Abstract: Bone anchors and related methods are disclosed herein. In some embodiments, a bone anchor can include a drag interface. Exemplary drag interfaces include (i) friction between a shank and a bushing, (ii) friction between a bushing and a drag ring, (iii) friction generated by a biased saddle, and (iv) combinations of the above. The drag interface can help maintain the relative position between a receiver member and a shank of the bone anchor prior to locking the bone anchor, preventing unintended movement while still allowing free movement when intended by the user. In some embodiments, a bone anchor can include over-rotation blocking features, such as a groove, lip, or protrusion formed on a bushing of the bone anchor. Various other bone anchor features are also disclosed, including high aspect ratio drag rings and compressible drag posts.

Abstract: A reamer shaft extension includes a shaft positioned between a first end having a first coupling and a second end having a second coupling. The first coupling of each reamer shaft extension is selectively couplable with the second coupling of another reamer shaft extension such that a select amount of reamer shaft extensions are assembled together to form a reamer shaft extension assembly for use in a reaming procedure. Each reamer shaft extension further has a sufficiently short enough length such that each reamer shaft extension is insertable within a sterilization tray for use in a sterilization procedure.

Abstract: Devices, instruments, assemblies, and systems for holding and inserting staples and staples for compressing bones or bone fragments. The staple insertion assembly including a staple holder and a staple. The staple holder including a first and second end with a gripping portion at the first end, at least one slot extending from second end toward first end, and a receiving portion at the second end. The receiving portion with at least one staple contact portion, a first recessed region positioned adjacent to the at least one staple contact portion on a first side and a second recessed region positioned adjacent to the at least one staple contact portion on a second side, and a first engagement member positioned adjacent to the first recessed region and a second engagement member positioned adjacent to the second recessed region. Methods for using the assemblies to compress bones or bone fragments are also disclosed.

Abstract: The invention concerns an inner plate fixator device (1) for the correction of severe bone malformations, of the type comprising an elongated plate (2, 2?) in which through holes (3, 4) for receiving bone screws are provided. The use of this fixator device allows the pediatric correction of severe bone malformations, in particular malformations of the proximal portion of the femur.

Abstract: A bone screw comprises a shaft including a proximal portion, a distal portion and a wall including at least one thread having an external thread form having a lattice configuration. The thread form defining at least one void configured for bone growth therethrough. The distal portion is fabricated onto the proximal portion by an additive manufacturing method. In some embodiments, systems, spinal constructs, surgical instruments and methods are disclosed.

Abstract: A fixation implant includes a head, a shank and a distal tip, and one or more of the head, shank and distal tip may be cannulated. The shank includes a threaded ingrowth portion extending from the head to the tapered distal tip that includes external threads, and at least one open network body extending along the length of the ingrowth portion. The open network body selected from one or a combination of a helix, an arrangement of trusses, a scaffold of open and interconnected pores, a porous framework of random open and interconnected pores, and combinations of these.

Abstract: A medical device can include a housing, a first seal structure, and a seal expander. The first seal structure can have a proximal end and a distal end, and a side wall surrounding and defining an interior chamber. A seal wall can be connected to the side wall and include an expandable opening. A seal expander can be coupled to the housing, and can be at least partially in the interior chamber of the first seal structure. The seal expander can include an expandable neck portion and a seal interface portion, the seal interface portion being near an intersection of the side wall and the seal wall.

Abstract: A method for fixating or stabilizing a subject's mandible and maxilla includes providing multiple bone fasteners, providing two arch bars, attaching a first grouping of the bone fasteners to the subject's mandible, then securing the first arch bar to the first grouping of bone fasteners, attaching a second grouping of the bone fasteners to the subject's maxilla, then securing the second arch bar to the second grouping of bone fasteners, and then fastening the first arch bar to the second arch bar.

Abstract: An arrangement for the preparation of the proximal surface of the tibia for a tibia component of a prosthetic knee joint, wherein the arrangement includes a preparation plate that assists in defining a reference plane. A cutting guide arrangement includes an indicator that provides orientation for a cutting blade or saw to cut the final bone resection of the proximal surface of the tibia the same as the reference plane. There is also a mounting arrangement between the joint liner and the cutting guide arrangement, so that in a first mounting position the indicator of the cutting guide is aligned with the same referenced plane defined by the underside of the joint liner and wherein the mounting arrangement also provides a second mounted position wherein the indicator of the cutting guide is aligned with the same referenced plane orientation of the underside of the joint liner but below the initial resected proximal surface of the tibia where the final resection of bone will take place.

Abstract: A surgical retractor includes a part defining a longitudinal axis. A first radiolucent blade is connected with the part. A second radiolucent blade is connected with the part. The blades are independently translatable relative to the part. At least one of the blades includes spaced apart arms that are connected via a member. The member and the arms are relatively disposed in a configuration to guide at least one surgical instrument in a selected orientation relative to a surgical site. Surgical systems, instruments, constructs, implants and methods are disclosed.

