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Patient demographics
| Demographic | PFC Sigma | PFC Sigma RP |
|---|---|---|
| Number of patients | 55 | 50 |
| Gender ratio: male/female | 33/22 | 20/30 |
| Mean age (SD) | 69.4 (7.9) | 70 (8.4) |
| Mean height (SD) | 167.4 (9.4) | 165.5 (8.7) |
| Mean weight (SD) | 81.9 (14.8) | 82.1 (13.5) |
| Mean BMI (SD) | 29.9 (5.4) | 29.7 (6.1) |
| KSS category A | 21 | 25 |
| KSS category B | 33 | 24 |
| KSS category C | 1 | 1 |
SD standard deviation, BMI body mass index, KSS Knee Society score
