Table 2.
Mean posterior translation in mm (with standard deviation), in response to 150 N posterior force with 0 and 710 N axial force applied (n = 8)
| Flexion angle | Native knee | CR TKA | CR TKA—PCL | CR TKA—PCL–PostCap |
|---|---|---|---|---|
| 0 N axial force | ||||
| 0° | 6.3 (1.7) | 7.4 (1.3) | 9.1 (1.0) | 10.6 (2.0)* |
| 30° | 5.8 (2.5) | 7.6 (0.8) | 12.6 (2.6)*,β | 13.4 (3.2)*,β |
| 60° | 4.3 (2.5) | 6.7 (1.4) | 14.2 (3.2)*,β | 15.5 (3.3)*,β |
| 90° | 4.7 (2.6) | 7.7 (2.4) | 16.2 (3.6)*,β | 16.8 (4.0)*,β |
| 710 N axial force | ||||
| 0° | 5.3 (1.4) | 2.7 (0.9) | 2.9 (1.2) | 3.0 (1.1) |
| 30° | 3.4 (1.4) | 3.8 (1.0) | 5.1 (2.0) | 5.5 (2.0) |
| 60° | 1.9 (1.7) | 3.0 (0.7) | 6.1 (2.1) | 6.6 (2.2) |
| 90° | 3.8 (3.9) | 3.3 (1.9) | 6.6 (1.5) | 6.9 (2.1) |
Key to content: CR TKA cruciate-retaining total knee arthroplasty with deep-dished insert, PCL posterior cruciate ligament, PostCap posterior capsule release
*Significant difference from the native state (p < 0.05)
βSignificant difference from the CR TKA state (p < 0.05)