Ankle osteoarthritis

Patient-reported outcome measure2

• FAAM Calculator29 items
  Foot and Ankle Ability MeasureThe FAAM is a 29-item patient-reported questionnaire for musculoskeletal disorders of the leg, foot and ankle that produces two separate subscale scores — Activities of Daily Living from 21 items and Sports from 8 items — each expressed from 0% (unable to perform the listed activities) to 100% (no limitation).
• FAOS Calculator42 items
  Foot and Ankle Outcome ScoreThe FAOS is a 42-item patient-reported questionnaire adapted from the KOOS that scores foot and ankle problems as five separate subscales — Symptoms, Pain, Activities of Daily Living, Sport and Recreation, and Quality of Life — each from 0 (extreme problems) to 100 (no problems).

Clinical calculator1

• AOFAS Ankle-Hindfoot Calculator9 items
  AOFAS Ankle-Hindfoot ScaleThe AOFAS Ankle-Hindfoot Scale is a 100-point clinician-administered rating combining 40 points for pain, 50 for function across seven items and 10 for alignment — and although it remains the most-reported outcome in the foot and ankle literature, the society that published it withdrew its endorsement in 2011 because it was never validated.

Thresholds that apply here

Published change thresholds across the instruments above. Check the population matches your patient before using a value — a threshold derived in a different cohort will mislead you.

See the full threshold database for every instrument on the site.

Related conditions

• Achilles tendinopathy2
• Ankle fracture7
• Ankle sprain and instability6
• Hallux valgus3