Abstract: A surgical instrument comprises a first portion defining a cavity configured for disposal of a first implant support member. A second portion defines at least one passageway aligned with the cavity and including a guide engageable with a second implant support member to orient the second implant support member with the at least one passageway such that the second implant support member is connectable with the first implant support member. Systems, spinal constructs, spinal implants and methods are disclosed.

Abstract: An adjustable spinal fusion intervertebral implant is provided that can comprise upper and lower body portions, and proximal and distal wedges. An actuator shaft disposed intermediate the upper and lower body portions can be actuated to cause proximal and distal wedges to converge towards each other. The implant comprises one or more channels that interact with a bone graft inserter to direct the flow of material through the implant. The bone graft inserter and methods of use are also provided.

Abstract: A device for bone fixation comprising: a bone plate (1) which has a plate hole (2) suitable for receiving a bone screw (20), the plate hole (2) having an inner wall (4) made of a material which has a hardness Hp; and a hollow cylinder- or hollow cone-shaped insert which is mounted in the plate hole (2), at least partially abuts the inner wall (4) and is suitable for accommodating the head (21) of a bone screw (20), the insert (10) being arranged in the plate hole (2) such that it is secured against rotation and consisting of a material that has a hardness HE<Hp.

Abstract: A three-dimensional mini-plate with an oblique orientation for use in immobilizing fractures in facial bones such as the mandible. The plate's oblique orientation permits it to be better matched to oblique fractures such that its edges do not interfere with tooth roots or the inferior margin of the mandible.

Abstract: A spinal implant insertion tool includes a handle portion and an attachment portion extending distally from the handle portion. A first attachment section on the attachment portion is adapted to secure a surgically sterile spinal plate to the spinal implant insertion tool. A second attachment section on the attachment portion is adapted to secure a surgically sterile spinal cage, so that the spinal plate and the spinal cage may be attached to the spinal implant insertion tool simultaneously. The second attachment section is sized to allow the spinal plate to pass over the second attachment section before the spinal plate is secured to the first attachment section.

Abstract: The present invention provides a pedicle screw, which includes a screw head, a screw body, a screw rod and a screw cap. The screw body includes a ball-liked arc-shaped buckle portion and a column-liked thread portion. The screw head includes a semi-sphere part with an arc-shaped dimple on one end and a U-shaped cavity on the other end. The U-shaped cavity connects with the arc-shaped dimple. Furthermore, the Arc-shaped dimple connects with the arc-shaped buckle portion. The Arc-shaped dimple includes an opening on its top to allow the screw body passing through. The U-shaped cavity includes an opening, which includes a female thread to fix the screw rod in the U-shaped cavity by a male thread on the screw cap.

Abstract: An anterior cervical plate system is provided. The cervical plate includes a retention ring with a deflectable flange that is upwardly spaced from the top surface of the ring and configured to prevent an inserted bone fastener from backing out of the plate. The plate includes a locking pin having a camming surface and a blocking surface. When the camming surface is moved into position adjacent to the flange, the flange is free to flex out of the way of a bone screw being inserted into or removed from the plate. When the blocking surface is positioned adjacent to the flange, outward deflection of the flange is prevented to retain the bone screw inside the plate. The locking pin is rotated through a camming surface to bring a blocking surface against the flange deflecting the flange onto the head of the bone screw.

Abstract: A modular surgical instrument for knocking out or implanting a prosthesis that defines a prosthesis axis and which has a prosthesis neck includes a tool head with a passthrough for accommodating the prosthesis neck, a locking device for locking the mounted prosthesis neck, and a chuck, which has an axis for transferring a clamping force for the locking device. The passthrough and the chuck are arranged on opposite ends of the tool head relative to a lengthwise direction defined by the axis of the chuck, wherein the passthrough defines a passthrough axis which coincides substantially with the prosthesis neck axis when the prosthesis neck is locked in place. The axis of the chuck is at a distance from a plane defined by the lengthwise direction and the passthrough axis and/or is at a distance from a passthrough lengthwise axis that extends in the lengthwise direction and through the passthrough.

Abstract: According to one example, an adjustable cut guide for resecting a bone can include a base, a cam, an actuator, and an insert. The base can include a channel extending between a first end and a second end and a slot intersecting the channel. The cam can extend into the slot, and the cam can be coupled to the base within the slot to rotate between a first position and a second position. The actuator can be disposed in the slot, where the actuator can be translatable by rotation of the cam between an extended position when the cam is in the first position and a retracted position when the cam is in the second position. The insert can be disposed within the channel of the base and the insert can be secured relative to the base by the actuator when the actuator is in the extended position.

Abstract: Bone plates for engaging bone members are described herein. The bone plates can receive one or more screws to secure the bone plates to an underlying bone member. The one or more screws can be inserted into bone plate holes that can be considered locking or non-locking. The bone plates described herein can have particular combinations of locking and/or non-locking holes. In addition, instruments such as distal and proximal aiming guides can accompany the bone plates to guide one or more screws into the bone plates.