Mobile Technology to Measure Knee Health in Osteoarthritis

This study is looking at a new way to measure knee health in people with osteoarthritis (OA) using smartphone technology called OpenCap. Researchers want to see if OpenCap can accurately measure how your knee moves during daily activities, similar to more complex lab equipment. They will compare these measurements to your reported symptoms and the structure of your knee joint. The goal is to find better ways to diagnose knee OA earlier, especially in Veterans who experience this condition frequently. You may be able to join if you are a Veteran or non-Veteran, male or female, diagnosed with early knee OA, and have already participated in the "Precision Assessment of Platelet Rich Plasma for Joint Preservation" study (NCT03460236). The study is currently observational, meaning it observes participants without giving new treatments. Success will be determined by how well OpenCap's measurements match traditional methods and patient reports.

Study design
This is an observational study with a planned enrollment of 47 participants. It is not specified if it is randomized or blinded.
What's involved
Your knee flexion angle will be measured at the beginning of the study (Baseline) and again at Week 1.
Compensation
Not stated in the trial record.
Follow-up
Your knee flexion angle will be measured at Baseline and Week 1.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07580222

Mobile Technology to Measure Knee Health in Osteoarthritis

Recruiting
Not specifiedAges 30+Observational
VA Office of Research and Development
~47 participants
Updated 2026-05-12 on ClinicalTrials.gov

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Knee flexion angle
Measured over Baseline and Week 1
Osteoarthritis, Knee
1 sites across 1 states
California1
  • Jade He, PhD · PRINCIPAL_INVESTIGATOR · VA Palo Alto Health Care System, Palo Alto, CA

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Do you actually qualify for this trial?

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Eligibility criteria

Inclusion

Veteran and non-Veterans
males and females
diagnosed with early knee osteoarthritis
qualified for and participated in the Precision Assessment of Platelet Rich Plasma for Joint Preservation study (ClinicalTrials.gov ID: NCT03460236)
able and willing to provide informed consent for follow-up study

Exclusion

symptomatic OA in joints other than the knee in the lower body
joint replacement
rheumatic disease
BMI \> 35 kg/m\^2
severe systematic disease defined as American Society of Anesthesiologists (ASA) 3 or above
pregnant or intending to become pregnant during the study
  • Knee flexion angleBaseline and Week 1

    Knee flexion angle extracted from functional activities (e.g., walking, chair-to-stand)