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Active, not recruitingNCT07473232ClinicalTrials.gov record

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

THE QUICK READ

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) -

Understand screening

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

Prepare your questions

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

No results are flagged as posted.

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)

A HUMAN NEXT STEP

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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