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Relative post location for the three contemporary PS knee designs
| Implant | Measurement (mm) | |||
|---|---|---|---|---|
| A | B | C | D | |
| Optetrak® | 13.2 | 14.4 | 1.3 | 68 |
| NexGen® | 14.9 | 9.6 | −1.7 | 65 |
| Genesis® II | 13.5 | 4.7 | −8.5 | 68 |
PS = posterior stabilized; A = overall width of the tibial post; B = distance of the anterior surface of the tibial post relative to the dwell point; C = distance of the posterior surface of the tibial post relative to the dwell point; and D = overall width of the tibial insert.
