Table 1 Questions included in the Charcot Radiological Staging Scale

Question 1

Is there evidence of disruption at any of the mid foot articulation?

(Do not take fusion into consideration and default answer to the highest level of disruption)

0 - No

1 - Subluxation of articulations is evident

2 - Dislocation of articulations is evident (Fig. 1a)

Question 2

Are there any bone fragments visible in the midfoot?

0 - No

1 - Yes 1–3 fragments visible

2 - Yes > 3 fragments visible (Fig. 1b)

Question 3

Is there significant or overt osteopenia (loss of bone density) through the mid foot?

0 - No

1 – Yes (Fig. 1c)

Question 4

Is there a noticeable change in shape of any mid tarsal bones not affected by fracture or fusion?

0 - No

1 – Yes (Fig. 1d)

Question 5

Is there loss of the plantar arch (medial longitudinal arch)?

0- No the plantar arch is intact

1- Yes there is some lowering of the plantar arch

2- Yes the plantar arch has been lost

3- The plantar arch is convex (rocker bottom) (Fig. 1e)