Ulcer with local signs of infection

Local signs that an ulcer has become infected include any or all of the following:

• Base of the ulcer changes from healthy pink granulations to yellowish or grey tissue

• Increased friability of granulation tissue (Fig. 5.4)

• Exudate changes from clear to purulent

Fig. 5.6 A deep sinus has appeared in the base of this ulcer.

• Unpleasant smell

• Edges may become undermined so that a probe can be passed under the skin

• Bone or tendon becomes exposed in the base of the ulcer or can be reached if a probe is passed along a sinus.

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