Thoracic Myelopathy Caused by Thoracic Degenerative Spondylolisthesis and Lumbar Scoliosis
Bibliographic record
Abstract
INTRODUCTION: Spine deformities, including degenerative spondylolisthesis and scoliosis, are caused by several factors such as intervertebral disk degeneration and facet joint arthrosis, leading to spinal instability. Degenerative spondylolisthesis of the thoracic spine is less common because of the stabilizing properties of the rib cage and facet joints in the anterior-posterior position. METHODS: A 70-year-old female patient reported of back pain and left lower extremity weakness. The patient's premorbid ambulation status was wheelchair-bound because of right-sided monoparesis caused by a history of cerebral palsy. Neurological examination revealed grade 1 left-sided hip flexion and knee extension. RESULTS: Radiological findings showed lumbar scoliosis, severe disk degeneration, degenerative spondylolisthesis with facet arthrosis, and yellow ligament hypertrophy at T10-T12. Increased high signal intensity in T2-weighted magnetic resonance imaging and cord compression was observed at T10-T11, indicating thoracic myelopathy. We performed total laminectomy and posterior instrumented fusion at T10-T12. At a 3-month follow-up, the patient's motor grade improved to grade 4. CONCLUSION: Thoracic myelopathy in our case was caused by segmental instability, including multilevel lower thoracic degenerative spondylolisthesis, the presence of ossification of the ligament flavum, and lumbar scoliosis. This rare case, involving multiple complex spinal conditions, provides valuable insights into the development of thoracic myelopathy.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".