Table 2.
Type of surgery, previous antibiotic treatment, component identification and material type, MSIS status, clinical culture status, and candle dip status for 15 observed patients. Component materials are identified with the following abbreviations: M (metallic), CE (ceramic), PE (polyethylene), and polymethylmethacrylate (PMMA).
| Case Number | Surgery | Previous Antibiotic Treatment | Components | MSIS Status | Clinical Culture Status | Candle Dip Status |
|---|---|---|---|---|---|---|
| 1 | DAIR with poly exchange and removal of old fixation hardware | None | 1 two-hole screw plate (M), 2 knee component screws (M), 1 poly component (PE) | Positive | Positive (MSSA) | Positive (S. aureus) |
| 2 | DAIR with poly exchange | None | 1 poly component (PE), 1 knee component screws (M) | Positive | Positive (MRSE) | Negative |
| 3 | Removal of infected total knee and placement of rod spacer | Vancomycin ×10 days | 1 poly component (PE) | Positive | Positive (MSSA) | Positive (S. aureus) |
| 4 | Removal of infected total knee and placement of antibiotic spacer | Ciprofloxacin × 2 months | 1 tibial component (M), 1 femoral component (M) | Negative | Negative | Negative |
| 5 | Removal of infected total knee and placement of antibiotic spacer | Vancomycin × 10 days | 1 tibial component (M) | Positive | Positive (MRSE) | Negative |
| 6 | Removal of antibiotic spacer, placement of new antibiotic spacer | Spacer eluting antibiotic × 3 months | 3 pieces of a tibial component (PMMA), 1 tibial component stem (PMMA), 1 femoral component stem (PMMA) | Positive | Positive (MSSA) | Negative |
| 7 | Removal of femoral nail | None | 2 screws (M) | Negative | Negative | Negative |
| 8 | Removal of total knee and placement of antibiotic spacer | Vancomycin × 10 days | 1 femoral component (M), 1 rotating poly component (PE), 1 knee femoral component stem (M), 1 knee tibial component (M), 4 pieces of braided permanent suture material | Positive | Positive (GBS) | Negative |
| 9 | Removal of hardware associated with prior arthroplasty | None | 2 cables and clips (M) | Negative | Negative | Negative |
| 10 | Aseptic poly exchange | None | 1 tibial component (PE) | Negative | Negative | Negative |
| 11 | DAIR with poly exchange | None | 1 tibial component (PE) | Positive | Positive (MSSA) | Positive (S. aureus) |
| 12 | Removal of infected total hip and absorbable antibiotic beads placement | Vancomycin × 10 days | 1 femoral component (CE), 1 hook, 1 acetabular cup (M), 2 femoral component screws (M), 2 pieces of braided permanent suture material | Positive | Positive (MRSA) | Positive (S. aureus) |
| 13 | DAIR with femoral head exchange | Ertapenem × 2 days | 1 femoral component (M), 3 pieces of braided permanent suture material | Positive | Positive (MSSA) | Positive (S. aureus) |
| 14 | Removal of infected hip arthroplasty | Ertapenem × 5 days | 1 femoral head component (CE) | Positive | Positive (MSSA) | Positive (S. aureus) |
| 15 | Removal of infected hip arthroplasty | Bactrim × 9 months | 1 femoral component (M) | Negative | Negative | Negative |