Comparing PRP and HA injections for knee osteoarthritis
Official title: THE USE OF FRESH PRP VS HA IN THE TREATMENT OF OSTEOARTHRITIS OF THE PATELLOFEMORAL JOINT Randomized Controlled Clinical Trial
Run by Istituto Ortopedico Rizzoli · NCT04937998 · Data updated 2026-11-12
This study is testing whether injections of platelet-rich plasma or hyaluronic acid can help people with knee osteoarthritis feel better over two years.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 30 Years to 65 Years |
| Sex | All |
| Enrollment | 166 (estimated) |
| Sponsor | Istituto Ortopedico Rizzoli Academic / other |
| Locations | 1 site (Bologna) |
| Status | Recruiting |
| Started | October 26, 2022 |
| Main results expected | September 2026 |
| Study ends | September 2026 |
| Registry record updated | December 4, 2025 |
| Trial ID | NCT04937998 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals aged 30 to 65 with isolated patellofemoral osteoarthritis symptoms and radiographic evidence of the condition.
✕Probably not a fit
Patients with recent knee surgeries, significant comorbidities, or those unable to consent may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to evaluate the clinical outcomes of patients with patellofemoral osteoarthritis receiving either autologous platelet-rich plasma (PRP) or hyaluronic acid (HA) injections. A total of 166 patients will be enrolled in a double-blinded randomized controlled trial, with one group receiving PRP and the other receiving HA. Participants will be monitored over a 24-month period, with clinical evaluations and questionnaires administered at baseline and follow-up visits at 2, 6, 12, and 24 months to assess treatment effectiveness.
Why it matters
Potential benefit: If successful, this study could provide a more effective treatment option for patients suffering from patellofemoral osteoarthritis.
How similar studies have gone: Previous studies have shown promising results with both PRP and HA injections in treating osteoarthritis, suggesting potential for success in this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Age between 30 and 65; 2. Signs and symptoms of isolated patellofemoral osteoarthritis present in one or both knees; 3. Radiographic signs of isolated patellofemoral osteoarthritis (according to Iwano et al stage 1-3 classification) or chondropathy (assessed on MRI) with K-L grade of the other compartments ≤ 2. \[PMID: 2302884 - PMID: 27979409\] ; 4. Hemoglobin \> 11 g/dl; Platelet count \> 150,000 plt/mm3 (Recently performed CBC exam); 5. No clinically significant electrocardiographic alterations (Recently performed ECG). 6. Ability and consent of patients to actively participate in clinical follow-up; 7. Signature of informed consent. Exclusion Criteria: 1. Patients unable to express consent; 2. Patients who have undergone intra-articular infiltration of another substance within the previous 6 months; 3. Patients undergoing knee surgery within the previous 12 months; 4. Patients with malignant neoplasms; 5. Patients with rheumatic diseases; 6. Patients with diabetes; 7. Patients with hematologic diseases (coagulopathies); 8. Patients on anticoagulant-antiaggregant therapy; 9. Patients with thyroid metabolic disorders; 10. Patients abusing alcoholic beverages, drugs or medications; 11. Body Mass Index \> 35; 12. Patients who have taken NSAIDs in the 3 days prior to blood draw; 13. Patients with cardiovascular disease for which a 60 mL blood draw would be contraindicated; 14. Patients with a recently performed blood test with Hb\< 11 g/dl and Platelets \< 150,000 plt/mm3. 15. Previous treatment of patellar dislocation 16. Iwano score of grade 4.
Where it's running
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Istituto Ortopedico Rizzoli
Bologna, Italy Recruiting
Study contacts
- Principal investigator: Alessandro Di Martino, MD — Istituto Ortopedico Rizzoli
- Study coordinator: Roberta Licciardi, MSc
- Email: roberta.licciardi@ior.it
- Phone: 0516366567
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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FDG PET/MRI to Find Painful Inflammation in the Patellofemoral Joint
This study tests whether FDG PET/MRI can locate inflammation causing knee pain in people with patellofemoral joint osteoarthritis.
-
Engineered cartilage grafts for treating knee osteoarthritis
This study is testing a new cartilage treatment made from nasal cells to see if it helps people with knee osteoarthritis feel better compared to standard care options.
-
Evaluating a new implant system for knee cartilage degeneration
This study is testing a new knee implant to see if it can help people with cartilage damage feel less pain and move better compared to a standard surgery.
-
Treatment for knee osteoarthritis using engineered cartilage from nasal cells
This study is testing whether a new cartilage treatment made from nasal cells can help people with knee osteoarthritis feel less pain and improve their knee function compared to standard injections.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.