Every study on the ClinicalTrials.gov registry that lists a site in Canada and is open, about to open, active-but-closed, or enrolling by invitation. Filter it, cite it, and take it away as a file.
This register is built from ClinicalTrials.gov, the trial registry run by the U.S. National Library of Medicine. It includes every study on the registry that lists at least one investigative site in Canada and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 6,540 studies in total at the last sync on 26 Sep 2026, 19:55 UTC. The full list can be downloaded as CSV or queried as JSON through the register API.
This page shows the 11 of those studies listing the condition Pain, Postoperative.
7 of the 11 studies on this page are recruiting new participants as of the 26 Sep 2026, 19:55 UTC sync. A further 2 have not yet opened recruitment, 2 are active but closed to new participants, and 0 are enrolling by invitation only. Eligibility for any study is decided by its study team.
| Phase | Studies | Recruiting | Share |
|---|---|---|---|
| Not applicable | 5 | 3 | 45.5% |
| Phase 4 | 4 | 3 | 36.4% |
| Phase 2 | 1 | 1 | 9.1% |
| Phase 3 | 1 | 0 | 9.1% |
| Lead sponsor | Studies | Recruiting |
|---|---|---|
| Nova Scotia Health Authority | 2 | 0 |
| Women's College Hospital | 2 | 1 |
| Hamilton Health Sciences Corporation | 1 | 1 |
| McMaster University | 1 | 1 |
| The Hospital for Sick Children | 1 | 1 |
| University Health Network, Toronto | 1 | 0 |
| University of Calgary | 1 | 1 |
| University of Manitoba | 1 | 1 |
| University of Michigan | 1 | 1 |