Trial acetabulum or implantable acetabulum with adjustable orientation

摘要

An acetabular cup includes a hemispheric acetabular shell designed to be set in a cotyloid cavity and a hemispheric insert made of biocompatible plastic material and designed to be engaged concentrically in the acetabular shell. An external base is provided with studs for anchoring in the cotyloid cavity bone and designed to receive the acetabular shell. An internal cup is designed to be placed in the acetabular cup opposite the external base and elements for linking the external base and the internal cup. The base and the cup define elements for adjusting the acetabular cup angular position in the cotyloid cavity according to the orientation to be given to the articulation while the elements linking the external base to the internal cup comprise elements for blocking the acetabular cup with respect to the external base after the acetabular cup angular position has been adjusted.