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Taking people in TürkiyeNo phase

The Validity and Reliability of the OMERACT in the Turkish Population

Key facts

Who runs it
Izmir Democracy University
Where
Izmir, TürkiyeSee the site
Trial code
Status
Recruiting
People taking part
100 people, planned
Started
1 Feb 2026
Expected to end
1 Sept 2027
Type of study
Observational
Record updated
27 March 2026

Who can take part

Age
45 years and older
Sex
Women and men
Healthy volunteers
Cannot take part

The registry criteria, word for word

Show all 16 criteriaShow less

Who can take part

  • Adults aged 45 years and older
  • Patients diagnosed with knee osteoarthritis clinically or radiographically
  • Being in a clinical condition that allows tolerance of ultrasound evaluation of both knees
  • Being able to provide written informed consent for participation in the study
  • Having sufficient cognitive ability to understand Turkish forms and scales

Who cannot take part

  • Intra-articular injection into the knee joint within the last 6 months (corticosteroid, hyaluronic acid, PRP, etc.)
  • Previous major knee surgery (total knee replacement, major ligament reconstruction, etc.)
  • Active infection/systemic febrile condition
  • Neurological disease causing motor or sensory deficit in the lower extremities
  • Use of Gabapentinoid/SNRI/SSRI due to fibromyalgia or psychiatric illness
  • Severe cognitive impairment or communication problems that would prevent participation in the study
  • Diagnosis of inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, gout, CPPD, etc.)
  • Acute pathology that has developed within the last 6 weeks, such as acute trauma/fracture/ligament injury
  • Severe deformity or severe movement restriction that technically prevents ultrasound examination
  • Pregnancy
  • Subjects who have been informed about the study and refuse to participate

Where in Türkiye

  • Izmir Democracy UniversityIzmir, TürkiyeContact: Kadir SongürTaking people

About the trial

What the trial wants to find out

Knee osteoarthritis is a chronic disease common in middle-aged and older adults, characterized by functional impairment and reduced quality of life due to pain. While physical examination and radiographic Kellgren-Lawrence grading are frequently used in clinical evaluation, the severity of pain does not always correlate with the degree of structural degeneration. Ultrasonography is gaining prominence in osteoarthritis research due to its advantage of simultaneously evaluating both inflammatory and structural components, such as synovial hypertrophy, effusion, power Doppler signal, and osteophytes. The Outcome Measures in Rheumatology (OMERACT) working group has developed a standardized, multidimensional ultrasound scoring system for knee osteoarthritis, and this method is frequently used in the literature. This method consists of a diagnostic ultrasound examination lasting approximately 8-10 minutes. The examination evaluates the anatomical structures of the knee and also includes soft tissue examinations such as synovial hypertrophy. With this method, a diagnostic ultrasound examination lasting approximately 8-10 minutes is performed. The examination evaluates the anatomical structures of the knee and also includes soft tissue examinations such as synovial hypertrophy. Considering the differences between societies in cultural, genetic, biomechanical, body mass index distribution, and healthcare system practices, direct validity, clinical interpretability, and inter-study comparability are of significant importance. The validity, reliability, and applicability of the OMERACT osteoarthritis ultrasound scoring system have been reported in a study conducted on the Egyptian population. However, there is no data on the validity and reliability of OMERACT ultrasound scoring in the Turkish population. This study is the first prospective validation study aimed at establishing standardization for use in clinical practice in Turkey.

The group in the trial

  • knee osteoarthritis

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

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Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
The Validity, Reliability, and Clinical Correlation Study of the OMERACT Knee Osteoarthritis Ultrasound Scoring System in the Turkish Population
Record updated
27 March 2026