Fig. 1

Proposed diabetic foot investigation algorithm. *1: if no ulcer/orifice, osteomyelitis is unlikely and consider another diagnosis and scintigraphy *2: according to IDSA: swelling, redness, pain, heat or purulent discharge *3: bone exposure or bone contact with the metal probe *4: consider arterial Doppler or consultation in vascular surgery if pulse absent / decreased *5: Superficial swabs are not recommended *6: Scintigraphy could be an alternative to first-line MRI