|
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
|
- CoC ceramic-on-ceramic, CoP ceramic-on-polymer
