ClinicalTrials.gg
RecruitingNCT07380906RAMBOUpdated Jun 12, 2026

geniculaR Artery eMBolization for Knee Osteoarthritis (RAMBO) Registry

An observational study in Knee Osteoarthristis, sponsored by Joint & Vascular Institute. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-12.

Sponsored by Joint & Vascular Institute · Observational

From the registry’s dates

  • Started Jul 2025; still recruiting 1 year 3 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,200
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this observational study (prospective registry) is to collect long-term real-world data on the effectiveness and safety of genicular artery embolization (GAE) for knee osteoarthritis in adults aged 18 years or older with symptomatic KOA that has not responded to medical therapy.

The main questions it aims to answer are:

  1. Does GAE lead to sustained improvement in pain (WOMAC, VAS) and quality-of-life scores over 12-36 months?
  2. What patient or procedural factors are associated with better outcomes after GAE?

Participants will:

  • Undergo GAE as part of their routine clinical care.
  • Complete clinical follow-up assessments at 1, 3, 6, 12, 18, 24, and 36 months after treatment, including symptom and quality-of-life questionnaires.
  • Have safety outcomes tracked according to Society of Interventional Radiology guidelines.

There is no comparison group; results will be analyzed to identify predictors of success and inform best practices for patient selection and treatment.

02

Conditions studied

  • Knee Osteoarthristis

Keywords

  • knee osteoarthritis
  • embolization
  • GAE
  • Genicular Artery Embolization
03

In context

Osteoarthritis, Knee

3,292 studies on the registry are indexed under Osteoarthritis, Knee; 623 are open to participants now.

This study's planned enrollment of 1,200 is above the median of 100 across 486 observational studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

Joint & Vascular Institute is the lead sponsor of 4 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The study population consists of adult patients (18 years and older) presenting to the Joint \& Vascular Institute for clinical consultation regarding symptomatic knee osteoarthritis. This population includes individuals who have failed standard medical management and are seeking minimally invasive alternatives to total knee arthroplasty. The registry will include men and women of all races and ethnicities without exclusion, provided they meet the clinical criteria for GAE as determined by the Principal Investigator or Sub-Investigators.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Adults (≥18 years) with symptomatic KOA to medical therapy, referred for GAE.

Exclusion criteria

Exclusion Criteria:

  • Pregnancy, coagulopathy, severe comorbidities, or inability to consent.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,200 participants (estimated)
Target follow-up
5 Years
Patient registry
Yes

Interventions

  • ProcedureGenicular Artery Embolization

    Genicular Artery Embolization (GAE) is a minimally invasive, image-guided procedure in which embolic agents are delivered into hyperemic genicular arteries to reduce synovial inflammation and knee pain from osteoarthritis.

06

What researchers measure

Primary outcomes

  1. Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)

    The investigators will describe differences in pain response with Genicular Artery Embolization (GAE) compared to a sham procedure when treating medically refractory mild to moderate Knee Osteoarthritis (KOA) at 12 months as measured by the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Pain subscale score. A higher score index a higher pain level while a lower score indicates lower pain levels. The score range is 0 to 96.

    Time frame: 5 years of enrollment/patient

07

Study locations

1 of 1 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 12, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07380906
Lead sponsor
Joint & Vascular Institute
Responsible party
Sponsor
First posted
Feb 2, 2026
Start date
Jul 16, 2025
Primary completion
Apr 2030 (estimated)
Completion
Jul 2030 (estimated)
Last update
Jun 12, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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