# National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS): Observational study closed enrollment, 521292 enrolled (Rheumatoid Arthritis, Ankylosing Spondylitis)

**Score:** 65/100

| Field | Value |
|---|---|
| Sponsor | National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) |
| Sponsor type | NIH |
| Study | Frequency and Complications of Major Orthopedic Procedures in Medicare Beneficiaries |
| NCT ID | NCT02281747 |
| Phase | Observational |
| Status | active not recruiting |
| Conditions | Rheumatoid Arthritis; Ankylosing Spondylitis |
| Target enrollment | 521292 |
| Site countries | United States |
| Posted | 2014-11-04 |
| Planned start | 2014-10-24 |
| Event | Enrollment closed (active, not recruiting) |
| Event date | 2026-10-27 |
| Last update posted | 2026-10-27 |

## Why this score
- Posted in the last two weeks.
- Enrollment closed: data management, monitoring and closeout ahead.
- 521292 participants planned.

Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2 (https://clinicaltrials.gov/study/NCT02281747). Last refreshed: 2026-11-04T06:04:38.232Z.
From public ClinicalTrials.gov registrations. Sponsor and study level only: we never list investigators, contacts or participants. A registration describes a planned study and can change. Status changes are read from each study's current status, actual dates and latest posted update, not a full change history, so an update can be a correction rather than a new change. Verify on ClinicalTrials.gov.