Speckle Study: In Arterial, Mixed and Diabetic Foot Ulcers

This is a single centre open label study measuring microcirculatory flux using Speckle imaging Device. Microcirculation will be measured using laser speckle contrast imaging, at baseline and with the device active for 30 minutes in the wound, peri-wound and other point on the lower leg. The same procedure will be done on all the different patient groups. Temperature variations can be assessed using Infrared Temperature Scanner (Exergen DermaTemp DT1001), a measurement will be taken at baseline, and then at 5 minutes interval during the 30 minutes activity of the device.