Table 2 FFI uses across studies in foot and ankle disorders including diagnoses

Rheumatoid arthritis

6

5

7

3

21

Osteoarthritis

2

1

1

4

Juvenile arthritis

1

1

Hallux valgus

2

2

1

5

Hallux rigidus

3

3

Plantar fasciitis/heel pain

2

2

4

3

11

Metatarso phalangeal arthritis

2

2

4

Chronic foot pain

3

2

1

6

Foot and ankle fracture

1

5

1**

1

8

Posterior tibial tendon pain

1

1

2

Bone graft

1

1

Ankle deformity

2

2

Flat foot

1

1

Cavovarus Charcot-Marie-Tooth

2

2

Osteo-chondral lesion of talus-tibia

1

1

Failed total ankle arthrodesis

1

1

Club foot

1

1

Diabetic neuropathy

1

1

Mid foot pain

1

2

3

Paget disease

1

1

Total

17

31*

19

8

4

79*