Prevalence of the persistent median artery in patients undergoing surgical open carpal tunnel release: A case series
Bibliographic record
Abstract
Carpal tunnel syndrome is a common condition in adults with an estimated prevalence of up to 5% in the general population. The presence of a persistent median artery is an important consideration for plastic and orthopedic surgeons who frequently perform carpal tunnel release. This artery may persist into adulthood and constitute a significant supply of blood to the hand, sometimes compressing the median nerve. In this case series, we describe the prevalence of the persistent median artery identified intraoperatively in Polish subjects undergoing surgical open carpal tunnel release. The data regarding the prevalence of persistent median artery were retroactively collected postoperatively from the standard surgical protocols. Persistent median artery was identified in 36 out of 1285 operated hands (2.8%). The observed PMAs were identified in 15 (2.0%) cases out of 750 right upper limbs and in 21 (3.9%) cases out of the 535 left upper limbs. Persistent median artery can be present in the operating field of any surgeon that performs carpal tunnel release and any other surgical procedures in the wrist region. Therefore awareness of its presence is crucial to minimize intraoperative complications such as bleeding or digital ischemia.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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) | 0.002 | 0.000 |
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".