Article

Ultrasonography and magnetic resonance imaging in the diagnosis of Morton's neuroma.

Department of Trauma and Orthopaedics, Chase Farm Hospital, Enfield, Middlesex, England.
Journal of the American Podiatric Medical Association (impact factor: 0.57). 05/2012; 102(3):184-6. pp.184-6
Source: PubMed

ABSTRACT Magnetic resonance imaging (MRI) and ultrasonography are used widely for the diagnosis of Morton's neuroma. The aim of this study was to assess the accuracy of these two modalities as diagnostic tools in Morton's neuroma.
Fifty feet of 47 consecutive patients (39 women and 8 men; mean age, 46 years; age range, 36-64 years) who presented between January 1, 2005, and June 30, 2008, were included in the study. Twenty-five feet were investigated with ultrasonography and 25 with MRI. Morton's neuroma was confirmed surgically and histologically in all of the patients. A Student unpaired t test was applied.
Twenty-two MRIs were diagnostic (sensitivity, 88%). Three patients with negative MRI findings underwent ultrasonography and were found to have a neuroma smaller than 5 mm. Twenty-four ultrasound scans demonstrated the neuroma (sensitivity, 96%), with five neuromas being smaller than 5 mm.
Ultrasonography has a slightly higher sensitivity in the diagnosis of Morton's neuroma, particularly of neuromas smaller than 5 mm, and should be the preferred imaging modality in suspected cases, and MRI should be reserved for cases with equivocal diagnosis.

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Keywords

47 consecutive patients
 
8 men
 
age range
 
diagnostic tools
 
equivocal diagnosis
 
feet
 
higher sensitivity
 
histologically
 
Magnetic resonance imaging
 
Morton's neuroma
 
MRIs
 
negative MRI findings
 
neuroma smaller
 
neuromas smaller
 
patients
 
preferred imaging modality
 
Student unpaired t test
 
two modalities
 
ultrasonography
 
ultrasound scans
 

Muhammad Ali Fazal