Research Article
Kinematics and Mechanical Properties of Knees following Patellar Replacing and Patellar Retaining Total Knee Arthroplasty
Table 2
Knee tibial tray mechanical properties during the gait cycle.
| | Gait cycle (patellar retaining) | Gait cycle (patellar replacement) | Heel strike | Single limb stance 1 | Single limb stance 2 | Toe off | Heel strike | Single limb stance 1 | Single limb stance 2 | Toe off |
| Flexion angle | 4° | 16° | 6° | 8° | 4° | 16° | 6° | 8° | Axial force (N) | 1531 | 2482 | 1636 | 2434 |
1531 | 2482 | 1636 | 2434 | Peak contact stress (MPa) | 13.36 | 16.35 | 19.51 | 24.63 | 14.39 | 19.43 | 22.37 | 28.07 | Stress increment | | | | | 7.71% | 18.84% | 14.66%, | 13.97% | High stress area | Medial | Medial | Medial and lateral | Medial and lateral | Medial | Medial | Medial and lateral | Medial and lateral |
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