Glenoidal component, set of such components and shoulder prosthesis incorporating such a glenoidal component

摘要

This glenoidal component for a shoulder prosthesis comprises a base which may be immobilized on the glenoid cavity of a shoulder, and an element provided to be mounted on this base and forming a convex surface of articulation centered on an axis of symmetry. This axis of symmetry is non perpendicular to a rear face of the base intended to abut against the glenoid cavity, this making it possible to compensate a defect in parallelism between the resectioned surface of the glenoid cavity and the axis of the patient's spinal column.;A surgeon can select the component most adapted to the orientation of the resectioned surface from a set of components in which the axes of symmetry of the components are oriented differently with respect to their rear faces.

主权项

1. A plurality of glenoidal components for a shoulder prosthesis adapted to compensate defects in parallelism between a resected surface of a glenoid cavity and an axis of a patient's spinal column, the plurality of glenoidal components comprising:
a first base comprising a front surface and a rear surface with an anchoring stem comprising a longitudinal axis, the longitudinal axis of the anchoring stem arranged at a first non-perpendicular angle with respect to the front surface and at a second non-perpendicular angle with respect to the rear surface, wherein the first non-perpendicular angle is different from the second non-perpendicular angle; a second base comprising a front surface and a rear surface with an anchoring stem comprising a longitudinal axis, the longitudinal axis of the anchoring stem arranged at a third non-perpendicular angle with respect to the front surface and at a fourth non-perpendicular angle with respect to the rear surface, wherein the third non-perpendicular angle is different from the fourth non-perpendicular angle; and a glenoid portion comprising a convex articular surface and a rear surface, the convex articular surface centered on an axis of symmetry, wherein the axis of symmetry is non-coincident with the longitudinal axis of the anchoring stem when the glenoid portion is engaged with one of the first base and the second base.