HighlightsFor the pyoderma gangrenosum patients who have no history of skin ulcers, surgical incision ulceration and delayed healing after surgery are likely to misdiagnosed as a simple infection due to lack of experience.It is the first case report of pyoderma gangrenosum patients underwent total hip arthroplasty. Pyoderma gangrenosum was prevented successfully after operation and a satisfactory result was obtained.
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