A humeral prosthetic head has a non-spherical articulation surface coupled with an intermediate component connecting the head and the humerus, the intermediate component connected to the epiphysis, metaphysis, or diaphysis, or to one or more additional components connected to the humerus. The intermediate portion provides for axial and angular offset of the head with respect to a connection to the humerus, using a curvilinear tapered engagement.

A hip/shoulder prosthesis includes: a head component; a metaphyseal component; a diaphyseal nail, and a locking device. The head component includes: a front face and rear face; with a bore, and first and second shaped recesses in the rear face. The metaphyseal component includes: a central transverse aperture at an angle to the metaphyseal component's axis; a first end configured for threaded engagement within the bore of the head component; and a longitudinal hole that begins at the second end, transects the transverse aperture and reaches the first end, to receive the locking device. The diaphyseal nail is inserted in the femoral or humeral canal, and includes: fastening apertures that receive corresponding screws for fastening the diaphyseal nail to the femur or humerus; a portion configured to be received within, and engage, the transverse aperture of the metaphyseal component, and a transverse hole configured to receive the locking device.

A stemmed implant comprises a proximal body with a distal shaft extending from the proximal body. The proximal body exterior may be spherical, conical, cylindrical, or another surface of revolution. The distal shaft comprises multiple longitudinal ridges which may originate from the proximal body as separate columns, or which may merge together. The distal shaft and/or the ridges may become narrower as they extend away from the proximal body.

The invention features a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.

The invention relates to a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.

A stemless humeral anchoring component for a shoulder prosthesis humeral implant includes an anchoring stud secured to anchoring wings extending radially along the periphery of the anchoring stud. The anchoring wings include a lateral anchoring wing and two medial anchoring wings angularly spaced by an angle between 110 and 130 degrees. The lateral anchoring wing has a radially measured length greater than the radially measured lengths of the medial anchoring wings.

An integral humeral stem includes a diaphyseal portion which has, orthogonal to a diaphyseal axis, an octagonal cross-section with convex rounded angles, and a metaphyseal portion in the form of a flared corolla which extends the diaphyseal portion up to a proximal face, which has, orthogonal to a central axis, an octagonal cross-section with convex rounded angles so that the humeral stem has a peripheral surface provided with eight lateral facets and eight rounded fillets which continuously extend from the diaphyseal portion to the metaphyseal portion. On the metaphyseal portion, the rounded fillets progressively widen and the lateral facets progressively narrow from the diaphyseal portion in the direction of the proximal face.

A modular humeral implant for an inverted shoulder prosthesis includes a humeral stem having, on the one hand, a diaphyseal keel of elongate shape, extending along a diaphyseal axis and shaped to be engaged in a medullary cavity of a humerus, and, on the other hand, a metaphyseal portion. A humeral spacer is mounted on the metaphyseal portion of the humeral stem and has a lower face facing the metaphyseal portion, the lower face having a peripheral portion projecting laterally from the metaphyseal portion and covered at least partially with a porous or rough metal surface coating promoting an osseointegration. A humeral insert is fastened on the humeral spacer and has a hemispherical cap shaped to receive a glenosphere of a glenoid implant.

A medullary rod has a peripheral wall defining the outer shape of the medullary rod, and inwardly delimiting a hollow space. The medullary rod also has a plurality of first partitions. The first partitions are generally parallel to one another, extend between the inner side of the medullary rod located along the inner edge of the long bone after implantation, and the outer side of the medullary rod located along the outer edge of the long bone after implantation. Each of the first partitions is integral with the peripheral wall at these inner and outer sides of the medullary rod.

The invention concerns a prosthesis comprising: a stem part comprising: a rod, configured for being inserted into a medullary cavity of a diaphyseal fragment of a fractured long bone, for securing the stem part to the diaphyseal fragment, and an epiphyseal end, fixedly secured to the rod by means of at least one linker leg of the stem part, so that a gap is formed between the epiphyseal end and the rod along said at least one linker leg; and an implant distinct from the stem part and comprising: an internal part located at least partially within the gap, and at least one fastener for fastening epiphyseal fragments of the fractured long bone to the stem part, said at least one fastener being secured to the internal part.