MULTI-COMPONENT PROSTHESIS WITH INCREASED WALL FLEXIBILITY FACILITATING COMPONENT ASSEMBLY

摘要

Assembly of the components of a multi-component prosthesic is facilitated by constructing at least one of the components as a non-symmetrical segmented open shell whereby the segmenting of the shell increases the flexibility of the shell wall which flexibility in turn facilitates component assembly; such flexibility also enhances the engagement of retaining means for retaining the components together upon assembly. Screws utilized to secure a prosthesis component to a bone are recessed within the seat of a screw hole formed in the component for receiving the screw and generally area contact is achieved between the underside of the screw head and the seat of the screw hole by making both the underside of the screw head and the screw hole seat spherical--additionally, a second component engaging the first component may be provided with a recess overlying the screw hole whereby in the event the screw head extends upwardly out of the screw seat the recess accommodates the screw head.