Understanding Pain Perception in Osteoarthritis

Study Overview
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Brief Summary
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Osteoarthritis (OA)is a painful and disabling disease, predicted to be the fourth largest cause of disability worldwide by 2020. It commonly affects the hip or knee ultimately resulting in total joint replacement. In order to assess disease progression and plan surgery, x-rays are taken as part of routine practice. However x-rays provide limited information about formation of substructures and changes occurring during progression of disease. The proposed study aims to invite patients with OA of the hip or knee to participate in detailed examinations of their pain and their painful joint through interviews, blood and urine samples taken, MRI magnetic resonance imaging)and donating their waste tissue after joint surgery (all of old joint). Informed patient consent will be sought in all cases.

Detailed Description
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The patient will be asked for permission for a clinician to access their notes for information relevant to the research, including full medical history, their sex and date of birth. Tissue obtained from joint replacement surgery at St. George's Hospital and transferred to St.George's, University of London where it will be prepared for various experiments including looking at the genes and proteins in people with osteoarthritis. The blood and urine samples will also be taken to St. George's, University of London, and prepared for studies on the genes and proteins in people with osteoarthritis. All samples provided will be anonymised with no patient details on the samples and stored in locked freezers, in locked labs. at St.George's, University of London.

Official Title
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Understanding Pain Perception in Osteoarthritis: a Mechanistic Study in People With Knee Osteoarthritis

Conditions
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Osteoarthritis, Pain

Intervention / Treatment
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* Procedure: Joint replacement surgery


Participation Criteria
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Eligibility Criteria
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Inclusion criteria: Inclusion Criteria for OA patients: Study participant will be recruited from rheumatology outpatient clinics and primary care: fulfilling the American College of Rheumatology (ACR) criteria for the diagnosis of knee osteoarthritis male or female, symptomatic knee pain on usual care for knee osteoarthritis including paracetamol and/or non-steroidal anti-inflammatory drugs participants between 35 and 90 who will be undergoing knee replacement surgery or arthroscopy for osteoarthritis or knee surgery for fractured tibia/femur/fibula with osteoarthritis Inclusion criteria for Early OA Patients Study participant will be recruited from rheumatology outpatient clinics and primary care: fulfilling the American College of Rheumatology (ACR) criteria for the diagnosis of knee osteoarthritis male or female, symptomatic knee pain on usual care for knee osteoarthritis including paracetamol and/or non-steroidal anti-inflammatory drugs Participants between 35 and 90 who have osteoarthritis but will not be undergoing knee surgery Inclusion criteria for Healthy control subjects 1. Participants aged between 35 and 90 who do not have knee pain or osteoarthritis as a comparator group

Ages Eligible for Study
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Minimum Age: 35 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Participants with Advanced Knee OA<br>People with advanced knee osteoarthritis requiring joint replacement surgery are being assessed for their pain responses before and after joint replacement surgery | Procedure: Joint replacement surgery<br>* We are assessing pain responses in participants with osteoarthritis before an after joint replacement surgery<br>|
| Participants with Early Knee OA<br>Participants with osteoarthritis with early disease who do not require joint replacement surgery are being assessed for pain | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pain outcomes measured by Western Ontario and McMaster Universities Index (WOMAC) | Western Ontario and McMaster Universities Index (WOMAC) | 1 Year after joint replacement | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Magnetic Resonance Imaging Knee Osteoarthritis Score | Level of tissue damage quantified by MOAKS scoring at baseline before joint surgery | Pre-operatively | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Pain, Magnetic resonance imaging