Intrasubstance Tear of the Short Head of Biceps With Musculocutaneous and Median Nerve Compression
Bibliographic record
Abstract
Traumatic intrasubstance ruptures of the biceps brachii are rare. Injury to its tendinous insertion or origin is most common. Isolated short head injuries are rare, and musculocutaneous nerve involvement has been reported for these injuries. We present a unique case report of a young, healthy man who sustained a symptomatic median and musculocutaneous nerve compression resulting from an intrasubstance tear of the short head of the biceps after a snow blower injury. Short belly rupture with injury-associated scar tissue compression of both the median and musculocutaneous nerves was identified in the operating room. Microsurgical decompression and tendon repair with a modified Mason-Allen configuration using 0-Vicryl suture were done. By 11 months postoperative, the patient experienced resolution of his arm pain, extension and flexion improvement from 0 to +140 to +15 to +150, elimination of the Tinel sign and of concomitant arm deformity, and improvement of elbow strength.
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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 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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".