AI Article Synopsis
- A study examined the occurrence of incidental torn plantar plates in both symptomatic and asymptomatic patients undergoing foot MRIs from 2019 to 2020.
- Out of 218 patients, 28% of symptomatic individuals had torn plantar plates, compared to only 2% in asymptomatic patients, indicating a significant difference in findings.
- The research concluded that the likelihood of a false-positive plantar plate tear in asymptomatic patients is very low, suggesting MRIs are reliable in identifying true occurrences of the tear.
Article Abstract
Background: We hypothesized that there would be a comparable and high incidence of an incidental torn plantar plate on routine magnetic resonance imaging (MRI) in asymptomatic patients.
Methods: We included adult patients undergoing a foot MRI from 2019 to 2020. Based on the documented reason for MRI, patients were divided into symptomatic and asymptomatic. A separate musculoskeletal radiologist re-evaluated MRI images. Findings were categorized as "torn vs intact." We also used the anatomical grading system (AGS).
Results: We reviewed 218 records, including 165 asymptomatic and 53 symptomatic patients. The chance of finding a plantar plate (PP) tear on MRI of symptomatic patients was 28% (21% in PP2, 5.7% in PP3, 5.7% in PP4, and 2% in PP5), while PP tear in asymptomatic patients was only apparent in 2% of MRIs (1.5% in PP2, 0 in PP3, 0 in PP4, and 0.6% in PP5). Cohen's kappa coefficient was 0.92, showing excellent agreement between the radiologists. Odds calculation revealed that the chance of finding a torn PP in an asymptomatic patient is 2.5%. In comparison, the chance of finding an intact PP in a symptomatic patient is 72%, showing 2.5 times more likely to find an intact PP than a torn PP in symptomatic individuals.
Conclusion: Interestingly, there was a low rate of abnormal PP appearance on MRI in both symptomatic and asymptomatic patients, which suggests that the chance of finding a false-positive PP tear in an asymptomatic patient is minimal and probably negligible.
Level Of Evidence: Level IV diagnostic.
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| http://dx.doi.org/10.1177/19386400221118460 | DOI Listing |
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