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Table 2 Survival rate in different groups

From: Porous tantalum rod implantation is associated with low survival rates in patients with type C2 osteonecrosis of the femoral head but has no effect on the clinical outcome of conversion total hip arthroplasty: a retrospective study with an average 8-year follow-up

Parameters Fails / Survives Survival rate % P value
ARCO stages (n. of hips)
At 24 months    P = 1.00
 II 2/25 92.6%  
 III 1/12 92.3%  
At 60 months    P = 0.45
 II 4/23 88.9%  
 III 4/9 69.2%  
At 96 months    P = 0.04
 II 4/23 81.5%  
 III 6/7 53.8%  
JIC types (n. of hips)    
At 24 months    P = 1.00
 C1 2/28 81.5%  
 C2 0/10 100%  
At 60 months    P = 0.34
 C1 4/26 86.7%  
 C2 3/7 70.0%  
At 96 months    P = 0.03
 C1 5/25 83.3%  
 C2 5/5 50.0%