A humeral head assembly is provided that includes an articular body and a coupler. The articular body includes a coupling portion disposed on a side of the articular body opposite an articular surface. The coupling portion includes a continuous zone of eccentricity adjustment. The coupler portion optionally includes one or more than one discrete position site. The coupler includes a first portion and a second portion opposite the first portion. The first portion is configured to mate with the coupling portion and the second portion is configured to mate with another member of a joint prosthesis. A coupling portion with the continuous range of eccentricity adjustment can be provided on a bone anchor and the eccentricity of another component can be selected by motion of a coupler, such as a tray for reverse humeral assemblies, along the coupling portion of the anchor.

In some embodiments, disclosed is a glenohumeral implant with improved joint mobility. The implant can include a backing component; a neutral non-inclined bearing component on a concave side of the backing component, the bearing component made from a different material than the backing component and configured to touch a glenosphere having a center of rotation.

A humeral anchor for a shoulder prosthesis is disclosed. The humeral anchor includes a distal portion configured to be anchored in a proximal region of a humerus and a proximal portion, the proximal portion including a proximal face, where the proximal face includes an engagement feature configured to directly couple to a reverse shoulder insert having a concave proximal portion, and wherein the proximal face is further configured to directly couple with an anatomical shoulder insert having a convex proximal portion.

Provided is a method of manufacturing a prosthesis for a fractured long bone of a patient, the method including the steps of: A) providing data representative of the fractured long bone in a patient; B) based on said data, designing the prosthesis specifically to the patient, the prosthesis including a stem part that is configured to secure fragment(s) of the fractured long bone at chosen securing position(s) that will apply chosen mechanical stress onto the bone fragments and reduce the risk of osteonecrosis of the bone fragments.

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 he received within, and engage, the transverse aperture of the metaphyseal component, and a transverse hole configured to receive the locking device.

The invention relates to a modular humeral prosthesis for an inverse shoulder prosthesis, comprising an anatomical shaft (1) and a separable epiphyseal head (2) which may be angularly orientated by rotation about the longitudinal axis (XX) of the anatomical shaft. The anatomical shaft and the epiphyseal head comprise complementary angular indexing means (11, 28) for relative rotational fixation.

Provided is a shoulder joint prosthesis. The shoulder joint prosthesis may include an outer cup, a lining, a ball head and a humeral shank, and the outer cup, the lining and the ball head are nested in sequence. Herein, the outer cup may include an outer cup body and a first limiting convex wall configured at an opening of the outer cup body, the outer cup body has a first spherical inner cavity. The lining may include a hemispherical housing body and a second limiting convex wall and a third limiting convex wall configured at an opening of the hemispherical housing body, the hemispherical housing body has a second spherical inner cavity, the second limiting convex wall and the third limiting convex wall limit the ball head to leave the second spherical inner cavity, and the hemispherical housing body is provided with a groove for avoiding the humeral shank.

A method of implanting a joint prosthesis assembly for joint arthroplasty using a coupling mechanism is disclosed. The method includes exposing a joint of a patient, resecting a portion of the joint, inserting a second prosthesis of the joint prosthesis assembly into a medullary canal, and inserting a first prosthesis of the joint prosthesis assembly from a lateral side of the joint, The joint prosthesis assembly includes a magnet. The magnet is configured to lock the first prosthesis of the joint prosthesis a.ssembly to the second prosthesis of the joint prosthesis assembly. The first prosthesis of the joint prosthesis assembly includes a recess. The second prosthesis of the joint prosthesis assembly includes a protrusion. The recess is configured to house the protrusion. Alternatively, the first prosthesis and the second prosthesis may be assembled in a direct line using the magnet for secure coupling of the components.

A modular shoulder prosthesis is provided. The modular prosthesis includes a stem, an anatomic insert, and a reverse insert. The stem is a unitary body that includes a distal shaft portion and a proximal portion. The proximal portion includes a stem face configured to directly couple to both the anatomic insert and reverse insert. The stem face includes a first engagement feature configured to couple directly to the reverse insert and a second engagement feature configured to couple directly to the anatomic insert. The stem can also include a metaphyseal portion between the shaft portion and proximal portion designed for use in humeral fracture repair procedures. The metaphyseal portion can include a medial arm and two lateral arms extending between the shaft portion and proximal portion, A window can be defined between the medial arm and the lateral arms, and a gap can be formed between the lateral arms.

A humeral anchor for a shoulder prosthesis is disclosed. The humeral anchor includes a distal portion configured to be anchored in a proximal region of a humerus and a proximal portion, the proximal portion including a proximal face, where the proximal face includes an engagement feature configured to directly couple to a reverse shoulder insert having a concave proximal portion, and wherein the proximal face is further configured to directly couple with an anatomical shoulder insert having a convex proximal portion.