A 56-year-old man with a 5-year history of type 2 diabetes mellitus was worried about developing a foot ulcer.
Which clinical feature, if present, best predicts the development of a foot ulcer in a patient with diabetes?
A . absent foot pulses
B . absent sensation to a monofilament
C . history of a previous foot ulcer
D . inability to perform own foot care
E . vibration perception threshold >25v
Answer: C