Efficacy at One Year of Combined Injections of Plasma Rich in Platelets and Hyaluronic Acid in Knee Osteoarthritis (ISPAG)

June 12, 2026 updated by: Centre Hospitalier Universitaire, Amiens
The French Society of Rheumatology cannot rule on the value of intra-articular injections of PRP due to the lack of hindsight and insufficient data. In fact, the injection protocols are very heterogeneous in terms of preparation method, the presence or not of leukocytes, the number of centrifugations, the volume injected, the ultrasound guidance, which makes it difficult to analyze the literature. The investigator objective is therefore to evaluate the effectiveness of combined injections of PRP and hyaluronic acid.

Study Overview

Status

Recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients benefiting, in the context of knee osteoarthritis, from viscosupplementation alone or from two injections of PRP, in combination with HA, at the Amiens University Hospital.

Description

Inclusion Criteria:

  • age : > 18 years old
  • Patients benefiting, in the context of knee osteoarthritis, from viscosupplementation alone or from two injections of PRP, in combination with HA, at the Amiens University Hospital.

Exclusion Criteria:

  • Patient refusal to use the data
  • Language barrier
  • Age less than 18 years old.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Retrospective

Cohorts and Interventions

Group / Cohort
PRP + HA
two injections of PRP (plasma rich in platelets ), in combination with HA (hyaluronic acid)
HA alone
HA (hyaluronic acid)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
change of the visual analogue scale (VAS) from the "PRP + HA" group on the "HA alone" group
Time Frame: up to one year
up to one year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Centre Hospitalier Universitaire, Amiens

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 16, 2021

Primary Completion (Estimated)

June 1, 2026

Study Completion (Estimated)

June 1, 2026

Study Registration Dates

First Submitted

August 31, 2021

First Submitted That Met QC Criteria

September 2, 2021

First Posted (Actual)

September 9, 2021

Study Record Updates

Last Update Posted (Actual)

June 15, 2026

Last Update Submitted That Met QC Criteria

June 12, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PI2021_843_0178

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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