532 IMAGING OF MUELLER-WEISS SYNDROME: A CASE STUDY OF ADULT-ONSET AVASCULAR NECROSIS OF THE NAVICULAR BONE.
Bibliographic record
Abstract
<h3>Introduction</h3> Adult-onset spontaneous osteonecrosis of the navicular bone is a rare disorder known as Mueller-Weiss syndrome. Patients with this disorder present with a painful clinical course and progressive deformity. Koehler9s disease, spontaneous osteochondrosis of the navicular bone in children, is a separate entity, and should not be confused with Mueller-Weiss syndrome. These disorders differ not only in age at onset but also in clinical outcome and radiological findings. Mueller first described osteonecrosis of the navicular bone in adults and summarized his radiological findings as medial and/or dorsal protrusion of the navicular bone associated with collapse of the lateral aspect of the bone. Current literature suggests both early and late radiological changes. Initially there is loss of volume and increased radiodensity observed in the lateral aspect of the navicular bone. This is followed by a comma-shaped navicular bone and dorsal protrusion and fragmentation. Fracture lines may also be visualized on CT, and a homogeneous decrease in signal intensity of the navicular bone can be seen on T1-weighted MR images. <h3>Discussion</h3> Here we present an interesting case of adult-onset avascular necrosis of the navicular bone. The patient9s initial presentation, diagnostic work-up, and radiological findings will be discussed. <h3>Conclusion</h3> Mueller-Weiss syndrome is a difficult diagnosis to make. However, diagnosis can be aided by radiological images especially with CT and MR guidance. We present this case in the hope of increasing awareness of this disease and to demonstrate some of the common radiological findings that can be used to aid diagnosis.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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".