Cruciate-retaining |
Least amount of constraint restores near-normal knee kinematics Requires good bone, and intact collateral ligaments and PCL
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Posterior-stabilized |
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Constrained posterior-stabilized |
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Varus–valgus–constrained or condylar-constrained nonhinged knee |
Semiconstrained, nonlinked implant Varus–valgus stability, rotational stability
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Constrained hinged knee |
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