Platelet-rich plasma injection for symptomatic relief of disability associated with traumatic knee arthritis: a case report
Bibliographic record
Abstract
Multimodality is the mainstay of osteoarthritis (OA) treatment and intra-articular platelet-rich plasma (PRP) injection is gaining acceptance due to its regenerative properties and being minimally invasive. We present a young woman with Kellgren-Lawrence grade 3 post-traumatic OA in the left knee who refused surgery and opted for pain clinic follow-up. Five PRP injections in intervals of 4 to 9 months were administered in the past 2 years in addition to oral analgesia when necessary. Five ml of PRP was prepared via the double-spin open method and injected under ultrasound guidance to the left knee joint. Visual analogue scale (VAS) for pain was recorded at pre-procedure, and at 1-week and 1-month post-procedure. The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) was recorded at pre-procedure and 1-month post-procedure. PRP injection successfully reduced the VAS from 5 to 3 at both 1-week and 1-month post-procedure, and resulted in a WOMAC reduction of 54% with improvement in all WOMAC subscales at 1-month post-procedure. Our case showed that PRP injection demonstrated a positive effect on pain relief and physical function improvement in traumatic knee OA.
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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) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.007 | 0.004 |
| 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".