Effect of component conformity in total shoulder arthroplasty: theoretical and experimental observations

Abstract

At present, there are several total shoulder arthroplasty systems available to the orthopaedic surgeon. The present work examines the relationships between transverse forces and translations for components with different conformities. A theoretical model on the knee joint is adopted and validated through an experiment. Theoretical predictions are compared with experimental results. Experimental results qualitatively confirm the validity of the theory. However, discrepancies are apparent between the theoretical and experimental results due to either deformation or rocking of the glenoid component. Results obtained imply that the maximal allowable force experienced by a glenoid component is not related to the amount of component conformity.

Publication Title

American Society of Mechanical Engineers, Bioengineering Division (Publication) BED

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