Charnley Low-Frictional Torque Arthroplasty of the Hip by B.M. Wroblewski Paul D. Siney & Patricia A. Fleming

Author:B.M. Wroblewski, Paul D. Siney & Patricia A. Fleming
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The Head

The two parameters are the size and the materials used.

The size would be related to the frictional torque of the design, the perceived concept of stability and wear characteristics of the materials used. The materials would be related primarily to strength, wear and the ultimate fate of wear products within the body environment. In any modular system the head-neck assembly would have to be considered.

The Neck

The dimensions of interest are: strength and diameter; hence head-neck ratio and therefore the range of movements, in a plane, before impingement; the neck length and therefore its contribution to limb length; and the neck-shaft angle which would determine the offset of a particular design.

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