Edge displacement and deformation of glenoid components in response to eccentric loading. The effect of preparation of the glenoid bone.

The effect of different methods of preparation of glenoid bone on displacement and deformation of a glenoid component under eccentric loading was investigated in a series of scapulae of cadavera. Handburring of the osseous surface was associated with less displacement and deformation than simple removal of cartilage with a curet. Reaming resulted in the least displacement and deformation. Substantial posterior deficiency of the bone of the reamed glenoid was not associated with significant increases of displacement and deformation.