Table 5 Radiographic characteristics of 56 primary total hip arthroplasty patients that were not revised at last follow-up

Acetabular radiolucent lines

18

 Progressive

6

 Stable

12

Osteolysis

9

 Zone I

3

 Zone II

3

 Zone III

2

 Zone I + II

1

Socket migration

-

Progressive tilting of the cup

-

PAO’s

13

 Brooker class II

9

 Brooker class III

4

Polyethelyne wear > 2 mm

3

Femoral radiolucent lines

3

 Zone 7

1

 Zone 3 and 5

1

 6 out of 7 zones

1

Rounding off of the calcar

8

Cortical atrophy

2

 Zone 4

1

 Zone 7

1

Cortical hypertrophy

5

 Zone 3

1

 Zone 4

3

 Zone 5

1

Osteolysis of femoral component

7

 Zone 1

1

 Zone 4

1

 Zone 5

1

 Zone 7

1

 Zone 1 and 7

4