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. 2012 Apr 27;470(10):2730–2736. doi: 10.1007/s11999-012-2358-8

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.