Ultrasound-Guided Platelet-Rich Plasma Injection for a Medial Collateral Ligament Partial Tear of the First Metatarsophalangeal Joint
Bibliographic record
Abstract
The medial collateral ligament (MCL) of the first metatarsophalangeal (MTP) joint is key in maintaining joint stability and function. Evidence-based conservative management strategies for partial tears of the first MTP MCL are lacking. Historically, athletes experiencing persistent pain despite conservative management have required surgical intervention as the next step. In this case, a 34-year-old principal ballet dancer with a partial proximal MCL tear of the first MTP joint failed to improve with conservative treatment, including physical therapy. Treatment with leukocyte-rich platelet-rich plasma to the injured MCL and leukocyte-poor platelet-rich plasma to the first MTP joint was pursued, leading to an improvement of valgus laxity from 5.5 to 3.0 mm on dynamic ultrasound assessments. A full return to dance was achieved at 12 weeks post-injection, and the patient remained symptom-free at 22-month follow-up.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".