| Study Feature | Martell et al. [2] | Dorr et al. [7] | Triclot et al. [14] | Lachiewicz et al. [28] | Capello et al. [38] | Kim et al. [45] |
| Patient age (yr) | 60.0 (28 - 76.0) | 60.2 ± 16.2 | 70.6 (44 - 85) | 61.1 (27 - 87) | 55.8 ± 10.0 | 28.3 (21 - 29) |
| Patient bodymass index (kg/m2) | 30.6 (18.1 - 48.0) | NS | 26.2 (17.6 - 39.6) | 29.0 (18.9 - 46.4) | 27.4 ± 4.5 | 25.0 (22.4 - 27.2) |
| Number of surgeons | >1 | 1 | 1 | 1 | 1 | 1 |
| Acetabular cup design and fixation method | Secur-Fit HA (Stryker); | NS | Fitmore (Zimmer); uncemented | Trilogy (Zimmer); uncemented | Secur-Fit HA PSL (Stryker); uncemented | Duraloc 100/1200 (DePuy); uncemented |
| Femoral stem design and fixation method | Secur-Fit or Secur-FitPlus HA (Stryker)/ cementedor uncemented | Anatomic Porous Replacement (Zimmer)/ uncemented; Apollo (Zimmer) cemented; Anatomic Medullary Locking (DePuy) | Emeraude (Zimmer) | NS | Omnifit HA (Stryker); uncemented | Immediate Postoperative Stability (DePuy); uncemented |
| Follow-upa (yr) | 2 | “at least 5” | 4.9 (4.2 - 6.1) | 5.7 (5 - 8) | 8.6 (7.0 - 10.3) | 10.8 (10 - 12) |
| Number of hips available for analysis at latest follow-up | 36 | 37 | 49 | 102 | 42 | 60 |