The foot ulcer is a biomarker of some of the most problematic complications of diabetes. It includes peripheral vascular disease and neuropathy, which is the effect of diabetes on nerves. It often is associated with poor glucose control, and emphasizes that when you identify someone at risk for a diabetic foot ulcer, you've identified those individuals with diabetes who have the highest risk of all complications.
Again, this is an area where I think evidence and the application of information at the level of point of care would be absolutely critical to address this particular issue.