Table 1 Mean muscle CSA, correlational coefficient values and Bland-Altman limits of agreement for US and MRI

Right foot

 FHB

1.41 ± 0.36

1.40 ± 0.36

0.988

(0.976 - 0.994)

0.976

-0.15

0.17

11.3

 ABDH

2.48 ± 0.57

2.53 ± 0.51

0.982

(0.965 - 0.991)

0.971

-0.35

0.21

11.3

 FDB

2.29 ± 0.53

2.36 ± 0.52

0.981

(0.963 - 0.990)

0.989

-0.20

0.10

6.6

 QP

1.92 ± 0.58

1.90 ± 0.59

0.992

(0.984 - 0.996)

0.985

-0.18

0.23

10.6

 ADM

1.28 ± 0.37

1.27 ± 0.37

0.985

(0.971 - 0.993)

0.985

-0.12

0.14

10.1

Left foot

 FHB

1.36 ± 0.34

1.37 ± 0.35

0.993

(0.986 - 0.996)

0.986

-0.14

0.09

8.5

 ABDH

2.46 ± 0.6

2.51 ± 0.63

0.987

(0.974 - 0.993)

0.976

-0.32

0.23

11.2

 FDB

2.27 ± 0.56

2.32 ± 0.54

0.960

(0.922 - 0.980)

0.992

-0.18

0.08

5.7

 QP

1.92 ± 0.58

1.91 ± 0.64

0.990

(0.981 - 0.995)

0.985

-0.23

0.24

12.2

 ADM

1.29 ± 0.34

1.28 ± 0.33

0.983

(0.967 - 0.992)

0.995

-0.14

0.15

11.2