To the OP, just thought I would post some quotes from an article that appeared in JAMA. It was listed as one of the top 25 articles. It talks about diebetic foot ulcers and the importance of podiatric medicine. I also included the link for you if you want to read the whole thing.
"Another randomized study of diabetic persons (N = 91) with a previous foot ulceration found a significantly reduced risk for ulceration recurrence (RR, 0.52; 95% CI, 0.29-0.93; P = .03) at 1 year for those who received routine podiatric care.84 Thus, screening foot examinations are unlikely to reduce the incidence of foot complications
unless they eventuate in appropriate specialist referrals (eg, for intensive podiatric care and customized footwear; Table 4).
In another trial of diabetic persons with neuropathy, 235 were randomized to receive podiatric care at least twice a year and 263 to receive no podiatric treatment.95 During the study period ( 3 years), there was no difference in the incidence of foot ulcers,
but the podiatric care group had fewer deep ulcers (6 vs 12), infected ulcers (1 vs 10; P<.01), and hospital admission days (24 vs 346; P<.01).
Possibly effective interventions include optimizing glycemic control, smoking cessation,
intensive podiatric care, and debridement of calluses."
http://jama.ama-assn.org/cgi/content/full/293/2/217
Whether you are doing reconstructive surgery of the foot or ankle or managing diabetic wounds, there is a need for podiatric medicine and surgery. That fact that JAMA published an article saying that for the most part MDs arent equipped to handle diabetic wounds while podiatrist are, tells you that.