Effects of Vitamin K on Lower-extremity Function in Adults With Osteoarthritis:
Public ClinicalTrials.gov record NCT05505552. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Effects of Vitamin K on Lower-extremity Function in Adults With Osteoarthritis: A Randomized Controlled Pilot Trial
Study identification
- NCT ID
- NCT05505552
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Tufts University
- Other
- Enrollment
- 37 participants
Conditions and interventions
Conditions
Interventions
- Vitamin K Dietary Supplement
- Placebo Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 50 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 19, 2023
- Primary completion
- Apr 29, 2026
- Completion
- Dec 30, 2026
- Last update posted
- Sep 16, 2025
2023 – 2026
United States locations
- U.S. sites
- 3
- U.S. states
- 2
- U.S. cities
- 3
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Tufts University | Boston | Massachusetts | 02111 | — |
| UMass Memorial Medical Center | Worcester | Massachusetts | 01605 | — |
| University of North Carolina Chapel Hill | Chapel Hill | North Carolina | 27599 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05505552, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 16, 2025 · Synced Jul 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05505552 live on ClinicalTrials.gov.