Disclosed herein is a humeral head trial, a system for humeral trialing, and a method for removing a humeral head trial from a humeral stem. The humeral head trial may include a first portion, a second portion, and a post extending from the second portion. The first portion may define a concave articular surface with a movable surface substantially flush with the concave articular surface. The post may define a first length in a first configuration and a second length in a second configuration. The first length may be greater than the second length. The post may change from the first configuration to the second configuration by moving the movable surface with respect to the concave articular surface.

An implant includes a body including a substrate and a bone interfacing lattice disposed on the substrate. The bone interfacing lattice includes at least two layers of elongate curved structural members. In addition, the at least two layers of elongate curved structural members include a first layer adjacent the substrate and a second layer adjacent the first layer. Also, the first layer has a first deformability and the second layer has a second deformability, wherein the second deformability is greater than the first deformability.

A method of performing an arthroplasty procedure on a shoulder that includes the following steps, among others. A step of accessing a posterior aspect of the humeral head. A step of cutting the humeral head in a posterior-to-anterior direction so as to form a resected bone surface. A step of cutting at least one channel into the resected bone surface and through a posterior aspect of the humeral cortex, the at least one channel extending in a posterior-anterior direction. A step of attaching a first component including a base plate of a joint replacement system to the resected bone surface, the base plate including at least one fin that is received within the at least one channel. A step of attaching a second component of the joint replacement system to the base plate.

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.

A method of performing an arthroplasty procedure on a shoulder that includes the following steps, among others. A step of accessing a posterior aspect of the humeral head. A step of cutting the humeral head in a posterior-to-anterior direction so as to form a resected bone surface. A step of cutting at least one channel into the resected bone surface and through a posterior aspect of the humeral cortex, the at least one channel extending in a posterior-anterior direction. A step of attaching a first component including a base plate of a joint replacement system to the resected bone surface, the base plate including at least one fin that is received within the at least one channel. A step of attaching a second component of the joint replacement system to the base plate.

A surgical procedure method includes accessing an implanted joint prosthesis having an implant engaged within a bone of the joint and a first articulating component mounted by a first mating component to a first insert component removably mounted to the implant, and partially disassembling the accessed implanted joint prosthesis by removing the first insert component with the first articulating component fixed thereto from the implant while the implant is engaged with the bone. The angular position of the first mating component with respect to the first insert component is then determined and replicated with a second insert component and a second mating component. The second insert component and the second mating component are then fixed at the replicated angle and the fixed second insert component and second mating component are mounted to the implant engaged within the bone. A new articulating component is then mounted to the second mating component.

A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

The invention concerns a method for manufacturing a prosthesis (11) for a fractured long bone of a patient, the method comprising the steps of: A) providing data representative of the fractured long bone, the fractured long bone comprising a diaphyseal fragment (2) comprising a medullary cavity (8); B) based on said data, designing the prosthesis specifically to the patient, the prosthesis comprising a stem part (12) configured to be inserted into the medullary cavity, step B) comprising: a sub-step of choosing, specifically to the patient, a contact zone (40) of the medullary cavity onto which a respective chosen mechanical stress is planned to be applied by the stem part, and a sub-step of designing the stem part so that the stem part may be inserted into the medullary cavity and thus apply the chosen mechanical stress to said contact zone; and C) manufacturing the prosthesis designed at step B).

Embodiments of an implant assembly for reverse shoulder arthroplasty is disclosed. In one embodiment, the implant assembly comprises a humeral component and an adaptor coupled to the humeral component. The humeral component comprises a stem portion and a neck portion. The stem portion is configured for fixation to a humerus, and the neck portion is angularly oriented relative to the stem portion. The adaptor comprises a first bearing surface and a second bearing surface opposite the first bearing surface. The first bearing surface interfaces with an articulating surface of the neck portion to allow the adaptor to rotate relative to the humeral component in a plane that is generally parallel to the articulating of the neck portion. The second bearing surface is configured to interface with a glenosphere component to allow the glenosphere component to articulate relative to the adaptor.

Various embodiments of the present invention provide systems and methods for treating a proximal humeral fracture. A system according to one embodiment includes a longitudinal member configured to be received within the humeral shaft. The system includes a jig assembly configured to be coupled to the longitudinal member, wherein the jig assembly includes at least one hole defined therethrough that is configured to guide placement of at least one hole in the humeral shaft, and wherein the hole formed in the humeral shaft is configured to align with at least one hole in the humeral implant such that the jig assembly is configured to locate the position of the humeral implant in the humeral shaft.