NCT06430918

Brief Summary

The primary aim is to investigate the frequency and severity of neuropathic pain and its association with night pain in patients with knee osteoarthritis. For this purpose a progressive longitudinal study design was planned. The secondary aim is to investigate the relationship between night pain and neuropathic pain and sleep quality.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
150

participants targeted

Target at P50-P75 for all trials

Timeline
15mo left

Started May 2024

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
enrolling by invitation

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress62%
May 2024Jul 2027

Study Start

First participant enrolled

May 16, 2024

Completed
1 day until next milestone

First Submitted

Initial submission to the registry

May 17, 2024

Completed
11 days until next milestone

First Posted

Study publicly available on registry

May 28, 2024

Completed
2.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 30, 2027

Last Updated

November 14, 2025

Status Verified

November 1, 2025

Enrollment Period

2.5 years

First QC Date

May 17, 2024

Last Update Submit

November 13, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Neuropathic pain; 4 Questions Neuropathic Pain Questionnaire

    The DN4 questionnaire (4 Questions Neuropathic Pain Questionnaire) will be used. It is a clinician-administered questionnaire. It consists of ten items. Seven items related to pain quality (i.e. sensory and pain descriptors) are based on an interview with the patient. Three items are based on the clinical examination. The clinician assesses whether there is reduced sensation (hyposthesia) to touch or pinprick and whether light brushing increases or causes pain (allodynia). All of the positive items are scored as one point and total score is sum of the scores of these positive items. The diagnosis is based on 4/10 cut-off value.

    through study completion, an average of 1 year

Secondary Outcomes (5)

  • Sleep quality

    through study completion, an average of 1 year

  • Depression and Anxiety; The Hospital Anxiety and Depression Scale (HADS)

    through study completion, an average of 1 year

  • Quality of life level; KOOS (KNEE INJURY AND OSTEOARTHRITIS OUTCOME SCORE) "Quality of Life" subgroup

    through study completion, an average of 1 year

  • Disability; KOOS (KNEE INJURY AND OSTEOARTHRITIS OUTCOME SCORE) "Activities of Daily Life and Function" subgroup

    through study completion, an average of 1 year

  • Night pain (VAS, 0-10 cm) Participants will be asked to report the pain intensity that they feel on a line between 0 and 10, higher scores indicating more intense pain.

    through study completion, an average of 1 year

Study Arms (1)

Patients with knee osteoarthritis

Knee OA patients diagnosed according to the ACR Classification Criteria

Other: physical examination, questionnaires and inventories

Interventions

Questionnaires and inventories related to primary end secondary outcomes will be applied and physical examination will be performed.

Also known as: Questionnaires and inventories related to primary end secondary outcomes will be applied and physical examination will be performed.
Patients with knee osteoarthritis

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients with stage 2-4 knee OA will be evaluated in terms of demographic variables and outcome measurement parameters specified in the case report form.

You may qualify if:

  • \. Having a clinical diagnosis of knee osteoarthritis according to the American Rheumatology Association/ACR criteria 2. Knee OA is of Kellgren-Lawrence stage 2-4 3. The participant gives signed consent

You may not qualify if:

  • \. Having diabetes mellitus 2. Chronic kidney failure 3. Hypothyroidism 4. Presence of orthopedic disability (such as implant, prosthesis, contracture, shortness) in the lower extremity 4. Neurological diseases that can cause neuropathic pain 5. Presence of fibromyalgia 6. Malignancy 7. Pregnancy 8. Neurological deficit in the lower extremity 9. Drug use that may cause neuropathy (colchicine, etc.) İn the last 3 months 10. Drug use (antidepressant, antipsychotic, antiepileptic) due to sleep disturbance or widespread pain in the last 3 months.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Izmir Bozyaka Training and Reseach Hospital

Izmir, 35300, Turkey (Türkiye)

Location

Related Publications (2)

  • Hoper J, Schraml L, Gierthmuhlen J, Helfert SM, Rehm S, Hartig S, Schroder O, Lankes M, Traulsen FC, Seekamp A, Baron R. Changes of Somatosensory Phenotype in the Course of Disease in Osteoarthritis Patients. Int J Environ Res Public Health. 2020 Apr 29;17(9):3085. doi: 10.3390/ijerph17093085.

  • Wylde V, Palmer S, Learmonth ID, Dieppe P. Somatosensory abnormalities in knee OA. Rheumatology (Oxford). 2012 Mar;51(3):535-43. doi: 10.1093/rheumatology/ker343. Epub 2011 Nov 24.

MeSH Terms

Conditions

Osteoarthritis, KneeParasomniasNeuralgia

Interventions

Restraint, PhysicalSurveys and QuestionnairesEquipment and Supplies

Condition Hierarchy (Ancestors)

OsteoarthritisArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic DiseasesSleep Wake DisordersNervous System DiseasesMental DisordersPeripheral Nervous System DiseasesNeuromuscular DiseasesPainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Behavior ControlTherapeuticsImmobilizationInvestigative TechniquesData CollectionEpidemiologic MethodsHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public Health

Study Officials

  • Taciser Kaya, Prof.

    Izmir Bozyaka Training and Research Hospital İzmir, Turkey

    PRINCIPAL INVESTIGATOR
  • Berna Kirilmaz Colak, MD

    Izmir Bozyaka Training and Research Hospital İzmir, Turkey

    PRINCIPAL INVESTIGATOR
  • Bugra Ince, Assoc. prof.

    Izmir Bozyaka Training and Research Hospital İzmir, Turkey

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
CROSS SECTIONAL
Target Duration
1 Day
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
MD, Professor

Study Record Dates

First Submitted

May 17, 2024

First Posted

May 28, 2024

Study Start

May 16, 2024

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

July 30, 2027

Last Updated

November 14, 2025

Record last verified: 2025-11

Locations