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Table 1 Demographics of the avascular necrosis patients undergoing primary total hip arthroplasty with CoC or CoXPE bearing with more than 5 years follow-up

From: Comparison of ceramic-on-ceramic bearing vs ceramic-on-highly cross-linked polyethylene-bearing surfaces in total hip arthroplasty for avascular necrosis of femoral head: a prospective cohort study with a mid-term follow-up

 CoXPE (n = 77)CoC (n = 93)P value
Patients6271 
THAs7793 
Age (years)59 (36–79)51 (30–75)P = 0.034
Sex (male/female)44/3353/40P = 0.984
BMI (kg/m2)23.2 (19.7–28.9)25.2 (19.9–29.3)P = 0.162
Cause of AVNF
 Steroids5772 
 Alcohol1215 
 traumatic86 
Follow-up (years)7.2 (5–9)6.9 (5–9) 
  1. CoXPE Ceramic-on-highly cross-linked polyethylene, CoC ceramic on ceramic, BMI body mass index, AVNF avascular necrosis of femoral head. All values were given as the mean and range