Platelet Rich Plasma Injections In Young And Old Human Subjects

Recruiting now · Phase 2 · Has a placebo group

Conditions studied: Osteoarthritis, Articular Cartilage, Musculoskeletal Disorders

In brief

This is a randomized, double-blind, placebo-controlled phase 2 study with a secondary crossover phase at the end of the initial trial to ensure all subjects receive one PRP injection. The goal is to identify what proteins change in the blood following repeated intraarticular knee PRP injections in patients with knee osteoarthritis. The objective is to determine the protein changes resulting from a single autologous PRP injection (5 mL) in comparison to a normal saline control. About 60 subjects will take part in this study by two age groups at UCSF into the following arms: Arm A: PRP injection; Arm B: normal saline injection control. The study aims to demonstrate what benefits PRP has on knee osteoarthritis and methods to best achieve biologic effects. Subjects with a diagnosis of knee osteoarthritis ages 18-45 and 46-70 years old presenting to a University Based sports medicine clinic will be screened for potential eligibility. Subjects who meet all qualifying requirements will be recruited from UCSF's orthopedic and primary care clinics. Subjects will be on study for up to 26 weeks Screening: up to 14 days Treatment: injection of PRP or normal saline; subjects can cross over at week 12 to a PRP if originally in the control injection group Follow-up: 2 weeks post-baseline injection, 12 weeks postbaseline, (14 weeks if crossover patient), 26 weeks.

Key facts

Study ID: NCT06451120
Run by: University of California, San Francisco
People needed: 60
Starts: 2024-06-01
Expected to finish: 2027-02-16
Last updated by the study team: 2026-03-19

Who can join

Age: 18 and older, up to 70. Sex: any. Healthy volunteers: accepted.

You may qualify if…

Grade 1-3 KL score will be recruited;
Symptoms of knee osteoarthritis for at least 3 months before presentation in one knee;
Have symptomatic complaints from osteoarthritis pain in no other joint affecting the hips, ankles or unaffected knee;
Will be able to attend and perform physical therapy.
English-speaking

You may not qualify if…

Patients will be excluded if:
Received injection therapy for knee osteoarthritis in the past 6 months
Have signs of concomitant osteoarthritis of 1 or more other major joints of the lower extremities that impair their daily activity level
History of septic arthritis
Have underwent a previous knee surgery specifically for osteoarthritis or osteochondral defects less than 1 year before randomization (i.e. autograft or allograft surgery
High tibial osteotomy, partial knee replacement, patellar resurfacing), total knee replacement or existing surgical hardware in the knee
Patient with platelet disorders, bleeding disorder
Patient with rheumatologic disease, automimmune disorder, immunocompromised status, active history of cancer
Patient taking Chemotherapy, need for regular prednisone or antiinflammatory used
Pregnant, breastfeeding, or unwilling to practice birth control during participation in the study.
Uncontrolled illness, physical disability, or other contraindication to aerobic exercise training including, but not limited to:
i. Acute myocardial Infarction (within 5 days of any planned study procedure); ii. Unstable angina; iii. Uncontrolled arrhythmia causing symptoms or hemodynamic compromise; iv. Recurrent syncope; v. Active endocarditis; vi. Acute myocarditis or pericarditis; vii. Symptomatic severe aortic stenosis; viii. Uncontrolled heart failure; ix. Acute (within 3 months) pulmonary embolus or pulmonary infarction; x. Thrombosis of lower extremities; xi. Suspected dissecting aneurysm; xii. Uncontrolled asthma; xiii. Pulmonary edema; xiv. Room air desaturation at rest ≤85%; xv. Respiratory failure; xvi. Acute non-cardiopulmonary disorders that may affect exercise performance or be aggravated by exercise (ie infection, renal failure, thyrotoxicosis); and xvii. Mental impairment leading to inability to cooperate.

Where it is running

University of California — San Francisco, California, United States (enrolling)

Full record on ClinicalTrials.gov

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