| Name of the Instrument/Tool | Activity Rating Scale (ARS) |
| First Description |
Marx RG, Stump TJ, Jones EC, et al. Development and evaluation of an activity rating scale for disorders of the knee. Am J Sports Med 2001;29:213–8 |
| Year | 2001 |
| Domains | |
| Concept of constructs | Activities of daily living |
| Population/Disease | Generic |
| Originally developed for | --- |
| Other rheumatic diseases where can be applied (only if validated) |
Osteoarthritis (OA) |
| Additional population with no rheumatic diseases |
Yes Knee disorders |
| Language: Originally published in | English |
| Available in Language | Persian, Swedish |
| REFERENCE IDENTIFICATION | |
| Author/s | Marx RG, Stump TJ, Jones EC, Wickiewicz TL, Warren RF |
| Title | Development and evaluation of an activity rating scale for disorders of the knee |
| Journal | Am J Sports Med |
| Year | 2001 |
| Vol | 29 |
| Num | 2 |
| Pages | 213-8 |
| Country | USA |
| Language | English |
| Other references of interest | |
| Link | https://pubmed.ncbi.nlm.nih.gov/30053843/ |
| Brief Description |
Construction of an adherence rating scale for exercise therapy for patients with knee osteoarthritis |
| Link | https://pubmed.ncbi.nlm.nih.gov/18587624/ |
| Brief Description |
Which is the best activity rating scale for patients undergoing total joint arthroplasty? |
| Link | https://pubmed.ncbi.nlm.nih.gov/33091264/ |
| Brief Description |
Measures of Adult Knee Function |
| Instrument/Tool Translations References | |
| Link | https://pubmed.ncbi.nlm.nih.gov/28979920/ |
| Brief Description |
Translation, Cross-Cultural Adaptation, and Validation of the Activity Rating Scale for Disorders of the Knee |
| Link | https://pubmed.ncbi.nlm.nih.gov/33281260/ |
| Brief Description |
Development of the Persian Version of Knee Outcome Survey Activities for Daily Living Scale |
| DEVELOPER CONTACT INFORMATION | |
| Correspondence to | Robert G Marx |
| DrMarxTeam@robertmarxmd.com | |
| Address | 541 E 71st St Ground Floor, New York, NY 10021, USA |
| Website | https://www.robertmarxmd.com/ |
| Available | --- |
| Links | --- |
| DESCRIPTION OF THE INSTRUMENT | |
| Type Of Measure | Questionnaire |
| Brief Description |
The ARS is a single index developed as a short, simple knee‐specific questionnaire to evaluate the activity level of patients with various knee disorders who participate in different sports. It is intended to provide data on an athlete's highest activity level within the past year. It is intended for use in various knee conditions, including ligament, meniscus, and chondral injury; patellofemoral pain; osteochondritis dissecans; trabecular fracture; and iliotibial band syndrome |
| Number of Items | 4 |
| Range | 0-16 |
| Responses options/scale |
Yes Each item is followed by five responses for the frequency of each functional component within the past year |
| Developed for | Clinical practice, Research |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered |
| Recommendations to score |
The total score is the sum of scores from responses to each of the four item. Each item is scored from 0 to 4, in which 0 = less than one time a month, 1 = one time in a month, 2 = one time in a week, 3 = two to three times in a week, and 4 = four or more times in a week. |
| Score Interpretation | Higher scores represent more frequent participation |
| Cut-off points | --- |
| Cut-off points applied to | --- |
| Smallest detectable change if described | --- |
| Smallest detectable change applied to | --- |
| Completion time by the patient | 1 minutes |
| Scoring time by the assessor | 5 minutes |
| Training to score | Not necessary |
| Strengths | Useful in clinical practice & research, Easy to use |
| Limitations | --- |
| OTHER COMMENTS | |
| Other Comments |
Previously, the ARS had only been validated for adult use. However, a study published in 2015 found the ARS to be reliable in patients younger than the age of 18 with knee injuries, with decreasing reliability in patients younger than 14. Test‐retest data confirmed its reliability in all but one of the questions in the cohort with participants aged between 14 and 18. Although the questionnaire may prove useful in this pediatric population, its usefulness may be limited by the significant ceiling effect observed; more than half of the patients had maximum scores of 16 (50.6%). |