Abstract: Prosthetic augments to improve muscle mechanics are disclosed herein. A prosthetic augment of the present disclosure includes an augment member configured to engage a bone, the augment member having a first face adapted for contacting the bone; and a second face adapted for contacting an underside of a muscle, wherein at least a portion of the second face includes a bulbous surface adapted to alter a wrapping angle of the muscle around the bone, wherein a first thickness is defined between the first face and the second face at a first position on the augment member, wherein a second thickness is defined between the first face and the bulbous surface of the second face, and wherein the first thickness and the second thickness are not equivalent so as to result in the augment member having a non-uniform thickness.

Abstract: A prosthesis system of the present invention includes a monoblock stem extension including a proximal portion having a first neutral axis; and a distal portion defined by a longitudinal cylindrical shaft having a second neutral axis, wherein the second neutral axis is parallel and offset by a distance ? from the first neutral axis; and an eccentric bushing arranged coaxial around the cylindrical shaft of the monoblock stem extension, the eccentric bushing including an external cylindrical shaft having a third neutral axis; and an internal cylinder having a fourth neutral axis that is substantially co-linear with the second neutral axis of the monoblock stem extension, wherein the third neutral axis is parallel and offset by a distance ? from the fourth neutral axis.

Abstract: Disclosed herein is a kit that includes a humeral stem having a central longitudinal axis, the humeral stem configured to attach to a resected bone; a first tuberosity component having a first thickness relative to the central longitudinal axis of the humeral stem; a second tuberosity component having a second thickness relative to the central longitudinal axis of the humeral stem, wherein the first thickness of the first tuberosity component is different than the second thickness of the second tuberosity component; and at least one proximal segment configured to engage at least one of the first tuberosity component and the second tuberosity component. In an embodiment, the first thickness of the first tuberosity component is at least 20 mm relative to the central axis of the humeral stem, and the second thickness of the second tuberosity component is at least 20 mm relative to the central axis of the humeral stem.

Abstract: A talar implant, comprising: a superior surface, defined by an arc having at least one first radius; an inferior surface, defined by an arc having at least one second radius, a lateral side; a medial side; a posterior portion having a first width; and an anterior portion having a second width; wherein the implant is configured to restore a tibio-talar joint tension, wherein the superior surface is separated from the inferior surface by a thickness, wherein the at least one first radius is smaller than the at least one second radius, wherein the center of the arc having at least one first radius is offset from the center of the arc having at least one second radius in at least one plane of the talar implant, and wherein the anterior portion further comprises an extension configured to provide support.

Abstract: A talar implant, comprising: a superior surface, defined by an arc having at least one first radius; an inferior surface, defined by an arc having at least one second radius, a lateral side; a medial side; a posterior portion having a first width; and an anterior portion having a second width; wherein the implant is configured to restore a tibio-talar joint tension, wherein the superior surface is separated from the inferior surface by a thickness, wherein the at least one first radius is smaller than the at least one second radius, wherein the center of the arc having at least one first radius is offset from the center of the arc having at least one second radius in at least one plane of the talar implant, and wherein the anterior portion further comprises an extension configured to provide support.

Abstract: Disclosed is a prosthetic augment designed to reconstruct a lateral tuberosity shape of a humerus in a subject having proximal bone loss that includes a humeral adapter tray configured to connect a humeral liner of a reverse shoulder prosthesis to a humeral stem of the reverse shoulder prosthesis and an augment member having a first face adapted for contacting the humeral stem of the reverse shoulder prosthesis and a second face adapted for contacting an underside of a muscle, wherein at least a portion of the second face includes a bulbous surface adapted to alter a wrapping angle of the muscle around the lateral tuberosity, and wherein the second face has a radius of curvature selected from one of a constant radius of curvature or a variable radius of curvature.

Abstract: A prosthesis system (100) of the present invention includes a monoblock stem extension (10) comprising a proximal portion (20) having a first neutral axis (20a); and a distal portion (30) defined by a longitudinal cylindrical shaft (31) having a second neutral axis (30a), wherein the second neutral axis (30a) is parallel and offset by a distance a from the first neutral axis (20a): and an eccentric bushing (50) arranged coaxial around the cylindrical shaft (31) of the monoblock stem extension (10), the eccentric bushing (50) comprising an external cylindrical shaft (51) having a third neutral axis (51a); and an internal cylinder (53) having a fourth neutral axis (50a) that is substantially co-linear with the second neutral axis (30a) of the monoblock stem extension (10), wherein the third neutral axis (5 1 a) is parallel and offset by a distance ? from the fourth neutral axis (50a).

