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Synovial Fluid Withdrawal or PRP Injection For Acute ACL Tears and Cytokines

Does Arthrocentesis and PRP For Acute ACL Tears With Hemarthrosis Decrease Inflammatory Cytokines At Time Of Surgery: A Prospective Randomized Control Trial (RCT)

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07142369
Enrollment
99
Registered
2025-08-26
Start date
2026-09-01
Completion date
2028-12-01
Last updated
2026-06-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anterior Cruciate Ligament (ACL) Rupture, Posttraumatic Osteoarthritis

Keywords

osteoarthritis

Brief summary

The purpose of this study is to determine what effects the withdrawal of excess knee joint fluid or the injection of a factor from the blood has on swelling after a sudden anterior cruciate ligament (ACL) rupture of the knee.

Detailed description

The body responds to different stresses by releasing factors in the blood and fluids in response to stressors like injury, surgery or certain treatments. Some of these factors help heal and some make the injury and body swell (inflammation). In this study we want to see if the intervention of withdrawing fluid the knee or the addition of an enriched healing factor called platelet rich plasma (PRP) injected in the knee influences the body to produce healing factors in the knee joint fluid.

Interventions

PROCEDURESynovial Fluid withdrawal at the preoperative clinic visit

Synovial Fluid withdrawal at the preoperative clinic visit

PROCEDUREPlatelet-Rich Plasma (PRP) preparation and injection

Platelet-Rich Plasma (PRP) preparation and injection

PROCEDURESynovial fluid withdrawal at the time of surgery

Synovial fluid withdrawal at the time of surgery

PROCEDURE3mL synovial fluid withdrawn at the preoperative visit

3mL synovial fluid withdrawn at the preoperative visit

Sponsors

Rush University Medical Center
Lead SponsorOTHER
Arthroscopy Association of North America
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Intervention model description

Randomized control trial 1:1:1 study assignment (33 subjects Arm 1 two arthrocentesis withdrawals; 33 subjects Arm 2 two arthrocentesis withdrawals with PRP injection; 33 subjects Arm 3 a very small arthocentesis withdrawal and one standard arthrocentesis withdrawal and no PRP injection)

Eligibility

Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
No

Inclusion criteria

* Age 18 - 50 * English-speaking * Clinical evidence of ACL rupture with swelling * Participant must be undergoing ACL reconstruction surgery

Exclusion criteria

* Age \<18 or \>50 * Presentation \>3 weeks after initial injury * Previous traumatic ipsilateral (same side) knee injury consistent with chronic ACL tear or prior ACL surgery * \> Kellgren-Lawrence grade 2 changes on preoperative x-ray * History of hemophilia or inflammatory arthropathy (e.g., rheumatoid arthritis)

Design outcomes

Primary

MeasureTime frameDescription
Concentration of Collagen Type II CytokineEnrollment up to surgeryBreakdown cytokine found in damaged cartilage

Countries

United States

Contacts

CONTACTAdam Yanke, MD, PhD
cartilage.restoration@rushortho.com(312) 432-2818
CONTACTJorge Chahla, MD, PhD
jorge.chahla@rushortho.com
PRINCIPAL_INVESTIGATORAdam Yanke, MD, PhD

Associate Professor and Surgeon

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 19, 2026