A method of ankle replacement includes forming an anterior cut in a bone and forming a stem hole in a distal end of the bone. The stem hole is formed using a plurality of broaches positioned against the distal end of the bone through the anterior cut. A first portion and a second portion of a stem implant are inserted into the stem hole through the anterior cut in the bone. The first portion is coupled to the second portion using a coupling device inserted through the anterior cut in the bone. The stem implant is impacted into the stem hole using an offset impactor.

An inclination guide for use with an implant insertion tool during a surgical procedure includes a unitary body having a clip configured to be coupled to a mounting surface of the implant insertion tool, an elongated riser extending from the clip, and an elongated indicator extending from the elongated riser to a distal end. Such a design allows for an inexpensive and lightweight inclination guide that may be easily and quickly adjusted after assembly.

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 knee joint prosthesis may be for implantation in a knee of a patient. The knee prosthesis may comprise a tibial component configured to be implanted on the tibia and a femoral component configured to be implanted on the femur. The femoral component may comprise a medial condyle with a medial articulation surface and a lateral condyle with a lateral articulation surface. The medial articulation surface and the lateral articulation surface may be shaped substantially symmetrically to each other across a femoral component plane bisecting the femoral component. The tibial component may comprise an articulation surface with a medial articulation side configured to articulate with the medial articulation surface and a lateral articulation side configured to articulate with the lateral articulation surface. The medial articulation side and the lateral articulation side may be shaped substantially asymmetrically to each other across a tibial component plane bisecting the tibial component.

An expandable intervertebral fusion implant, including an inferior component, including a first top surface, a first bottom surface, a first end including a first worm rotatably arranged therein, and a second end including a second worm rotatable arranged therein, a superior component, including a second top surface, a second bottom surface, a third end, and a fourth end, and a first expansion mechanism including a first screw, the first screw including a first bottom end connected to the inferior component and a first top end connected to the superior component, wherein as the first worm is rotated in a first circumferential direction, the first screw rotates in a second circumferential direction and the superior component is displaced relative to the inferior component.

An implant assembly for a long bone having a longitudinal axis. The implant assembly has a stem that is received in a surgically prepared medullary canal of the long bone. The stem defines at least one transverse through-opening that extends through the stem from a first portion of the outer surface of the stem to an opposed second portion of the outer surface of the stem. Each transverse through-opening has a central axis that is substantially perpendicular to the longitudinal axis of the stem. Each transverse through-opening receives a fastener and has a longitudinal dimension, measured relative to the longitudinal axis of the stem, that is sufficient to permit axial movement, relative to the longitudinal axis of the stem, of the stem relative to each fastener.

The present disclosure comprises a ball head, a neck part, a cover body, and a fastener, wherein the cover body is in a shape of a thin-walled cup, including a cup buckled and embedded on the femoral neck left after the femoral head is removed and a circle of skirt plates attached to the lower edge of the cup to extend the covering range of the cup to the femoral neck and the intertrochanteric femur; a through hole for a cable to penetrating through is formed in the tail end of each skirt plate, and a limiting clip for limiting the cable for cerclage of the cup is arranged outside the skirt plate; and then stable rigid connection is conducted using a compression ring; and the fastener comprises a screw or an additional perforated steel plate and a cable which is fixed in a cerclage and tension manner.

A modular shoulder prosthesis system, in at least one embodiment, provides flexibility in shoulder replacements and ability to switch between a traditional anatomic Total Shoulder Replacement (ta-TSR) to a reverse Total Shoulder Replacement (r-TSR). Optionally, the system provides for a modular adaptation for the glenoid side in a TSR. The system includes a baseplate, a modular component, a humeral base and a modular humeral component. The baseplate includes a base with at least two attachment points extending in from opposed outer circumferential sides of the base. The modular component and the modular humeral component configured to cooperate with each other. The baseplate and the humeral base, or alternatively a second baseplate, are capable of attachment to different modular components to facilitate both ta-TSR and r-TSR with a change in the attached modular component.

The present disclosure provides an implant component assembly for a joint replacement. The assembly comprises an implant component, the implant component including an interface part for attaching another implant component and an assembly channel. The assembly further comprises an assembly screw for securing the other implant component to the implant component, the assembly screw having a longitudinal axis, a screw head, and a screw shank and being insertable into the assembly channel. A screw retention unit of the assembly is configured for keeping the assembly screw within the assembly channel and allowing rotation of the assembly screw about the longitudinal axis.

Stemless components and fracture stems for joint arthroplasty, such as shoulder arthroplasty, are disclosed. Also, methods and devices are disclosed for the optimization of shoulder arthroplasty component design through the use of medical imaging data, such as computed tomography scan data.