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Review Question - QID 6052

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QID 6052 (Type "6052" in App Search)
A 68-year-old man with no significant medical history underwent a total knee arthroplasty 4 years ago. A radiograph is shown in Figure 55. He reports that he had no problems with the knee until 6 weeks ago when he noted the gradual onset of pain following a colonoscopy. Examination reveals a painful, swollen knee. Knee aspiration reveals a WBC count of 40,000/mm3. Management should consist of
  • A

suppressive antibiotics.

1%

12/997

open irrigation and debridement with polyethylene exchange.

4%

35/997

one-stage resection arthroplasty and reimplantation.

2%

24/997

two-stage resection arthroplasty and reimplantation.

91%

911/997

arthroscopic irrigation and debridement.

0%

3/997

  • A

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The treatment of choice for a late hematogenous infection is two-stage resection arthroplasty and reimplantation, with parenteral antibiotics prior to reimplantation. This is particularly true when septic loosening has occurred as in this patient. Open irrigation and debridement with polyethylene exchange has been used successfully when the duration of symptoms is 3 weeks or less. Long-term suppressive antibiotics are most commonly used when the patient’s medical condition precludes further surgery. Delayed reimplantation has been shown to be superior to immediate reimplantation in multiple studies. Little data support the use of arthroscopic irrigation and debridement.

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