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ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

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Figure 2 - Geometric model used to convert the vertical motion to stem micromotion.<br />

The geometric model used for calculating stem micromotion in coronal and sagittal<br />

loadings.<br />

4. RESULTS<br />

While edge loading was applied in the coronal and sagittal planes, respectively,<br />

displacement of the prothesis to the adjacent bone was measured : lateral and medial for<br />

coronal loading, and dorsal and volar for sagittal loading. From these data micromotion<br />

at the tip of the stem were calculated for applied loads of 20, 40 and 80N. The overall<br />

mean micromotion at the proximal tip of the stem are presented in the Figure 3.<br />

Figure 3: Mean micromotion for stem at the tip occurred during each loading at each<br />

edge.<br />

Calculated magnitudes of mean micromotion results for the Re-Motion prosthesis<br />

collected in 5 trials are presented in Table I.

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