Table 1.
Axial rotation details for the 12 implant designs
| Implant | Number of knees | Average rotation 0°–90° | Negative (reverse) rotation (%) | Normal rotation (%) | Less than 3° rotation (%) | Less than 5° rotation (%) | Less than 10° rotation (%) | Greater than 10° rotation (%) |
|---|---|---|---|---|---|---|---|---|
| LCS RP PS | 81 | 2.7 | 31 | 69 | 49 | 62 | 88 | 11 |
| LCS RP PCS | 106 | 2.5 | 32 | 68 | 58 | 79 | 97 | 3 |
| LCS APG | 49 | 2.7 | 29 | 71 | 51 | 57 | 86 | 14 |
| LCS MB | 23 | 5.2 | 22 | 78 | 39 | 57 | 74 | 26 |
| Sigma RP PS | 75 | 4.8 | 11 | 89 | 39 | 52 | 87 | 13 |
| Sigma RP-F PS | 48 | 5.6 | 10 | 90 | 33 | 46 | 88 | 12 |
| Sigma RP PCR | 15 | 5.2 | 20 | 80 | 27 | 40 | 80 | 20 |
| Legacy HF PS | 51 | 4.6 | 12 | 88 | 33 | 53 | 86 | 14 |
| Legacy PS | 28 | 2.9 | 25 | 75 | 39 | 57 | 86 | 14 |
| Ceragyr MP | 17 | 6.3 | 6 | 94 | 24 | 35 | 77 | 23 |
| SROM | 7 | 5.9 | 0 | 100 | 14 | 57 | 86 | 14 |
| MBKIII PCR | 27 | 2.3 | 37 | 63 | 56 | 70 | 89 | 11 |
PS = posterior stabilized; PCS = posterior cruciate sacrificing; PCR = posterior cruciate retaining.