Interventions for the treatment of Morton's neuroma.

BACKGROUND

Morton's neuroma is a common, paroxysmal neuralgia affecting the web spaces of the toes, typically the third. The pain is often so debilitating that patients become anxious about walking or even putting their foot to the ground. Insoles, corticosteroid injections, excision of the nerve, transposition of the nerve and neurolysis of the nerve are commonly used treatments. Their effectiveness is poorly understood.

OBJECTIVES

To examine the evidence from randomised controlled trials concerning the effectiveness of interventions in adults with Morton's neuroma.

SEARCH STRATEGY: We searched the Cochrane Neuromuscular Disease Group trials register (searched January 2003), MEDLINE (January 1966 to January Week 2 2003), EMBASE (January 1980 to February Week 2 2003), and CINAHL (January 1982 to February Week 1 2003).

SELECTION CRITERIA: Randomised or quasi-randomised (methods of allocating participants to an intervention which were not strictly random e.g. date of birth, hospital record, number alternation) controlled trials of interventions for Morton's neuroma were selected. Studies where participants were not randomised into intervention groups were excluded.

DATA COLLECTION AND ANALYSIS: Two reviewers selected trials for inclusion in the review, assessed their methodological quality and extracted data independently.

MAIN

RESULTS

Three trials involving 121 people were included. There is, at most, a very limited indication that transposition of the transected plantar digital nerve may yield better results than standard resection of the nerve in the long term. There is no evidence to support the use of supinatory insoles. There are, at best, very limited indications to suggest that dorsal incisions for resection of the plantar digital nerve may result in less symptomatic post-operative scars when compared to plantar excision of the nerve.

REVIEWERS'

CONCLUSIONS

There is insufficient evidence with which to assess the effectiveness of surgical and non-surgical interventions for Morton's neuroma. Well designed trials are needed to begin to establish an evidence base for the treatment of Morton's neuroma pain.