Comparison of Platelet-rich Plasma and Activated Cytokine-rich Serum Injection Treatments in Patients With Knee Osteoarthritis. (KOA PRP ACS)
Knee Arthritis Osteoarthritis · Platelet Rich Plasma Injection · Conditioned Serum
What this study involves
The registry does not currently label this study as recruiting. Ask about its status before planning a screening visit.
- Study type
- Interventional
- Phase
- Not applicable
- Age range
- 40 years - 80 years
- Sex eligible
- All sexes
- Healthy volunteers
- Not accepted
- Participants
- 60 Estimated
These are starting points, not an eligibility decision. The research team must review the full requirements.
About the research
The effects of single dose injection of platelet rich plasma or conditioned serum in the knee joint in patients with knee osteoarthritis will be compared
Read the full description
Patients with early grade bilateral knee osteoarthritis (Kellgren Lawrence grade 1 or 2) will be divided into 2 groups. One group of patients will be injected with single dose of autologous platelet rich plasma (PRP) in the knee joints. Other group of patients will be injected with eqiuvolume of autologous conditioned serum (CS) (also known as activated cytokine rich serum) in the knee joints. Patients' serum before injection, the treatment product (PRP and CS), patients serum 30 min after injection will be investigated for IL-1β, IL-1Ra, PDGF-BB, IGF-1, TGF-β and TNF-α. Patients' serum 1 week and 1 month after injection will be investigated for MMP-13, COMP by ELISA. Patients will also be investigated for visual pain scale, WOMAC (Western Ontorino and Mc Master) scale range of motion, ultrasonographic tibiofemoral cartilage thickness measurement and functional tests including the 30-second chair test, stair climb test, 40 meter fast paced walk test, timed up and go test, 6-minute walk test, and walking speed in the first week, first month and third month after injection.
Who may be able to participate?
The list below is the sponsor’s full registry wording. It can include conditions, prior treatment, test results and other requirements. A match in search does not mean you qualify.
Inclusion Criteria:
1. Diagnosis of knee osteoarthritis according to ACR criteria at least 6 months ago.
2. Being between grade 1-2 according to the Kellgren-Lawrence radiological classification.
3. Not having had PRP injection in the last year.
4. Knee pain ≥ 5 according to the visual pain scale.
Exclusion Criteria:
1. Those with significant neurological or cardiovascular disorders.
2. Those with active thrombovascular disease.
3. Those with joint or skin infections.
4. Those who have recently had an infectious disease.
5. Those infected with Hepatitis B, C, and HIV.
6. Those who have received intra-articular knee injections (hyaluronic acid, PRP, corticosteroids, and others) within the last year.
7. Those who use oral corticosteroids.
8. Those who have used NSAIDs within the last week.
9. Those who have used anti-platelet or anti-aggregant drugs within the last week.
10. Those with coagulation disorders.
11. Those with hemoglobin \<10 g/dl and platelet count \<100,000
12. Those with cancer.
13. Pregnant or breastfeeding women, drug addicts.
14. Those scheduled for knee surgery or arthroscopy, or those who have undergone knee surgery or arthroscopy.
15. Those with diseases causing secondary osteoarthritis:
1. post-traumatic,
2. congenital or developmental diseases
1. Local diseases (leg length discrepancy, varus, valgus deformities, hypermobility syndromes, scoliosis)
2. Generalized diseases (Bone dysplasias, Metabolic disorders (hemochromatosis, ochronosis, Gaucher disease, hemoglobinopathy, Ehlers-Danlos disease))
3. Calcium storage diseases (calcium pyrophosphate storage disease, etc.)
4. Other bone and joint diseases (avascular necrosis, rheumatoid arthritis, gouty arthritis, septic arthritis, Paget's disease, osteoporosis, osteochondritis)
5. Other diseases
1. Endocrine diseases (Diabetes mellitus, acromegaly, hypothyroidism, hyperthyroidism)
2. Neuropathic arthropathy (Charcot joint)
3. Other (Frost, Kashin-Beck disease, Caisson disease) -
Treatment, groups and participation
The registry may describe treatments and study duration without a complete visit calendar. Ask the study team for the exact schedule, procedures, risks, costs and alternatives. Keep your usual care plan unless your treating clinician tells you otherwise.
- Assignment
- Random assignment
- Masking
- Double masked
PRP group
patients with knee osteoarthritis who will be injected with autologous PRP
Drug: Autologous Platelet-Rich Plasma (PRP)
conditioned serum group
patients with knee osteoarthritis who will be injected with autologous conditioned serum
Drug: Conditioned serum (CS)
Autologous Platelet-Rich Plasma (PRP) DRUG
Autologous Platelet-Rich Plasma (PRP) will be injected intra-articularly in patients with knee osteoarthritis
Conditioned serum (CS) DRUG
Autologous conditionedserum (CS) will be injected intra-articularly in patients with knee osteoarthritis
What researchers are measuring
Outcome measures describe what is being studied. They are not proof that a treatment works.
Primary measures
Visual pain scale score
Time frame: Visual pain scale score (min 0-max 10) will be measured at the beginning ofthe study, 1 week, 1month and 3 months after the injection.
Visual pain scale score (min 0-max 10), higher scores indicate better results
Review the complete result tables and limitations in the official record.
Open official results ↗Research locations (1)
The overall study status and a local site’s status can differ. Confirm that location’s availability before traveling.
1 locations
Pamukkale University HospitalPamukkale, Denizli, Turkey (Türkiye)Status unknown
Study team and timeline
- Lead sponsor
- Pamukkale University
- Study start
- Apr 1, 2026 Actual
- Primary completion
- Jan 18, 2027 Estimated
- Study completion
- Feb 27, 2027 Estimated
- First posted
- Mar 16, 2026 Actual
- Last updated
- Nov 9, 2026 Actual
Official study contacts
No central contact is listed. Check the locations and the official record.
Official study title
Comparison of Platelet-rich Plasma and Activated Cytokine-rich Serum Injection Treatments in Patients With Knee Osteoarthritis. (KOA PRP ACS)
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Source: ClinicalTrials.gov API v2. Information is submitted by sponsors and investigators. NLM does not approve the safety or science of all listed studies. Registry disclaimer.
Retrieved: Nov 12, 2026 · Last registry update: Nov 9, 2026
