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Table 1 Clinical demographics of patients

From: Total hip arthroplasty following failure of tantalum rod implantation for osteonecrosis of the femoral head with 5- to 10-year follow-up

Variable Tantalum rod group Control group
CoC CoP CoC CoP
Patient (hip) 20 (23) 11 (16) 19 (25) 14 (15)
Gender
 Male 18 8 15 11
 Female 2 3 4 3
Age (yr), mean (range) 41.4 (36–52) 46.2 (42–64) 43.2 (37–64) 45.6 (40–68)
Body mass index (kg/m2), mean (range) 25.2 (22.3–26.4) 24.7 (20.3–29.1) 24.6 (21.5–25.6) 23.2 (20.8–25.9)
Etiology
 Idiopathic 9 4 10 5
 Corticosteroid 4 2 3 3
 Alcohol 10 6 8 4
 Trauma 0 4 4 3
Femoral Stem
 Anatomy stem 8 6 6 4
 Tapered stem 15 10 19 11
  1. CoC ceramic-on-ceramic, CoP ceramic-on-polymer