Which countries run stem-cell trials for Hip Osteoarthritis?
5 countries host at least one registered site; United States alone accounts for around 45% of mentions in this snapshot (2026-08-29).
Country distribution
| Country | Studies with a site there |
|---|---|
| United States | 5 |
| Canada | 2 |
| Poland | 2 |
| Iran | 1 |
| Belgium | 1 |
A study with sites in several countries is counted once per country, taken from the location block of each registry record.
What the map means for Hip Osteoarthritis
The registered map is small and academic. The commercial market, by contrast, sells hip injections widely — often with image guidance that is genuinely necessary here, since blind injection of the hip is unreliable.
Where recruitment is actually open
| Country | Open studies with a site there |
|---|---|
| United States | 1 |
| Canada | 1 |
| Belgium | 1 |
What travelling for a trial actually involves
Cross-border participation fails on logistics more often than on eligibility: follow-up schedules, local insurance, visa duration and who pays for complications. A site that cannot answer those in writing is not going to enrol you.
Multi-country studies, named
Registered studies with sites in more than one country — the clearest evidence of collaboration rather than a single-centre series.
No sampled study for this condition lists sites in more than one country, so the research base here is made of single-centre work rather than multinational collaboration.
Why trial geography is not a shortlist
Registration geography is a proxy for research infrastructure, not for outcomes. The relevant question about any destination is what oversight applies to the specific product you would receive there, which is a different enquiry entirely.
Before treating geography as a shortlist, read the legality overview by country and what "best country" actually means here.
When these studies started
Registrations by start year since 2020: 2021 (1), 2022 (2), 2023 (1). Activity for this condition spans 2010 to 2023, which shows whether interest is growing, flat or past its peak.
Frequently asked
Which countries run stem-cell trials for Hip Osteoarthritis?
Sites are registered in 5 countries; the largest is United States (~45% of country mentions, 2026-08-29).
Does a country with many trials mean better treatment there?
No — trial counts describe where research is permitted and paid for. Care quality is decided at the level of the individual provider and product.
Are trial sites and commercial clinics the same thing?
They are generally distinct. Proximity in a city or even a shared address does not make a commercial clinic part of a registered protocol — ask for the identifier.
Registry and literature counts retrieved 2026-08-29 (ClinicalTrials.gov API v2; PubMed E-utilities). Registration or publication volume measures research activity, not effectiveness or approval. Educational information — not medical advice; verify product, indication, legal pathway and evidence with an independent qualified physician. Page generated 2026-08-29. See our editorial standards.