Helping to develop a new questionnaire about the knee pain experience
Research type
Research Study
Full title
The Central Aspects of Pain in the Knee (CAP-Knee) scale: Question evaluation and reliability study.
IRAS ID
234856
Contact name
David A Walsh
Contact email
Duration of Study in the UK
0 years, 4 months, 28 days
Research summary
Knee pain is the most reported symptom associated with osteoarthritis of the knee.
In individuals with knee osteoarthritis, processes occurring within the affected knee (peripheral mechanisms), and several other factors not located within the affected knee (central mechanisms) have also been shown to influence the knee pain experience.
Pain relief is reported in only 60-80% of people with osteoarthritis when treatment is targeted towards the knee alone. This implies the role of other factors outside the knee (central mechanisms) in influencing the knee pain experience.
We are developing a questionnaire, the Central Aspect of Pain in the Knee (CAP-Knee) Scale that may help identify individuals with knee pain that may be being worsened by central mechanisms. We aim to investigate the properties of this questionnaire using two approaches:Interviews will be used to assess how individuals with knee pain understand and interpret the questions included within the newly developed scale. Participant involvement in this interview phase is expected to last for 60 minutes.
For important clinical decisions to be made using the scores from the CAP-Knee scale, it is important that we establish how consistent and reliable the CAP-Knee scale scores can be in individuals with knee pain. For each participant, the time required to read the information, complete and return the questionnaire, two weeks apart is expected to take 10 minutes on each occasion.
Both the interview and reliability phases will be held within a single-research centre. Individuals aged 40 years or over, reporting knee pain for most days of the past week, are eligible to participate. Both the interview and reliability phases are expected to be completed within 5 months of beginning.
REC name
East Midlands - Nottingham 2 Research Ethics Committee
REC reference
17/EM/0480
Date of REC Opinion
2 Jan 2018
REC opinion
Favourable Opinion