Successive thoracic anterolateral intervertebral disc herniations with ossification-fusion: a cadaveric case analysis with MRI and clinical review
Bibliographic record
Abstract
Background Intervertebral discs (IVDs) permit resilient deformability and shock absorption between vertebrae. IVD herniation from damage or disease most commonly occurs in the lumbar and cervical spines, in the posterolateral direction, and to a single IVD. This investigation seeks to examine a unique case of successive thoracic anterolateral IVD herniations with gross and magnetic resonance imaging (MRI) analyses and present the case with a literature-based clinical narrative. Methods The case was discovered in an adult human cadaver. T1-weighted MRI was performed on the implicated spine, and serial cross-sectioning was completed through each IVD. The herniations were photographed at each stage, and linear parameters of the spinal pathologies were measured. Results The ossified herniations extruded 11.1 ± 2.1 mm from the typical IVD border, and the ossified bridging over the vertebral bodies extruded 6.9 ± 2.6 mm from the typical vertebral body border. The extrusions displaced the functionality of the anterior longitudinal ligament 7.37 mm left of midline, and comparison of gross in situ and cross-sectional imaging with MRI illustrated the extent of IVD herniation and vertebral fusion in the clinical perspective. Conclusions The present cadaveric case involving multiple uncommon features of IVD herniation accompanied by MRI and clinical narrative may enhance clinical awareness among spine specialists, particularly in recognizing uncommon presentations of thoracic IVD ossification and vertebral hyperostosis. This report may also serve as a valuable reference for to clinical anatomists, Doctors of Chiropractic Medicine, spine neurosurgeons, and other healthcare experts when discussing or treating related patient cases.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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; 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".