Table 1.
Patient demographic data and summary of septic and aseptic failures
Demographic | Number |
---|---|
Number of patients | 239 (253 knees) |
Man-to-woman ratio | 104:135 |
Median followup (years) (range) | 4 (1–17) |
Mean age (years) | 70 ± 10 |
Mean BMI (kg/m2) | 32 ± 7 |
Number of repeat one-stage procedures | 17 (7%) |
Number of patients failing a two-stage revision | 33 (13%) |
Number of septic failures | 16 (6%) |
Number of aseptic failures | 17 (7%) |
Septic failures treated with: | |
I&D + component retention and polyethylene exchange + suppressive antibiotics | 4 |
I&D + component retention and polyethylene exchange | 4 |
Suppressive antibiotics with no surgery | 4 |
Above knee amputation | 1 |
Repeat 2SR TKA | 3 |
Number of repeat two-stage revisions | 11 (in 11 patients) |
Causes of aseptic failures: | |
Loosening | 7 |
Instability | 5 |
Pain | 2 |
Extensor mechanism failure | 1 |
Osteolysis | 1 |
Nickel allergy | 1 |
I&D = open debridement.