Adrian Mo's, PGY3, excellent SGR on Muscle & Joint Disorders.
The following is an excerpt from Ben Cooper's latest post on EMDocs.net.
A 55 year old male with diabetes status post a left transmetatarsal foot amputation presents to the ED with a 3 week history of a progressive foot ulcer. He denies any systemic symptoms, and has lost feeling to his lower extremities. He denies purulent drainage from the wound. His vitals are all within normal limits, and physical exam reveals a 3 cm diameter ulcer overlying the prior amputation site. A plain film is obtained and shown below.