The invention relates to an expandable acetabular cup (46) which is designed to eliminate the difficulties associated with positioning in the acetabulum of the patient. The inventive device comprises a hemispherical acetabular cup (46) which is partially slotted at six points to facilitate the expansion...http://www.google.com.au/patents/US20050171614?utm_source=gb-gplus-sharePatent US20050171614 - Expandable, supporting acetabular cup
