Group A (control) (n=51) | Group B (single-use instrumentation) (n=49) | p value | |
---|---|---|---|
Demographics | |||
Gender (male); n (%) | 21 (41%) | 22 (45%) | 0.330 |
Age (years) | 71.1 (9.2) | 70.2 (9.5) | 0.632 |
BMI (kg/m2) | 28.6 (3.3) | 27.6 (3.6) | 0.141 |
HKA angle (°) | 176.7 (4.2) | 176.7 (4.3) | 0.960 |
Operative parameters | |||
Operative time (min) | 148.2 (16.2) | 153.8 (22.8) | 0.159 |
Instrument trays (n) | 8.0 (0.8) | 5.1 (0.9) | <0.001 |
Sterilisation cost (CHF) | 380 (47) | 243 (55) | <0.001 |