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Comparative analysis between the present study and our historic control groups
| Stem design | Ra (μm) | Number of hips | Average followup (years) | Osteolysis/radiolucent lines (number of cases and %) | Revisions for aseptic loosening (number of cases and %) | |
|---|---|---|---|---|---|---|
| Present study | VerSys CT | 0.05 | 54 | 6.1 | 4 (7.2%) | 0 (0%) |
| Historic control groups | VerSys Satin (25) | 0.4–0.5 | 138 | 5.2 | 3 (2.2%) | 0 (0%) |
| VerSys Rough (25) | 1.4–2 | 64 | 5.7 | 10 (15.6%) | 8 (12.5%) |
