Table 2.
Operative characteristics comparing patients who had two-stage revision for PJI in cemented and cementless THA
| Variable | Cementeda (n = 36) | Cementless (n = 72) | p value |
|---|---|---|---|
| Prior open surgical procedures | 1.8 ± 1.4 | 1.6 ± 1.5 | 0.713 |
| Revision for infection | 18 (50%) | 36 (50%) | 1.000 |
| Sinus tract present | 7 (19%) | 15 (21%) | 0.866 |
| Time from index THA (years) | 9.3 ± 8.1 | 6.9 ± 6.8 | 0.113 |
| Radiographic implant loosening | |||
| Acetabular component | 13 (36%) | 25 (35%) | 0.887 |
| Femoral component | 18 (50%) | 20 (28%) | 0.023 |
| Paprosky bone loss, acetabular | 0.749 | ||
| 1 | 5 (14%) | 10 (14%) | |
| 2A | 7 (19%) | 20 (28%) | |
| 2B | 5 (14%) | 7 (10%) | |
| 2C | 10 (28%) | 23 (32%) | |
| 3A | 3 (8%) | 6 (8%) | |
| 3B | 6 (17%) | 6 8%) | |
| Paprosky bone loss, femoral | 0.004 | ||
| 1 | 9 (25%) | 27 (38%) | |
| 2 | 10 (28%) | 34 (47%) | |
| 3A | 8 (22%) | 7 (10%) | |
| 3B | 6 (17%) | 4 (6%) | |
| 4 | 3 (8%) | 0 (0%) | |
| Split osteotomy | 0 (0%) | 3 (4%) | 0.214 |
| ETO | 4 (11%) | 26 (36%) | 0.006 |
| Cortical window | 6 (17%) | 0 (0%) | 0.000 |
| Duration of first-stage surgery (minutes) | 167.2 ± 48.0 | 153.7 ± 56.3 | 0.220 |
| Reimplanted components at second-stage | |||
| Acetabular | 0.538 | ||
| Modular, porous-coated | 5 (14%) | 9 (13%) | |
| Highly porous metal | 21 (58%) | 51 (71%) | |
| Antiprotrusio cage | 6 (17%) | 8 (11%) | |
| Cemented | 4 (11%) | 4 (6%) | |
| Femoral | 0.003 | ||
| Extensively porous-coated | 19 (53%) | 56 (78%) | |
| Modular, fluted tapered | 13 (36%) | 16 (22%) | |
| Cemented | 4 (11%) | 0 (0%) | |
| Large diameter heads (≥ 36 mm) | 31 (86%) | 57 (79%) | 0.381 |
| Dual-mobility cups | 7 (19%) | 8 (11%) | 0.238 |
| Duration of second-stage surgery (minutes) | 150.8 ± 50.7 | 153.7 ± 56.3 | 0.774 |
Means and standard deviations are reported, and p values were calculated either from chi-square test or Mann–Whitney U test; bold—the significance level was p < 0.05
PJI periprosthetic infection; THA total hip arthroplasty; ETO extended trochanteric osteotomy
aCemented or hybrid total hip arthroplasty