| Name of the Instrument/Tool | Knee Injury and Osteoarthritis Outcome Score - Physical Function Shortform (KOOS-PS) |
| First Description |
Perruccio AV, Stefan Lohmander L, Canizares M, Tennant A, Hawker GA, Conaghan PG, Roos EM, Jordan JM, Maillefert JF, Dougados M, Davis AM. The development of a short measure of physical function for knee OA KOOS-Physical Function Shortform (KOOS-PS) - an OARSI/OMERACT initiative. Osteoarthritis Cartilage. 2008 May;16(5):542-50. |
| Year | 2008 |
| Domains | |
| Concept of constructs | Physical function |
| 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 | Dutch, Korean, French, Swedish, Russian, Italian, Arabic, Turkish, Spanish, Polish, German, Danish, Portuguese, Chinese, Norwegian |
| REFERENCE IDENTIFICATION | |
| Author/s | Perruccio AV, Stefan Lohmander L, Canizares M, Tennant A, Hawker GA, Conaghan PG, Roos EM, Jordan JM, Maillefert JF, Dougados M, Davis AM |
| Title | The development of a short measure of physical function for knee OA KOOS-Physical Function Shortform (KOOS-PS) - an OARSI/OMERACT initiative. |
| Journal | Osteoarthritis Cartilage |
| Year | 2008 |
| Vol | 16 |
| Num | 5 |
| Pages | 542-50 |
| Country | Canada |
| Language | English |
| Other references of interest | |
| Link | https://pubmed.ncbi.nlm.nih.gov/19215728/ |
| Brief Description |
Comparative, validity and responsiveness of the HOOS-PS and KOOS-PS to the WOMAC physical function subscale in total joint replacement for osteoarthritis |
| Link | https://pubmed.ncbi.nlm.nih.gov/24429183/ |
| Brief Description |
Reliability and clinically important improvement thresholds for osteoarthritis pain and function scales: a multicenter study |
| Link | https://pubmed.ncbi.nlm.nih.gov/32827668/ |
| Brief Description |
Systematic review and meta-analysis of measurement properties of the Hip disability and Osteoarthritis Outcome Score - Physical Function Shortform (HOOS-PS) and the Knee Injury and Osteoarthritis Outcome Score - Physical Function Shortform (KOOS-PS). |
| Instrument/Tool Translations References | |
| Link | https://pubmed.ncbi.nlm.nih.gov/19912982/ |
| Brief Description |
Reliability, validity and responsiveness of the Portuguese version of the Knee injury and Osteoarthritis Outcome Score--Physical Function Short-form (KOOS-PS). |
| Link | https://pubmed.ncbi.nlm.nih.gov/23948834/ |
| Brief Description |
Reliability and validity of the Turkish version of the knee injury and osteoarthritis outcome score-physical function short-form (KOOS-PS) |
| Link | https://pubmed.ncbi.nlm.nih.gov/27497697/ |
| Brief Description |
Cross-cultural validation of the ICOAP and physical function short forms of the HOOS and KOOS in a multi-country study of patients with hip and knee osteoarthritis |
| DEVELOPER CONTACT INFORMATION | |
| Correspondence to | Anthony V Perruccio |
| perruci@uhnres.utoronto.ca | |
| Address | Division of Health Care and Outcomes Research, Toronto Western Research Institute, Toronto, Canada |
| Website | --- |
| Available | --- |
| Links | --- |
| DESCRIPTION OF THE INSTRUMENT | |
| Type Of Measure | Scale, Questionnaire |
| Brief Description |
The KOOS-PS is a 7-item measure of physical functional derived from the items of the Function, daily living and Function, sports and recreational activity subscales of the KOOS. As with the KOOS it is intended to elicit people’s opinions about the difficulties they experience with activity due to problems with their knee. |
| Number of Items | 7 |
| Range | 0-28 convertible to 0-100 |
| Responses options/scale |
Yes none to extreme. |
| Developed for | --- |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered, Interviewer/assessor, Online/Mail based |
| Recommendations to score |
The questionnaire is scored by summing the raw response (range 0-28) and then the raw score is converted to a true interval score (0-100). KOOS can be scored in two directions, best to worst and worst to best, from no difficulty (0) to extreme difficulty (100), as in the original KOOS-PS publication and from extreme difficulty (0) to no difficulty (100) in accordance with the KOOS respectively. |
| Score Interpretation | 0 indicates no difficulty and 100 indicates extreme difficulty. |
| 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 | --- |