ArticleOrthopaedic journal of sports medicine2021
Comparing Intra-articular Injections of Leukocyte-Poor Platelet-Rich Plasma Versus Low-Molecular Weight Hyaluronic Acid for the Treatment of Symptomatic Osteoarthritis of the Hip: A Double-Blind, Randomized Pilot Study.
Article in Orthopaedic journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01920152 (A Randomized Clinical Trial Evaluating Platelet Rich Plasma Versus Hyaluronic-Acid in the Short-term Treatment of Symptomatic OA), which is not on this map. Cited by 23 papers, 4 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.
A Randomized Clinical Trial Evaluating Platelet Rich Plasma Versus Hyaluronic-Acid in the Short-term Treatment of Symptomatic OA (Osteoarthritis) of the Hip
Who cites it
23 citing papers in PubMed, 4 syntheses or guidelines pooled it, 28 citations in OpenAlex.
- Comparison of Clinical Efficiency and Safety Between Intra-Articular Injection of Platelet-Rich Plasma and Hyaluronic Acid for Hip Osteoarthritis: A Systematic Review and Meta-Analysis.Pain research & management · 2026Pooled it
- Intra-articular Hyaluronic Acid Injections May Be Beneficial in Patients with Less Advanced Knee Osteoarthritis: A Systematic Review of Randomised Controlled Trials.Sports medicine (Auckland, N.Z.) · 2025Pooled it
- Efficacy and safety of biological products in hip osteoarthritis: a systematic review and meta-analysis of randomized controlled trials.Clinical rheumatology · 2025Pooled it
- State of art in intra-articular hip injections of different medications for osteoarthritis: a systematic review.BMC musculoskeletal disorders · 2021Pooled it
- Platelet-Rich Plasma Versus Bone Marrow Aspirate Concentrate for Hip Disorders: A Narrative Review of Biological Rationale, Clinical Evidence, and Research Priorities.Bioengineering (Basel, Switzerland) · 2026Review
- A Brief Overview and Update of Regenerative Medicine for the Treatment of Musculoskeletal Conditions.Current reviews in musculoskeletal medicine · 2026Review
- Comparing the Efficacy and Safety of Intra-articular Injection Treatments for Hip Osteoarthritis: A Systematic Review and Network Meta-analysis.Orthopaedic journal of sports medicine · 2026Review
- A Systematic Review of Recent Developments in Platelet-Rich Plasma Therapy in Hip Osteoarthritis: Variability in Protocols and Clinical Outcomes (2019-2024).Orthopedic research and reviews · 2026Review
- Effectiveness of platelet-rich plasma in pain management of osteoarthritis with developmental dysplasia of the hip: a double-blind, randomized controlled trial.Journal of hip preservation surgery · 2025Article
- Proper Patient Selection and Choosing the Right Treatment: The Recipe for Good Clinical Outcomes.Arthroscopy, sports medicine, and rehabilitation · 2025Article
- Risks of Intra-articular Hip Corticosteroid Injections Include Rapidly Progressive Osteoarthritis and Femoral Head Collapse in Patients With and Without Pre-existing Osteoarthritis: A Systematic Review.Arthroscopy, sports medicine, and rehabilitation · 2025Review
- Orthobiologic injections for hip osteoarthritis: A systematic review of clinical outcomes.Orthopedic reviews · 2025Article
- Regenerative Inflammation: The Mechanism Explained from the Perspective of Buffy-Coat Protagonism and Macrophage Polarization.International journal of molecular sciences · 2024Review
- Platelet-Rich Plasma for Knee and Hip Osteoarthritis Pain: A Scoping Review.Current reviews in musculoskeletal medicine · 2024Article
- Intra-Articular Platelet-Rich Plasma versus Hyaluronic Acid in the Treatment of Hip Osteoarthritis: A Cross-Sectional Analysis of the Overlapping Systematic Reviews.Therapeutics and clinical risk management · 2024Article
- Non-operative Treatment Options for Osteoarthritis in the Hip.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2023Review
- Review
- Is intra-articular injection of autologous micro-fragmented adipose tissue effective in hip osteoarthritis? A three year follow-up.International orthopaedics · 2023Article
- Comparison of clinical efficiency between intra-articular injection of platelet-rich plasma and hyaluronic acid for osteoarthritis: a meta-analysis of randomized controlled trials.Therapeutic advances in musculoskeletal disease · 2023Article
- Orthobiologic Injections for the Treatment of Hip Osteoarthritis: A Systematic Review.Journal of clinical medicine · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHyaluronic acid (HA) and leukocyte-poor platelet-rich plasma (LP-PRP) are 2 nonoperative treatment options that have been studied in patients with hip osteoarthritis (OA). PURPOSE: To compare the efficacy of intra-articular injections of low-molecular weight (LMW) HA and LP-PRP in patients with hip OA. STUDY
designRandomized controlled trial; Level of evidence, 1.
methodsA total of 34 patients (36 hips) presenting with signs of hip OA were randomized to receive 3 blinded, weekly intra-articular injections of either LP-PRP or LMW-HA. Patients were prospectively evaluated before injections and at 6 weeks and then at 3, 6, 12, and 24 months. The primary outcome, conversion to total hip arthroplasty (THA) or a hip resurfacing procedure, was analyzed along with secondary outcomes including the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score and hip range of motion.
resultsThe final analysis included 33 hips (mean Kellgren-Lawrence grade, 2.73) (LMW-HA: n = 14; LP-PRP: n = 19) in 31 patients (18 male; mean age, 53.8 years). Significantly more patients converted to THA or a hip resurfacing procedure in the LMW-HA group (7/14; 50.0%) (mean, 1.3 years after first injection) than the LP-PRP group (3/19; 15.8%) (mean, 0.73 years after first injection) (
conclusionIntra-articular hip injections of LP-PRP in patients with hip OA resulted in an improvement in WOMAC scores and hip internal rotation at 6 months and delayed the need for THA or a hip resurfacing procedure compared with treatment with LMW-HA. A longer follow-up is necessary to further compare the effects of LP-PRP and LMW-HA injections in patients with hip OA. REGISTRATION: NCT01920152 (ClinicalTrials.gov identifier).
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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.