Efficacy and safety of undenatured collagen type II in modulating knee joint function in healthy and osteoarthritis subjects: a systematic review and meta-analysis
Bibliographic record
Abstract
Collagen has emerged as a potential pharmacotherapeutic intervention for knee osteoarthritis (OA). This study evaluates the effectiveness and safety of undenatured collagen type II (UC-II) among patients with knee OA and healthy subjects without joint-related disease but experiencing activity-related joint discomfort. Systematic literature search was conducted through PubMed, Embase, and Cochrane up to June 2024, and a total of 17 articles were included in the final analysis. The primary outcome was efficacy: Western Ontario and McMaster Universities (WOMAC) score, visual analog scale (VAS) score, Lequesne’s functional index (LFI), and knee range of motion (ROM). The secondary outcome was safety: adverse events (AEs) and serious AEs. In patients with knee OA, UC-II significantly decreased knee OA symptoms and improved the quality of life (QoL) by significant reductions of WOMAC scores (pain: −9.24 [P = 0.004], stiffness: −6.47 [P = 0.091], physical function: −7.31 [P = 0.043], total: −9.83 [P < 0.001]), VAS (−1.87; P = 0.006), LFI (−2.17; P < 0.001) and knee ROM. Treatment in healthy people reduced VAS scores and significantly increased the step number to the first onset of pain over the baseline (P < 0.05). The treatment was safe with no significant individual AE (headache: RR = 0.34, diarrhoea: RR = 0.48) and total AE (RR = 1.0090) in both populations. This study highlights the benefits and safety of UC-II to improve knee health and QoL in patients with knee OA and healthy subjects.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".