Tuberculosis of the foot mimicking Charcot arthropathy
Bibliographic record
Abstract
Mycobacterium tuberculosis bone and joint infection accounts for 2% to 3% of all tuberculosis cases but is uncommon in the foot. A 32-year-old woman had foot pain and swelling, and radiographs showed midfoot bony destruction and fragmentation. She was diagnosed with Charcot arthropathy, but had no neuropathy or improvement despite total contact casting. Bone biopsy 16 months after initial presentation did not show acid-fast bacilli on smear, but M. tuberculosis was recovered on culture; concurrent chest radiographs showed patchy and nodular opacities in both upper lung zones, consistent with previous pulmonary tuberculosis. Sputum smear showed acid-fast bacilli and culture yielded M. tuberculosis. In retrospect, the patient was at increased risk for M. tuberculosis infection because of previous residence in Myanmar and India. Clinicians should consider M. tuberculosis infection in the differential diagnosis of Charcot arthropathy for patients who have exposure history and absence of risk factors for Charcot arthropathy.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".