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A knee that is balanced in extension and tight in flexion.
1%
44/3316
A knee that is balanced in extension and loose in flexion.
91%
3016/3316
A knee that is tight in extension and tight in flexion.
30/3316
A knee that is loose in extension and loose in flexion.
3%
105/3316
A knee that is loose in extension and balanced in flexion.
88/3316
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Increasing the size of the femoral component posteriorly will balance a flexion-extension mismatch where the knee is loose in flexion and stable/balanced in extension. The referenced article by Peters discusses multiple different soft tissue balancing techniques used for trialing scenarios as well as for varus or valgus instability, and knees with flexion contractures. A knee tight or loose on both flexion and extension can be corrected by decreasing or increasing the size of the polyethylene, respectively. A knee that is tight in flexion/balanced in extension can be corrected by decreasing the AP diameter of the femoral component.
4.4
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