Abstract: Provided is an intervertebral implant to be implanted within an intervertebral space between endplates of adjacent vertebra during use. The implant includes an upper member having an inferior surface including an upper guide track and a superior surface to contact an endplate of an upper one of the adjacent vertebra during use, a lower member having a superior surface including a lower guide track and an inferior surface to contact an endplate of a lower one of the adjacent vertebra during use, and an insert having a superior surface including an upper guide rail to engage the upper guide track during use and an inferior surface including a lower guide rail to engage the lower guide track during use. Engagement of the upper and lower guide rails with the upper and lower guide tracks, respectively, guides insertion of the insert between the upper and lower members during use, and insertion of the insert between the upper and lower members facilitates expansion of the intervertebral implant.

Abstract: In some embodiments, an intervertebral implant may include a body including a superior and an inferior surface. The implant may include a first channel extending from an anterior end towards the posterior end of the body. The implant may include a first anchor channel The implant may include a first guide member positionable in the first channel The implant may include a first anchor. When the first guide member moves from a first position to a second position the first anchor may be conveyed through the first anchor channel and couple the body to an adjacent vertebra.

Abstract: A system includes a patella trial comprising a baseplate and an articular surface member configured to move along at least one of a medial-lateral axis or a superior-inferior axis of the baseplate; and an implant comprising a posterior articular surface and an anterior surface, wherein the anterior surface has a medial/lateral width with a midpoint, wherein the posterior articular surface has a posterior-most point, wherein an imaginary line extending through the posterior-most point is parallel to an imaginary line extending through the midpoint, and wherein a distance (I) is defined by measuring a length between the imaginary line extending through the posterior-most point and the imaginary line extending through the midpoint; wherein the implant is selected from a set of implants each having a different I, and wherein the chosen implant is selected based on an offset of the articular surface member relative to the baseplate on the patella trial.

Abstract: Various embodiments of the present invention relate to an apparatus and method for reverse shoulder arthroplasty (e.g., reverse total shoulder arthroplasty). In one specific example, a glenoid component used to resurface the scapula may be provided. Of note, unlike traditional total shoulder arthroplasty the glenoid component in a reverse shoulder is convex rather than concave; it acts as a physical stop to prevent the superior migration of the humeral head—a typical occurrence in patients suffering from rotator cuff tear arthropathy (CTA).

Abstract: In some embodiments, an intervertebral implant may include a body including a superior and an inferior surface. The implant may include a first channel extending from an anterior end towards the posterior end of the body. The implant may include a first anchor channel The implant may include a first guide member positionable in the first channel The implant may include a first anchor. When the first guide member moves from a first position to a second position the first anchor may be conveyed through the first anchor channel and couple the body to an adjacent vertebra.

Abstract: Disclosed herein are components of a reverse shoulder prosthesis. In an embodiment, a reverse shoulder prosthesis includes a humeral adapter tray configured to sit near a resected surface of a humerus, the humeral adapter tray comprising: a cavity; a central bore; and a distal face including a boss, the boss: (i) configured as an extension of the distal face, (ii) posteriorly offset from the central bore by at least 10 mm, and (iii) configured to engage a humeral stem; and a humeral liner comprising: a distal rim configured to sit within the cavity of the humeral adapter tray; and a concave articulating surface configured to mate with a convex articulating surface of a glenosphere. In an embodiment, the boss, in addition to being posteriorly offset, is superiorly offset from the central bore by at least 8 mm. In an embodiment, the reverse shoulder a humeral stem which engages the boss.

Abstract: Various embodiments of the present invention relate to an apparatus and method for reverse shoulder arthroplasty (e.g., reverse total shoulder arthroplasty). In one specific example, a glenoid component used to resurface the scapula may be provided. Of note, unlike traditional total shoulder arthroplasty the glenoid component in a reverse shoulder is convex rather than concave; it acts as a physical stop to prevent the superior migration of the humeral head—a typical occurrence in patients suffering from rotator cuff tear arthropathy (CTA).

Abstract: A system includes a patella trial comprising a baseplate and an articular surface member configured to move along at least one of a medial-lateral axis or a superior-inferior axis of the baseplate; and an implant comprising a posterior articular surface and an anterior surface, wherein the anterior surface has a medial/lateral width with a midpoint, wherein the posterior articular surface has a posterior-most point, wherein an imaginary line extending through the posterior-most point is parallel to an imaginary line extending through the midpoint, and wherein a distance (I) is defined by measuring a length between the imaginary line extending through the posterior-most point and the imaginary line extending through the midpoint; wherein the implant is selected from a set of implants each having a different I, and wherein the chosen implant is selected based on an offset of the articular surface member relative to the baseplate on the patella trial.