Table 1.
Demographics of patients
| Variable | TNS group | Control group | p value |
|---|---|---|---|
| Number of patients (hips) | 40 | 25 | |
| Gender female:male, n (%) | 36 (90): 4 (10) | 22 (88): 3 (12) | p = 0.80 |
| Mean age at surgery (years) | 64.2 ± 10.7 | 64.1 ± 10.6 | p = 0.91 |
| Body mass index (kg/m2) | 24.6 ± 4.1 | 24.3 ± 2.6 | p = 0.89 |
| Implant | |||
| Stem, n | TNS stem: 40 | Versys Taper: 13 | |
| Synergy select II: 12 | |||
| Cup, n | ARC HA Cup:40 | Trilogy: 13 | |
| REFLECTION: 12 | |||
| Preoperative diagnosis, n (%) | |||
| Osteoarthritis | 35 (87.5) | 21 (84) | p = 0.69 |
| Idiopathic osteonecrosis of the femoral head | 5 (12.5) | 4 (16) | |
Results are the mean with a standard deviation. One patient in TNS group was lost at 3-year follow-up