Pain in the hand caused by a previously undescribed mechanism with possible relevance for understanding regional pain
Bibliographic record
Abstract
Background and aims A previously undescribed mechanism of pain in the ulnar side of the hand was observed in a series of four patients. All were found to have a sensitive point in the first interspace of the hand and possible entrapment of a terminal branch of ulnar nerve piercing the fascia in the first interphalangeal webspace was suggested. Methods Pressure on the sensitive point reproduced the ulnar sided hand pain. Diagnostic and therapeutic injection of the mixture of local anesthetic and corticosteroid were performed. The degree and duration of relief of pain was noted. Results In individuals with recent onset hand pain of this type the injections abolished pain for 2 or more years. In individuals with long-standing pain (longer than 3-6 months) the pain was abolished for periods of time lasting several hours to several weeks. The correspondence of the point, where injections were done with acupuncture point LI4 was noted. Conclusions The location of possible nerve entrapment corresponds with an acupuncture point LI4 and may additionally represent a previously undescribed myofascial trigger point. Implications The suggested mechanism of ulnar sided hand pain represents a miniature chronic constriction injury similar to the animal model of neuropathic pain and may have relevance for regional pain elsewhere in the body.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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".