PMC10196225_01
X-ray and macroscopic imaging of the patient. (A) Anteroposterior radiographs of dual knees. (B) Macroscopic image of characteristic vesicles. (C) Macroscopic image of the lesion after treatment.
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F1
On the fifth day after TKA, the x-ray showed no loosening of the prosthesis and no significant fractures around the prosthesis (Figure 1A), and the patient was then allowed home. Five days after severe and persistent pain, painful erythematous grouped vesicles were observed above the right knee (Figure 1B). Three months later, an outpatient review showed that the pain had completely disappeared, but there was still marked pigmentation, scarring, and occasional tingling above the right knee (Figure 1C).