Define the Motions of Spin,slide,and Roll as They Relate to Intra-Articular

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The Answer is Spin is rotation about a fixed axis.Slide is a pure translatory or linear movement of one surface upon another,and roll would be rolling of one surface upon another (as in a rocking chair).Generally,intra-articular surfaces slide and roll upon one another in an attempt to produce as close to a pure spin as possible.This is rarely,if ever,achieved.

Define the Motions of Spin,slide,and Roll as They Relate to Intra-Articular

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