An intervertebral implant includes a body formed as an open lattice structure by a plurality of struts. Some of the struts of the plurality of struts intersect at nodes. The nodes can include an enlarged contact member that extends over the node and at least a portion of the width of some of the struts. Enlarged contact members may have an asymmetrical shape with respect to the intersection of struts. The enlarged contact members can provide improved bone contact for the implant. The plurality of struts can have a cross-sectional shape that includes a flattened portion. The flattened portion of the plurality of struts can provide improved bone contact for the implant. An additive manufacturing process can be used to build the implant in a substantially vertical direction.

An implant may include a body having a leading edge portion, a trailing edge portion, and an intermediate portion. The leading edge portion may include a substantially smooth surface forming a substantial majority of a leading edge surface and the trailing edge portion may include a monolithic structure including at least one receptacle configured to receive an insertion tool. The intermediate portion may include a plurality of elongate curved structural members continuously formed with at least one of the leading edge portion and the trailing edge portion. In addition, the elongate curved structural members may be configured such that the intermediate portion remains substantially rigid under compressive forces during insertion of the implant between bone surfaces of a patient. Also, the elongate curved structural members may include an elongate curved structural member extending longitudinally from the leading edge portion to the trailing edge portion and having a substantially sinusoidal configuration.

An intervertebral implant includes a first endplate member and a second endplate member, and a distal wedge member and a proximal wedge member that couple the first and second endplate members together. The distal wedge member is configured to move in an expansion direction that causes the fusion cage to move from a contracted position to an expanded position.

An intervertebral implant may include an anterior plate forming a first monolithic structure defining a first end of the implant, and including at least two screw holes each configured to receive a bone screw; and a plurality of coils extending from the anterior plate about a periphery of the implant. The screw holes may be angled such that, when the implant is inserted between two adjacent vertebrae, bone screws are guided into the adjacent vertebrae.

A shoulder assembly is provided which includes a base member including a collar; a helical structure extending from the collar in a distal direction; and a first pathway projecting distally of the collar and through the helical structure adjacent to an inner periphery thereof, the first pathway being generally transverse to the helical structure and extending in a space between successive portions of the helical structure; and a locking device comprising a proximal support and a first arm projecting distally of the proximal support, the first arm configured to be disposed in the first pathway projecting distally of the collar when the proximal support is disposed adjacent to the collar; where the first arm is disposed through bone in the space between successive portions of the helical structure when the shoulder assembly is implanted.

A spinal joint distraction system for treating a facet joint including articular surfaces having a contour is disclosed and may include a delivery device including a generally tubular structure adapted to engage a facet joint, an implant adapted to be delivered through the delivery device and into the facet joint, the implant comprising two members arranged in opposed position, and an implant distractor comprising a generally elongate member adapted to advance between the two members of the implant causing separation of the members and distraction of the facet joint, wherein the implant is adapted to conform to the shape of the implant distractor and/or the articular surfaces of the facet upon being delivered to the facet joint. Several embodiments of a system, several embodiments of an implant, and several methods are disclosed including a method for interbody fusion.

Devices for fixing interbody fusion devices to bone by helically or corkscrew-shaped elements are provided. Methods for surgically implanting an interbody fusion device using helically-shaped fixation wire are provided.

A method of implanting a shoulder prosthesis assembly is provided where the method includes advancing by rotation a base member, that includes a cylindrical member and a helical structure, into a resection face of a humerus of a patient such that the helical structure is submerged in and engages cancellous bone of and does not extend distally of an epiphysis of the humerus, the cylindrical member being accessible at the resection face of the humerus when the base member is so advanced; advancing a locking device into the base member until at least one elongate member spans a space between adjacent portions of the helical structure to contact the cancellous bone in the space; and inserting a retention portion of a reverse articular insert into the cylindrical member of the base member to directly connect the reverse articular insert with the cylindrical member of the base member.

A stemless humeral shoulder assembly having a base member and an anchor advanceable into the base member. The base member can include a distal end that can be embedded in bone and a proximal end that can be disposed at a bone surface. The base member can also have a plurality of spaced apart arms projecting from the proximal end to the distal end. The anchor can project circumferentially into the arms and into a space between the arms. When the anchor is advanced into the base member, the anchor can be exposed between the arms. A recess can project distally from a proximal end of the anchor to within the base member. The recess can receive a mounting member of an anatomical or reverse joint interface.

A humeral anchor assembly is provided that includes a humeral anchor and at least one screw. The humeral anchor is configured to form a part of or support a part of a shoulder prosthesis. The humeral anchor has a distal portion configured to be anchored in a proximal region of a humerus and a proximal portion. The proximal portion includes a proximal face configured to engage an articular component within a periphery thereof. The proximal portion also includes at least one aperture disposed adjacent to the periphery. The at least one screw is disposed through the at least one aperture. The screw has a first end portion engaged with the proximal portion of the anchor and a second end portion disposed in or through cortical bone of the humerus.