A glenoid implant includes a body, a plurality of fins, a collet, and a plug. The body has a central aperture therethrough and a plurality of slots. Each of the plurality of fins are coupled with a respective one of the plurality of slots of the boss of the body such that each of the plurality of fins is configured to move from a first generally inward position towards a second generally outward position. The collet including an interior threaded bore and a plurality of deflectable arms. The plug includes a threaded portion and a tip portion configured to engage with and cause the plurality of deflectable arms of the collet to move and cause the plurality of fins to move from the first generally inward position towards the second generally outward position, thereby aiding in securing the body to a scapula of a patient.

A cement restrictor inserter instrument (130) comprises an inserter (131) having a handle (132) at a proximal end, a cement restrictor attachment formation (137) at a distal end for releasably attaching a cement restrictor (150), a shaft (136) extending from the proximal end to the distal end and a stop (138) on the shaft and between the proximal end and the distal end; and a body (140) having a shape corresponding to the shape of an orthopaedic prosthetic implant, a spacer (142), a visible depth guide feature (190) and a releasable attachment mechanism by which the body is releasably attachable to the shaft, and wherein the spacer is configured to position the visible depth guide feature at a fixed position relative to the inserter when the spacer abuts the stop corresponding to a target cement restrictor position when the visible depth guide feature is aligned with a feature of a bone of a patient in which the cement restrictor is to be inserted.

A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, a graphical user interface module, and optionally an imaging device. The handheld surgical tool includes a handle that may comprise at least one sensor for detecting orientation of the. A computing device and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.

Multi-hooded enarthrodial joint implant has a hard substance articulating cup including a hard substance head-receiving cup having an articular surface upon which a head of a joint can articulate, and which, in general, has a margin generally about a hemisphere more or less and at least two hoods that are marginally extended continuations of superior one-half or so of cup containment of a sufficient magnitude to reduce an overall dimension of socket outlet to less than a hemisphere, which can embrace and contain the head. The head is made of a hard substance and has a truncated generally circular cross section, a truncated surface with a feature for attachment of the stem, and an opposing articular surface for articulation against the articular surface of the ceramic head-receiving cup. As an ensemble, the cup is combined with the head, typically with a stem, for a total joint implant. The hard substance may be, for example, a composite substance, a metal or a metal alloy. Either the cup or the head, but not both, may be ceramic when employed in an ensemble.

Disclosed herein is a humeral head and cup trials, a system for humeral trialing, and a method for removing a humeral head and cup trial from a humeral stem. The humeral trial may include a first portion, a second portion, and a post extending from the second portion. The first portion may define an 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 first portion with respect to the second portion.

A shoulder arthroplasty kit includes a combination sizer and guide device with a base portion including a rim configured to be positioned against a resected surface of a humerus. A cavity which is configured to receive a mounting portion of a humeral base component extends proximally from the base portion, the cavity. The combination sizer and guide device includes a convex outer surface which replicates at least a part of an outer bearing surface of a humeral head component. A bore which is perpendicular to the distal plane extends between the cavity and the convex outer surface. The kit further includes a guide pin with a maximum diameter sized to fit within the bore such that the guide pin is guided by the bore during insertion of the guide pin into the resected surface of the humerus.

A shoulder arthroplasty kit includes a combination sizer and guide device with a base portion including a rim configured to be positioned against a resected surface of a humerus. A cavity which is configured to receive a mounting portion of a humeral base component extends proximally from the base portion, the cavity. The combination sizer and guide device includes a convex outer surface which replicates at least a part of an outer bearing surface of a humeral head component. A bore which is perpendicular to the distal plane extends between the cavity and the convex outer surface. The kit further includes a guide pin with a maximum diameter sized to fit within the bore such that the guide pin is guided by the bore during insertion of the guide pin into the resected surface of the humerus.

Methods, systems and devices for pre-operatively planned total or partial joint surgery including, for example, anatomic and reverse shoulder surgery guides and implants. There are also methods for pre-operative planning methods for designing glenoid implants and prostheses, particularly with patient-specific augmentation, based on considerations of multiple factors affecting the outcome of a selected reverse or anatomic shoulder surgery. There are also described methods of performing total or partial joint surgery, including anatomic or reverse shoulder surgery, using surgery guides and implants in patients undergoing joint surgery.

Methods, systems and devices for pre-operatively planned total or partial joint surgery including, for example, anatomic and reverse shoulder surgery guides and implants. There are also methods for pre-operative planning methods for designing glenoid implants and prostheses, particularly with patient-specific augmentation, based on considerations of multiple factors affecting the outcome of a selected reverse or anatomic shoulder surgery. There are also described methods of performing total or partial joint surgery, including anatomic or reverse shoulder surgery, using surgery guides and implants in patients undergoing joint surgery.

Disclosed herein is an implant. The implant can include a body and a plurality of fixation members. The body can define an articular surface and a bone engaging surface opposite the articular surface. The bone engaging surface can define a groove that separates a first section of the bone engaging surface from a second section of the bone engaging surface. The plurality of fixation members can extend from the bone engaging surface.