Revision arthroplasty may be indicated if the patient's original knee replacement wears out or loosens, or fails as a result of repeated dislocation, infection, or trauma. Total joint revision can be a very demanding and complicated procedure. Attention to detail, anticipation, and preparation are essential. Following the induction of anesthesia, the surgeon performs an exam under anesthesia (EUA) to determine the approach. The most difficult aspect of revision surgery is that there is:
A)considerable scar tissue and edema.
B)a significant challenge ahead with postoperative pain management.
C)no clear-cut sequence of events.
D)polymethyl methacrylate (PMMA) bone cement that must be drilled out.