SynthesisOsteoarthritis and cartilage2011
Therapeutic trajectory following intra-articular hyaluronic acid injection in knee osteoarthritis--meta-analysis.
Synthesis in Osteoarthritis and cartilage, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02671565 (Comparative Effectiveness of Hyaluronic Acid Injections to Prevent/Delay Knee Surgical Interventions Among Patients With Knee Osteoarthritis), which is not on this map. Cited by 150 papers, 15 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Comparative Effectiveness of Hyaluronic Acid Injections to Prevent/Delay Knee Surgical Interventions Among Patients With Knee Osteoarthritis
Who cites it
150 citing papers in PubMed, 15 syntheses or guidelines pooled it.
- Comparative efficacy of platelet-rich plasma monotherapy versus combination therapies for knee osteoarthritis: a systematic review and network meta-analysis.Journal of orthopaedic surgery and research · 2026Pooled it
- Intra-articular Hyaluronic Acid Treatments for Knee Osteoarthritis: A Systematic Review of Product Properties.Cartilage · 2023Pooled it
- Efficacy and Safety of Hyaluronic Acid Intra-articular Injection after Arthroscopic Knee Surgery: A Systematic Review and Meta-analysis.Orthopaedic surgery · 2023Pooled it
- Pooled it
- Differentiating factors of intra-articular injectables have a meaningful impact on knee osteoarthritis outcomes: a network meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Pooled it
- Consequences on Private Insurance Coverage: The AAOS Clinical Practice Guidelines and Hyaluronic Acid Injections.The Journal of bone and joint surgery. American volume · 2020Guideline
- Effects and safety of the combination of platelet-rich plasma (PRP) and hyaluronic acid (HA) in the treatment of knee osteoarthritis: a systematic review and meta-analysis.BMC musculoskeletal disorders · 2020Pooled it
- A Comparison of Treatment Effects for Nonsurgical Therapies and the Minimum Clinically Important Difference in Knee Osteoarthritis: A Systematic Review.JBJS reviews · 2019Pooled it
- Meta-analysis Comparing Platelet-Rich Plasma vs Hyaluronic Acid Injection in Patients with Knee Osteoarthritis.Pain medicine (Malden, Mass.) · 2019Pooled it
- Safety of Intra-articular Hyaluronic Acid Injections in Osteoarthritis: Outcomes of a Systematic Review and Meta-Analysis.Drugs & aging · 2019Pooled it
- The Impact of Excluding Patients with End-Stage Knee Disease in Intra-Articular Hyaluronic Acid Trials: A Systematic Review and Meta-Analysis.Advances in therapy · 2019Pooled it
- Intra-articular platelet-rich plasma versus hyaluronic acid in the treatment of knee osteoarthritis: a meta-analysis.Drug design, development and therapy · 2018Pooled it
- The efficacy of multiple versus single hyaluronic acid injections: a systematic review and meta-analysis.BMC musculoskeletal disorders · 2017Pooled it
- Intra-articular Hyaluronic Acid in Treating Knee Osteoarthritis: a PRISMA-Compliant Systematic Review of Overlapping Meta-analysis.Scientific reports · 2016Pooled it
- Effectiveness of hyaluronic acid administration in treating adhesive capsulitis of the shoulder: a systematic review of randomized controlled trials.BioMed research international · 2015Pooled it
- Cartilage Regeneration Potential in Early Osteoarthritis of the Knee: A Prospective, Randomized, Open, and Blinded Endpoint Study Comparing Adipose-Derived Mesenchymal Stem Cell (ADSC) Therapy Versus Hyaluronic Acid.International journal of molecular sciences · 2025Trial
- Effectiveness of prior intra-articular corticosteroid injection in elderly patients with knee osteoarthritis undergoing progressive resistance training: a randomized controlled trial.Advances in rheumatology (London, England) · 2025Trial
- Clinical efficacy of cell-free fat extract and its effects on bone marrow edema in patients with early to mid-stage knee osteoarthritis: a clinical trial in comparison with hyaluronic acid.Journal of orthopaedic surgery and research · 2025Trial
- Comparing efficacy of a single intraarticular injection of platelet-rich plasma (PRP) combined with different hyaluronans for knee osteoarthritis: a randomized-controlled clinical trial.BMC musculoskeletal disorders · 2022Trial
- Comparison between the effects of ultrasound guided intra-articular injections of platelet-rich plasma (PRP), high molecular weight hyaluronic acid, and their combination in hip osteoarthritis: a randomized clinical trial.BMC musculoskeletal disorders · 2022Trial
90 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
objectiveTo evaluate the therapeutic trajectory of intra-articular hyaluronic acid (IAHA) vs placebo for knee osteoarthritis (OA).
designOur data sources include Medline, EMBASE, CINAHL, BIOSIS, Web of Science, Google Scholar, Cochrane database; hand searched reviews, manuscripts, and, supplements; author contacts for unpublished data. Randomized trials that reported effects of IAHA vs placebo on knee OA were selected based on inclusion criteria. We computed effect sizes for change from baseline at 4, 8, 12, 16, 20 and 24 weeks, using Bayesian random effects model. We performed multivariate analyses adjusting for correlation between time points. Meta-regressions were performed adjusting for potential confounders.
resultsThe 54 eligible trials included 7545 participants. The conduct and quality of these trials varied in number of aspects. The effect size (ES) favored IAHA by week 4 (0.31; 95% CI 0.17, 0.45), reaching peak at week 8 (0.46; 0.28, 0.65), and then trending downwards, with a residual detectable effect at week 24 (0.21; 0.10, 0.31). This therapeutic trajectory was consistent among the subset of high quality trials and on multivariate analysis adjusting for correlation between time points.
conclusionsOur meta-analysis highlights a therapeutic trajectory of IAHA for knee OA pain over 6 months post-intervention. With this additional perspective, we are able to infer that IAHA is efficacious by 4 weeks, reaches its peak effectiveness at 8 weeks and exerts a residual detectable at 24 weeks. On the other hand, the peak effect size (0.46; 0.28, 0.65), is greater than published effects from other OA analgesics [acetaminophen (ES=0.13; 0.04, 0.22); NSAIDs (ES=0.29; 0.22, 0.35); COX-2 inhibitors (ES=0.44; 0.33, 0.55)]. An effect size above 0.20 is considered to be clinically relevant on an individual patient basis in chronic pain conditions such as knee OA. Thus, its properties could have utility for certain clinical situations, or in combination with other therapies.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.