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Table 1 Demographic and Clinical data (12 Patients, 15 Knees)

From: Debridement, antibiotics, and implant retention combined with direct intra-articular antibiotic infusion in patients with acute hematogenous periprosthetic joint infection of the knee

Age (years) 65.9 (48–82)
Gender
 Male 3 (25%)
 Female 9 (75%)
BMI (kg./m2) 27.7 (22.9–42.0)
ASA Classification
 I 3 (25%)
 II 8 (67%)
 III 1 (8%)
Comorbidities
 Diabetes 6 (50%)
 Hypertension 10 (83%)
 Chronic renal failure 1 (8%)
 Rheumatoid arthritis 1 (8%)
 Coronary artery disease 1 (8%)
Duration of symptom (hours) 107.2 (24–240)
Preoperative laboratory data
 Serum ESR (mm/hour) 92.7 (60–155)
 Serum CRP (mg/L) 173.4 (14–381)
 Synovial WBC (Cell/mm3) 52,736 (3400 - 140,000)
 Synovial PMN (%) 96.1 (82–100)
Culture
 No growth 10 (66.7%)
 Group A streptococcus 2 (13.3%)
 Group B streptococcus 1 (6.7%)
Staphylococcus aureus (MRSA) 2 (13.3%)
Duration of Intraarticular injection (days) 17.5 (7–24)
Time to normal serum CRP (days) 71.4 (23–312)
Length of stay (days) 36.7 (4–66)
Follow up time (months) 93.3 (56–133)
  1. ASA American Society of Anaesthesiologists, BMI body mass index, MRSA methicillin-resistant Staphylococcus aureus, CRP C-reactive protein, ESR erythrocyte sedimentation rate, WBC white blood cell, PMN polymorphonuclear neutrophils