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Sonography of Morton's neuromas
T J Quinn1, J A Jacobson, J G Craig
1Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109-0326, USA.
AJR. American Journal of Roentgenology
|June 14, 2000
Summary
Sonography accurately detects Morton's neuromas in 85% of cases. Identifying the plantar digital nerve continuity with the mass increases diagnostic confidence for this common foot condition.
Area of Science:
- Radiology
- Musculoskeletal Imaging
- Podiatric Medicine
Background:
- Morton's neuroma is a common cause of forefoot pain.
- Accurate diagnosis is crucial for effective treatment planning.
Purpose of the Study:
- To assess the effectiveness of sonography in diagnosing Morton's neuromas.
- To characterize the sonographic features of Morton's neuromas.
Main Methods:
- Sonography was used to evaluate 30 intermetatarsal spaces.
- Prospective sonographic findings were compared with surgical and pathological results.
- Retrospective analysis characterized neuroma echotexture, location, size, and nerve continuity.
Main Results:
- Sonography correctly identified Morton's neuromas in 85% of cases.
- Neuromas typically appeared hypoechoic (79.2%) and were located dorsal to the metatarsal heads (50%).
- Continuity with the plantar digital nerve was a reliable indicator of neuroma (15/15 cases).
Conclusions:
- Sonography is a valuable tool for diagnosing Morton's neuroma, with an 85% detection rate.
- Confirming continuity with the plantar digital nerve enhances diagnostic certainty.
- Interdigital masses exceeding 20 mm may represent alternative pathologies.