Table 1 Mean and standard deviations of the absolute AP kinematics of the distal and anterior tangency points during flexion-extension (flex-ext) and lunge activities, negative values indicate a posterior translation.
From: Weight Bearing Activities change the Pivot Position after Total Knee Arthroplasty
Distal Points | Anterior Tangency Points | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Flex-Ext (mm) | Lunge (mm) | Flex-Ext (mm) | Lunge (mm) | ||||||
Medial | Lateral | Medial | Lateral | Medial | Lateral | Medial | Lateral | ||
Implant Flexion Angle (°) | 0 | −4.6 ± 1.4 | −8.9 ± 1.1 | −4.4 ± 2.4 | −9.2 ± 1.7 | 28.1 ± 3.0 | 24.5 ± 2.7 | 28.5 ± 3.0 | 24.1 ± 2.1 |
10 | −4.7 ± 1.5 | −9.2 ± 1.3 | −4.1 ± 1.6 | −9.7 ± 2.2 | 27.5 ± 3.0 | 23.6 ± 2.7 | 28.0 ± 2.7 | 22.9 ± 2.2 | |
20 | −4.3 ± 1.7 | −9.2 ± 1.6 | −3.6 ± 1.1 | −10.1 ± 2.7 | 27.3 ± 3.1 | 22.8 ± 2.8 | 27.6 ± 2.3 | 21.6 ± 2.5 | |
30 | −3.7 ± 2.0 | −9.1 ± 1.7 | −3.3 ± 1.2 | −10.5 ± 3.1 | 27.3 ± 3.2 | 22.2 ± 2.7 | 27.4 ± 2.1 | 20.5 ± 2.9 | |
40 | −3.2 ± 2.3 | −9.1 ± 1.8 | −3.0 ± 1.3 | −10.9 ± 3.4 | 27.5 ± 1.2 | 21.7 ± 2.6 | 27.3 ± 1.9 | 19.6 ± 3.1 | |
50 | −2.4 ± 2.6 | −9.2 ± 1.9 | −3.0 ± 1.2 | −11.5 ± 3.7 | 27.9 ± 3.4 | 21.2 ± 2.5 | 27.1 ± 1.8 | 18.6 ± 3.6 | |
60 | −1.5 ± 2.6 | −9.5 ± 1.8 | 28.5 ± 3.2 | 20.6 ± 2.3 | |||||
70 | −0.8 ± 2.6 | −9.7 ± 1.8 | 28.8 ± 3.1 | 19.7 ± 2.3 | |||||
80 | 0.4 ± 2.6 | −10.0 ± 2.4 | 28.4 ± 3.1 | 17.5 ± 2.7 | |||||
