Posterior ankle labral changes at <scp>MRI</scp>: A preliminary study
Bibliographic record
Abstract
INTRODUCTION: The transverse ligament in the ankle joint has been described as a labrum-like structure in a previous cadaveric study. The purpose of this study is to assess the spectrum of abnormal changes related to this structure on imaging/MRI, and correlate these findings with other ankle joint findings and patient symptoms. METHOD: A retrospective observational review of 172 ankle MRI scans was carried out independently by two fellowship trained musculoskeletal Radiologists. Correlation between abnormal labral changes, other ankle joint findings and patient symptomatology was performed. RESULTS: Abnormal labral changes were seen in 26% of the MRI scans (n = 44/172) and included signal change, contour abnormality with heterogeneous signal change, linear fluid filled clefts, multidirectional fluid filled clefts, and a macerated labrum. There was a statistically significant association between abnormal labral changes and the presence of Stieda process/os trigonum (P = 0.001), talocrural joint osteoarthritis (P = 0.0003), paralabral cysts (P = 0.0001), imaging features of posterior impingement (P = 0.01), and both medial (P = 0.005) and lateral (P = 0.01) ankle ligament injuries. However, there was no statistically significant association between abnormal labral changes and patient symptoms. CONCLUSION: The posterior ankle labrum can develop a spectrum of abnormal MRI appearances in patients with other ankle joint abnormalities. Although this study showed no correlation between patients' symptoms and posterior ankle labral changes, larger studies are needed to examine the biomechanical alterations that may arise from these labral changes.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".