The Foot Function Index (FFI)


The Foot Function Index (FFI) is a self-reported measure which was developed to measure the impact of foot pathology on function in terms of pain, disability and activity restriction. It is a self-administered index consisting of 23 items divided into 3 sub-scales. Both the pain subscale and the disability subscale include 9 items and the activity limitations subscale include 5 items. For each of the 3 subscales, a higher score indicates higher impact of the foot pathology on the function.
B. Zwaard, Foot Function Index, Encycl. Qual. Life Well-Being Res. 44 (2014) 2328–2330. https://doi.org/10.1007/978-94-007-0753-5_1074.


https://pubmed.ncbi.nlm.nih.gov/?term=FFI%5BTitle%5D&sort=
The user has to score each item on a scale from 0 (no pain or difficulty) to 10 (worst pain imaginable or so difficult it required help). The final score is obtained by adding up the values of the different items and can range from 0 to 90 for both the pain and the disability subscale and from 0 to 50 for the activity limitation subscale.
This questionnaire has been designed to give your therapist information as to how your foot pain has affected your ability to manage in everyday life. Please answer every question. For each of the following questions, we would like you to score each question on a scale from 0 (no pain or difficulty) to 10 (worst pain imaginable or so difficult it required help) that best describes your foot over the past week. Please read each question and click in the corresponding box.


 
 
Pain Subscale: How severe is your foot pain:
0
1
2
3
4
5
6
7
8
9
10
1.Foot pain at its worst?
2.Foot pain in morning?
3.Pain walking barefoot?
4.Pain standing barefoot?
5.Pain walking with shoes?
6.Pain standing with shoes?
7.Pain walking with orthotics?
8.Pain standing with orthotics?
9.Foot pain at end of day?
Disability Subscale: How much difficulty did you have:
0
1
2
3
4
5
6
7
8
9
10
10.Difficulty walking in house?
11.Difficulty walking outside?
12.Difficulty walking 4 blocks?
13.Difficulty climbing stairs?
14.Difficulty descending stairs?
15.Difficulty standing tip toe?
16.Difficulty getting up from chair?
17.Difficulty climbing curbs?
18.Difficulty walking fast?
Activity Limitation Subscale: How much of the time do you:
0
1
2
3
4
5
6
7
8
9
10
19.Stay inside all day because of feet?
20.Stay in bed because of feet?
21.Limit activities because of feet?
22.Use assistive device indoors?
23.Use assistive device outdoors?