Table 3.
Bearing surfaces in THA in patients 30 years of age and younger
| Bearing surface | Group I | Percent | Group II | Percent | Total | Percent |
|---|---|---|---|---|---|---|
| Metal on all-polyethylene acetabular component | 83 | 25.1 | 0 | 0 | 83 | 11.2 |
| Metal on CPE | 15 | 4.5 | 90 | 22.2 | 105 | 14.3 |
| Metal on HXLPE | 0 | 0 | 52 | 12.8 | 52 | 7.1 |
| Ceramic on Ceramic | 25 | 7.6 | 54 | 13.3 | 79 | 10.7 |
| Ceramic on HXLPE | 0 | 0 | 29 | 7.2 | 29 | 3.9 |
| Metal on metal | 0 | 0 | 54 | 13.3 | 54 | 7.3 |
| Not reported | 208 | 62.8 | 126 | 31.1 | 334 | 45.4 |
| Total | 331 | 405 | 736 |
CPE = conventional polyethylene; HXLPE = highly crosslinked polyethylene.