| Name of the Instrument/Tool | The Central Aspects of Pain in the Knee (CAP-Knee) |
| First Description |
Akin-Akinyosoye K, James RJE, McWilliams DF, et al. The Central Aspects of Pain in the Knee (CAP-Knee) questionnaire; a mixed-methods study of a self-report instrument for assessing central mechanisms in people with knee pain. Osteoarthritis Cartilage. 2021 Jun;29(6):802-814 |
| Year | 2021 |
| Domains | |
| Concept of constructs | Pain |
| Population/Disease | Disease specific |
| Originally developed for | Osteoarthritis (OA) |
| Other rheumatic diseases where can be applied (only if validated) |
--- |
| Additional population with no rheumatic diseases |
No |
| Language: Originally published in | English |
| Available in Language | --- |
| REFERENCE IDENTIFICATION | |
| Author/s | Akin-Akinyosoye K, James RJE, McWilliams DF, Millar B, das Nair R, Ferguson E, Walsh DA. |
| Title | The Central Aspects of Pain in the Knee (CAP-Knee) questionnaire; a mixed-methods study of a self-report instrument for assessing central mechanisms in people with knee pain |
| Journal | Osteoarthritis Cartilage |
| Year | 2021 |
| Vol | 29 |
| Num | 6 |
| Pages | 802-814 |
| Country | UK |
| Language | English |
| Other references of interest | |
| No other References. | |
| Instrument/Tool Translations References | |
| No other References. | |
| DEVELOPER CONTACT INFORMATION | |
| Correspondence to | Kehinde Akin-Akinyosoye |
| kehinde.akin@nottingham.ac.uk | |
| Address | Pain Centre Versus Arthritis, University of Nottingham, UK; Division of Rheumatology, Orthopaedics and Dermatology, School of Medicine, University of Nottingham, UK; NIHR Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust, UK |
| Website | --- |
| Available | --- |
| Links | --- |
| DESCRIPTION OF THE INSTRUMENT | |
| Type Of Measure | Questionnaire |
| Brief Description |
Simple questionnaire comprising self-report items measuring each of the eight characteristics which contribute to the Central Mechanisms trait in people with knee pain (Neuropathic-like pain, Fatigue, Cognitive-impact, Catastrophising, Anxiety, Sleep disturbance, Depression, and Pain distribution). It predicts quantitative sensory testing (QST) evidence of central sensitisation, and predicts future pain severity in people with chronic knee pain. |
| Number of Items | 8 |
| Range | 0-16 |
| Responses options/scale |
Yes or ‘always' |
| Developed for | --- |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered, Interviewer/assessor |
| Recommendations to score |
Knee items one to seven were scored 0 to 3 according to responses ‘never’, ‘sometimes’, ‘often’, or ‘always’. Item eight was allocated a binary score of ‘0' or ‘3’ based on pain reported at one knee, plus any other additional region below the waist, by shading on the pain distribution manikin. |
| Score Interpretation | Higher scores indicate higher pain |
| Cut-off points | --- |
| Cut-off points applied to | --- |
| Smallest detectable change if described | --- |
| Smallest detectable change applied to | --- |
| Completion time by the patient | - minutes |
| Scoring time by the assessor | - minutes |
| Training to score | Not necessary |
| Strengths | Useful in clinical practice & research, Easy to use |
| Limitations | --- |
| OTHER COMMENTS | |
| Other Comments |
Of the respondents, one (0.4%) had the minimum CAP-Knee score of 0, and two (0.8%) had the maximum score of 16. Pairs of complete questionnaires were obtained from each of 76 of 105 participants who completed the CAP-Knee. |