Table 2.
Patient demographics and implant data at surgery
| Variable | PE | XLPE |
|---|---|---|
| Number of hips | 27 | 25 |
| Age (years)* | 56 (41–70) | 55 (42–68) |
| Male/female | 15/12 | 12/13 |
| Primary/secondary arthrosis | 22/5 | 19/6 |
| Weight (kg)* | 83 (58–120) | 82 (47–116) |
| Cup size (mm)† | 54 (48–60) | 54 (48–60) |
| Stem Size 1/2/3 | 5/15/7 | 1/14/10 |
| Standard/high-offset | 17/10 | 19/6 |
| Charnley Group A/B/C | 16/7/4 | 16/2/7 |
| Preoperative Harris hip score (points)† | 46 (18–68) | 44 (18–78) |
| Preoperative Harris pain score (points)† | 10 (0–30) | 10 (0–30) |
For all variables, p > 0.1 (Mann-Whitney U test); *values are expressed as mean, with range in parentheses; †values are expressed as median, with range in parentheses; PE = polyethylene; XLPE = highly crosslinked polyethylene.