Table 1 Comparison between populations collected from registry report and single institution

Number

66 (27 M; 39 F)

26 (14 M; 12 F)

29 hips

Mean age at surgery, years

71.1 M; 74.8 F

69

Type of fixation

 Cementless

44/66

20/29

 Cemented

9/66

1/29

 Hybrid

13/66

8/29

Coupling

 Metal-on-polyethylene

23/66

1/29

 Ceramic-on-polyethylene

18/66

3/29

 Ceramic-on-ceramic

19/66

25/29

 Metal-on-metal

2/66

–

 Oxinium-on-polyethylene

2/66

–

 Failures

8/66

2/29

 Aseptic loosening of the stem

4/66

–

 Aseptic loosening of the cup

1/66

1/29

 Recurrent prosthesis dislocation

1/66

–

 Breakage of head

1/66

1/29

 Peri-prosthetic fracture

–

–

 Unknown

1/66

–