S1 Tuberculosis Treated With Segmental Lumbopelvic Fixation
Bibliographic record
Abstract
In Brief Study Design. A case report. Objective. To describe an effective surgical option for sacral tuberculosis (TB). Summary of Background Data. Sacral TB is a rare cause of low back pain. A differential diagnosis of TB should always be made, especially in India where TB cases are on a rampant rise with increasing drug resistance and immunosuppressed population. Methods. A retrospective review. Results. We report on a 24-year-old woman with low back pain and radiculopathy. Magnetic Resonance Imaging (MRI) showed a destructive lesion in S1 body. Empirical antitubercular treatment was started elsewhere with no relief but worsening of the lesion. She underwent a Computed Tomography (CT)–guided biopsy and drug sensitivity test, which did not reveal anything. The patient was bedridden for almost a year. A lumbopelvic instrumented fixation and S1 body reconstruction with structural allograft was performed. Culture sensitivity revealed multidrug resistance. After surgery, the patient responded rapidly, and at 2-year follow-up, she is symptom-free. Conclusion. TB should always be considered as a differential diagnosis of sacral lesions, and identifying multidrug resistance is equally important in its treatment. Lumbopelvic fixation is a safe and reliable option as it unloads the S1 segment by achieving fixation in the lumbosacral spine and iliac wings. We present a 24-year-old woman with low back pain radiating to bilateral lower limbs diagnosed after magnetic resonance imaging and computed tomography with tuberculosis of S1 vertebra. She was treated for lumbopelvic fixation with pedicle screws and decompression. Biopsy revealed multidrug-resistant tuberculosis. After surgery, the patient responded rapidly, and currently at 2 years of follow-up, she is pain-free with no neurological deficit.
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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 | 0.000 | 0.000 |
| 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) | 0.002 | 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; both teacher heads agree on what is shown here.
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".