Total trochitero-acromial shoulder prosthesis

Method for implanting a total trochitero-acromial shoulder prosthesis comprising a trochiterian element having the shape of a convex spherical sector and equipped with means for fastening to the site of the trochiter, and an acromial element (12) having a bearing surface for the trochiterian element (13) and equipped with means for fastening to the lower face of the acromion, the acromial element being configured to cover the trochiterian element and being dimensioned to remain free to move, without overshooting the clavicle, as one with the acromion, the latter having been sectioned at the level of the pillar of the scapular spine, the method comprising implanting the trochiterian element, sectioning the acromion at the level of the pillar of the scapular spine, and fastening the acromial prosthesis element under the acromion, such that the prosthesis remains free in relation to the scapular spine so as to act as a patelliform articulation.