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Several studies in literature are dealing with a direct comparison between fixed and mobile bearing knee replacements, but to our knowledge there is no published data comparing the wear behaviour of the two design principles based on the same femur and superior gliding surface geometry.
Hyaline cartilage provides a smooth, gliding surface that helps in the motion of the joint (Figure 1).
Functionally, the superficial zone is the articulating surface that provides a smooth gliding surface.
Stair ascent rotation was limited by the form fit between femur and gliding surface in extension.
Each degree of internal tibia malrotation can be added directly on the relative rotation between femoral component and gliding surface.
The wear test was performed on medium size Columbus CR TKA (Aesculap AG Tuttlingen, Germany) with the thinnest available gliding surface.
Similar(48)
The gliding surfaces of synovial joints are covered by articular cartilage.
Structural support and smooth gliding surfaces can be obtained by insertion of metallic devices; in the hip, for example, both the ball and the socket of the joint can be replaced.
Moreover, the atomic layers below the gliding surfaces contribute to the dissipation process significantly [18].
They were thought to function at the lubrication of the gliding surfaces.
Before wear testing the gliding surfaces were preconditioned in the test solution until no increase of weight was measurable.
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