Arthroplasty Complications
A 68-year-old man presents 4 weeks after primary total knee arthroplasty with increasing knee pain, warmth, and wound drainage. Laboratory studies show CRP 85 mg/L and ESR 65 mm/hr. Knee aspirate reveals 45,000 WBC with 92% polymorphonuclear cells. Culture grows methicillin-sensitive Staphylococcus aureus. The implant is well-fixed on radiographs with no loosening. Regarding periprosthetic joint infection:
Mark each as TRUE or FALSE
The MSIS (Musculoskeletal Infection Society) criteria for PJI diagnosis include major criteria (two ...
PJI is classified by timing: acute early (less than 4 weeks post-operative), acute hematogenous (acu...
All periprosthetic infections require two-stage revision; DAIR is never appropriate; biofilm does no...
DAIR (debridement, antibiotics, and implant retention) is indicated for acute infections (less than ...
Two-stage revision (implant removal, antibiotic spacer, 6-12 weeks IV antibiotics, reimplantation) i...
Answer the questions to see explanations
Click T (True) or F (False) for each option