| Name of the Instrument/Tool | Foot and Ankle Outcome Score (FAOS) |
| First Description |
Roos EM, Brandsson S, Karlsson J. Validation of the foot and ankle outcome score for ankle ligament reconstruction. Foot Ankle Int 2001;22:788–94. |
| Year | 2001 |
| Domains | |
| Concept of constructs | Foot health |
| Population/Disease | Generic |
| Originally developed for | --- |
| Other rheumatic diseases where can be applied (only if validated) |
--- |
| Additional population with no rheumatic diseases |
Yes Foot & Ankle surgery/injury |
| Language: Originally published in | English |
| Available in Language | Dutch, Arabic, German, Turkish, Portuguese, Spanish, Chinese, Estonian, Norwegian, Polish, Finnish, Persian, Swedish, Thai, Danish, Korean |
| REFERENCE IDENTIFICATION | |
| Author/s | Roos EM, Brandsson S, Karlsson J |
| Title | Validation of the foot and ankle outcome score for ankle ligament reconstruction |
| Journal | Foot Ankle Int |
| Year | 2001 |
| Vol | 22 |
| Num | 10 |
| Pages | 788-94 |
| Country | Sweden |
| Language | English |
| Other references of interest | |
| Link | https://pubmed.ncbi.nlm.nih.gov/29026933/ |
| Brief Description |
Measurement properties of the most commonly used Foot- and Ankle-Specific Questionnaires: the FFI, FAOS and FAAM. A systematic review |
| Link | https://pubmed.ncbi.nlm.nih.gov/23513031/ |
| Brief Description |
Validation of the Foot and Ankle Outcome Score in adult acquired flatfoot deformity |
| Link | https://pubmed.ncbi.nlm.nih.gov/33091250/ |
| Brief Description |
Measures of Foot Pain, Foot Function, and General Foot Health |
| Instrument/Tool Translations References | |
| Link | https://pubmed.ncbi.nlm.nih.gov/24748232/ |
| Brief Description |
Translation and validation of the German version of the foot and ankle outcome score |
| Link | https://pubmed.ncbi.nlm.nih.gov/29787992/ |
| Brief Description |
Reliability and validity analysis of the open-source Chinese Foot and Ankle Outcome Score (FAOS) |
| Link | https://pubmed.ncbi.nlm.nih.gov/20140474/ |
| Brief Description |
Reliability and validity of the foot and ankle outcome score: a validation study from Iran |
| DEVELOPER CONTACT INFORMATION | |
| Correspondence to | Ewa M Roos |
| Ewa.Roos@ort.lu.se | |
| Address | Dept of Orthopedics, Lund University, Sweden |
| Website | --- |
| Available | --- |
| Links | --- |
| DESCRIPTION OF THE INSTRUMENT | |
| Type Of Measure | Score |
| Brief Description |
The FAOS is an adaptation of the Knee Injury and Osteoarthritis Outcome Score, which was originally developed in 1998 to assess short‐ and long‐term patient‐relevant outcomes following knee injury . In 2001, Roos et al, substituted “knee” with “foot/ankle” and validated the new tool in 213 in patients undergoing surgical reconstruction of lateral ankle ligaments. The FAOS has primarily been used as a foot and ankle surgical outcome measure. The FAOS has five foot‐health–related domains: pain (9 items), other symptoms (7 items), activities of daily living (17 items), sport and recreational activities (5 items), and foot and ankle‐related quality of life (4 items). |
| Number of Items | 42 |
| Range | 0-100 |
| Responses options/scale |
Yes and extreme). |
| Developed for | --- |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered |
| Recommendations to score |
Each item is scored from 0 to 4. Raw subscale scores are calculated first by adding each item, and then each subscale is converted to a metric from 0 to 100, in which 100 denotes the most severe condition. |
| Score Interpretation | Score ranges from 0 (representing optimal foot health) to 100 (representing worst foot health). Higher scores therefore represent worse foot health |
| Cut-off points | --- |
| Cut-off points applied to | --- |
| Smallest detectable change if described | --- |
| Smallest detectable change applied to | --- |
| Completion time by the patient | 10 minutes |
| Scoring time by the assessor | <5 minutes |
| Training to score | Not necessary |
| Strengths | Easy to use, Useful in clinical practice & research |
| Limitations | --- |
| OTHER COMMENTS | |
| Other Comments |
Although the FOAS has been evaluated in a variety of patient groups and conditions, it has primarily been used in surgical studies |