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Table 3 Comparison of different groups Conversion to THA (%)

From: Porous tantalum implant for treatment of early-stage osteonecrosis of the femoral head: a minimum 5-year follow-up study

Classification

 

Conversion to THA

X2

P value

ARCO stage

I

5/22

8.421

0.004*

 

II

19/30

  

Bone marrow edema

Yes

19/30

8.421

0.004*

 

No

5/22

  

Age

 > 40

20/33

7.590

0.006*

 

 ≤ 40

4/19

  

Etiology

Corticosteroids

11/21

1.794

0.408

 

Alcoholism

11/23

  
 

Idiopathic

2/8

  
  1. *Denotes significant difference between groups (P < 0.05)
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BMC Surgery

ISSN: 1471-2482

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