEROID INJECTION IN THE TREATMENT OF INTERDIGITAL METATARSALGIA



Abstract

Objective of the Study: To assess the clinical effectiveness of ultrasound guided injection in the management of Morton’s Metatarsalgia.

Patients and Methods: Patients, that were clinically diagnosed to with interdigital Morton’s neuroma were treated with ultrasound guided injection of local anaesthetic and steroid. Fifty three patients were available for follow-up, and all had detailed telephone questionnaires completed. These questionnaires included a pre and post injection symptom score, as well as a Johnson Satisfaction score.

Results: 69% of patients had ultrasound diagnosis of Morton’s neuroma and 31% had an ultrasound diagnosis of intermetatarsal bursa. Mean follow up was11.4 months (Range: 3-23 months).67% of the patients were satisfied with the results of treatment. At follow up 63% of patients had no limitation in activity levels, and had no need to modify their shoe wear. Of all patients included in the study, only 3 patients have gone on to require surgery for ongoing symptoms.

Conclusion: Some studies have suggested that neither injection nor imaging have a role in the treatment of Morton’s neuroma. This study, however, demonstrate that ultrasound guided placement of local anaesthetic and steroid in either an intermetatarsal bursa or Mor-ton’s neuroma gives a good short and medium term symptom relief and in the majority of cases avoids the need for surgery.

Correspondence should be addressed to Mr Bimal Singh, BOSA at the Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London WC2A 3PE