Table 1. Comparison of Demographic Variables and Intraoperative Characteristics between the Two Groups.
| Variable | Attune | PFC Sigma | p-value | ||
|---|---|---|---|---|---|
| Demographics | |||||
| Age (yr) | 65.9 (7.7) | 65.6 (6.8) | 0.83 | ||
| Body mass index (kg/m2) | 31.9 (5.1) | 31.9 (5) | 0.99 | ||
| Sex | |||||
| Female | 63 | 63 | - | ||
| Male | 9 | 9 | - | ||
| Diagnosis | |||||
| Osteoarthritis | 68 | 68 | - | ||
| Rheumatoid | 4 | 4 | - | ||
| Intraoperative parameter | |||||
| Alignment (°) | 8.8 (4.3) | 10.6 (5.9) | 0.04 | ||
| Patella button size (mm) | 33.5 (2.1) | 34.1 (2.6) | 0.10 | ||
| Soft-tissue release | |||||
| Lateral retinacular | 2 | 5 | 0.40 | ||
| Posteromedial | 0 | 3 | 0.20 | ||
Values are presented as number (%).