Evaluation of the foot and ankle outcome score in patients with osteoarthritis of the ankle.
The foot and ankle outcome score (FAOS) has been evaluated for many conditions of the foot and ankle. We evaluated its construct validity in 136 patients with osteoarthritis of the ankle, its content validity in 37 patients and its responsiveness in 39. Data were collected prospectively from the registry of patients at our institution. All FAOS subscales were rated relevant by patients. The Pain, Activities of Daily Living, and Quality of Life subscales showed good correlation with the Physical Component score of the Short-Form-12v2. All subscales except Symptoms were responsive to change after surgery. We concluded that the FAOS is a weak instrument for evaluating osteoarthritis of the ankle. However, some of the FAOS subscales have relative strengths that allow for its limited use while we continue to seek other satisfactory outcome instruments.
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Mani
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Do
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Vulcano
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Hogan
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Lyman
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Deland
Hospital for Special Surgery, 535 East 70th Street, New York, 10021, USA.
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Ellis
D000328:Adult; D000368:Aged; D000843:Ankle Joint; D005260:Female; D005528:Foot; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery*; D011446:Prospective Studies; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D055815:Young Adult
FAOS; ankle osteoarthritis; outcome score; total ankle replacement