A shoulder arthroplasty kit includes a humeral head component, a combination sizer and guide device substantially identical to the humeral component but including a including a guide bore, and a guide pin configured to be inserted into the resected surface of the humerus and configured to be guided by the guide bore to a center of the resected surface of the humerus which is covered by the at least one combination sizer and guide device.

An anterior lumbar interbody fusion device comprising a superior component, an inferior component, and a locking mechanism. The superior component bottom side and the inferior component top side oppose each other when these are received in the intervertebral space whereby their external sides abut against the respective vertebra, thereby coupling force between the latter. The components inter-engage with each other whereby they are constrained to move in an anterior-posterior direction relative to each other and resistance is presented to movement relative to each other in each of a direction of separation and a direction orthogonal to the anterior-posterior direction and to the direction of separation. The locking mechanism allows for relative movement of the components in the anterior-posterior direction which increases an extent of their overlap and presents resistance to movement of the at least one of the component in the anterior-posterior direction which decreases an extent of their overlap, for instance with a mechanism such as protrusions shaped to engage with set of recesses and sprung cantilever beams forming a ratchet mechanism. Optionally, the fusion device may comprise or lack a core component received between said superior and inferior components.

A stemless humeral head replacement system including a base plate and a humeral head implant. The base plate includes a bone facing side, an implant side opposite the bone facing side, a curvate perimeter, at least one fin protruding from the bone facing side a first distance and extending linearly a length along the bone facing side, and an implant engagement structure on the implant side. The humeral head implant includes a curvate implant surface and a base plate engagement structure opposite the curvate implant surface, the base plate engagement structure configured to couple to the implant engagement structure of the base plate.

A femoral prosthesis system for an orthopaedic hip implant and method of use is disclosed. The prosthesis system includes a femoral stem component that includes a core body and a casing that encases the core body. The casing can be additively manufactured such that the core body defines a predetermined orientation in the core body among a plurality of permissible predetermined orientations. The femoral stem component can further include a neck and a trunnion that extends from the neck. The neck can extend out with respect to the core body at a predetermined angle within a range of permissible predetermined angles.

Guides for guiding a tool into a medullary canal of a bone. The guides can include a base and a guide feature. The base can include a first surface configured to contact the bone and a second surface opposite the first surface. The guide feature can be disposed to guide the tool along a central portion of the medullary canal.

An intervertebral fusion device comprises a superior component, an inferior component, and a core component. The superior and inferior components are received between first and second vertebrae whereby a superior component top side of the superior component abuts against the first vertebra, and an inferior component bottom side of the inferior component abuts against the second vertebra. The core component is inserted between the superior and inferior components to determine a height of the intervertebral fusion device. First and second core profiles of the core component cooperate respectively with a first component profile of the superior component and a second component profile of the inferior component during insertion of the core component to guide the core component relative to the superior and inferior components. First and second core formations of the core component inter-engage respectively with a first component formation of the inferior component and a second component formation of the superior component to present a barrier to separation of the core component, the inferior component, and the superior component. A height of the intervertebral fusion device decreases in a coronal direction from a first lateral side to a second lateral side of the intervertebral fusion device.

An orthopaedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.

An intervertebral implant can include a core and a flexible end plate. The core can have a core body that is elongate along a first direction and defines first and second outer surfaces. The flexible end plate can define an inner surface and an opposed bone facing surface that is configured to abut a vertebral body. The flexible end plate can be coupled to the core such that at least a portion of the inner surface faces the first outer surface and is spaced from the first outer surface. The flexible end plate is configured to resiliently flex toward a compressed configuration such that as the flexible end plate flexes toward the compressed configuration, a first end moves relative to the core along the first direction and the portion of the inner surface moves toward the first outer surface.

An implant for insertion into a disc space between vertebrae, wherein the implant includes a spacer portion, a plate portion coupled to the spacer portion, two bone fixation elements for engaging the vertebrae and a retention mechanism for preventing the bone fixation elements from postoperatively backing-out of the plate portion. The retention mechanism may be in the form of a spring biased snapper element that is biased into communication with the bone fixation elements so that once the bone fixation element advances past the snapper element, the snapper element is biased back to its initial position in which the snapper element interfaces with the bone fixation elements. Alternatively, the retention mechanism may be in the form of a propeller rotatable between a first position in which the bone fixation elements are insertable to a second position where the bone fixation elements are prevented from backing-out.

Stand-alone interbody fusion devices for engagement between adjacent vertebrae. The stand-alone interbody fusion devices may include a spacer and one or more inserts or members coupled to the spacer. The inserts or members may be configured and designed to provide the apertures which are designed to retain bone fasteners, such as screws, and secure the implant to the adjacent vertebrae.