Abstract: The invention relates to an orthopedic implant system comprising an implant including a threaded aperture which receives either a first non-locking bone fastener or a second threaded variable axis locking fastener. The threaded aperture includes interruptions to form sections having a thread segment. The variable axis locking fastener has a threaded head configured to cause the threads to wedge against the female threads of the aperture as the fastener is tightened into the aperture in an off-axis orientation. In a further embodiment, the aperture includes a concentric annular groove to form flexible threaded tines.

Abstract: Devices, systems, and methods for bone stabilization, especially volar distal radius stabilization. The stabilization system may include a bone plate having an elongated portion, an enlarged head portion, and a transition region connecting the elongated portion to the enlarged head portion, and the plate including a plurality of through holes. A plurality of fasteners may be configured to extend through one or more of the plurality of through holes in the bone plate and into the bone. The plate may be used to stabilize a fracture in a long bone, such as a radius.

Abstract: An intra-osseous support structure can be used to fixate opposed portions of bone. In some examples, the intra-osseous support structure is positioned in openings formed in adjacent portions of bones. Fasteners are inserted through the bone portions to secure the intra-osseous support structure in the bones. Depending on the application, one or more external bone plates may also be applied to the bone portions. The external bone plate may be in compression while the intra-osseous support structure is in tension under load in situ.

Abstract: Surgical tools which are used to separate from one another a femoral cup and an acetabular ball in an implanted hip replacement prosthesis. At its distal end, elements of the surgical tool engage the femoral cup and the acetabular cup. When proximal handles of the tool are squeezed toward one another, the engagement elements move away from one another. Thus, a surgeon is able to separate the femoral cup and the acetabular ball from one another without pulling the acetabular cup away from the acetabulum or the femoral cup and/or femoral implant away from the femur, thereby accomplishing the separation without disrupting any bone ingrowth.

Abstract: A plate and an installation tool are provided for preventing a spinal facet joint implant from expulsing from its implant location between a superior and an inferior vertebra. A k-wire is used in cooperation with the plate and installation tool to guide them to the desired location. The plate includes a central threaded bore situated between one or two superior bone screw or bone connection barb bores and one or two inferior bone screw or bone connection barb bores. The installation tool includes a threaded plug at one end for receipt by the plate's central threaded bore for releasably holding the plate during installation. The installation tool has a superior structure and an inferior structure that can be a cannula or tang depending on the plate's form.

Abstract: A spinal fixation system includes an interbody and a plate. The interbody defines at least one locking aperture. The plate includes a front surface, a back surface, and at least one locking projection extending from the back surface. The at least one locking projection is removably engaged with the at least one locking aperture such that the plate is removably coupled to the interbody.

Abstract: A bone plate and one or more locking assemblies that help prevent screw backout without impinging on therapeutically valuable settling of the screws. In some cases, the locking assembly is configured to be attached to the plate, to be securely but efficiently locked, to be readily unlocked for revision surgery, and/or to reduce the possibility of operator error in installation by providing simplified visible and tactile indicia of the locked and unlocked positions.

Abstract: An augmented spanning fixation bone plate assembly combines an augmentation fixation bone plate with a spanning fixation bone plate. The augmentation fixation bone plate may be detachably attachable to the spanning fixation bone plate and may be slidably engaged with the spanning fixation bone plate to allow the augmentation fixation bone plate to be positioned for augmented fixation, wherein one or more separate bones are fixed with respect to the spanning fixation bone plate. An augmentation fixation bone plate may have one or more wings that extend laterally from the spanning fixation bone plate. An augmentation fixation bone plate may have two wings that extend in opposing lateral directions from the spanning fixation bone. A wing has a fastener aperture that may be slotted and may have an insert to enable directional fixation, wherein the fastener extends in an offset angle.

Abstract: A spine implant for use in spinal facet joint fixation or to connect distracted portions of a vertebral lamina in a laminoplasty through use or non-use of a spacer. One or two bone screw plates are angularly adjustable relative to a base plate for attachment by bone screws to vertebral bone. One form of the spine implant has a base plate, a first plate pivotally connected to the base plate for angular adjustment relative to the base plate and configured to hold one or two bone screws for attaching the first plate to first vertebral bone, and a second plate configured to hold two bone screws for attaching the second plate to second vertebral bone. The second plate may be pivotally connected to the body for angular adjustment of the second plate relative to the base plate or fixed to the base plate at a predetermined angle.

Abstract: A distal radius fixation plate for volar plating may comprise a distal radius fixation plate body configured to be placed adjacent a fractured volar distal radius and proximal to a watershed line of the volar distal radius and a distal radius fixation plate extension approximately 60 to 80% thinner on average than the distal radius fixation plate and projecting from the distal radius fixation plate body and configured to be placed so that it extends distal to the watershed line, the plate extension configured to curve around an ulnar/volar corner of the distal radius bone so as to engage the volar lip preferably without curving around other parts of the volar lip of the distal radius. The plate extension may have a hook at its upper end. The plate body may have an obliquely angled screw hole to buttress a radial styloid fragment.

Abstract: A spine stabilization device having an interbody spacer shaped to be inserted between a vertebral body of an upper vertebra and a vertebral body of a lower vertebra. The device further includes a fixation device to be inserted after placement of the interbody spacer, the fixation device having a support portion securing the interbody spacer against escaping from between the vertebral bodies into a ventral direction. The support portion rests against a portion of an anterior surface of the interbody spacer, and includes an anchor. The anchor has an anchoring material portion that is inserted, in a liquid state, into cancellous bone tissue of at least one of the vertebral bodies of the upper and lower vertebra, to thereby infiltrate the cancellous bone tissue, and to harden thereafter so as to fix the support portion to the vertebral body.

Abstract: Selectively placed implants are specifically configured and dimensioned to address pathologies of the shoulder joint arising from improper force distribution. By using appropriately sized and positioned implants as described herein, displacement of targeted connective and muscle tissues acting on the shoulder is accomplished in order to realign force vectors and/or alter moment arms loading the joint to achieve therapeutic effects without cutting bone and with minimal cutting of the connective tissues.

Abstract: A bicondylar knee implants with improved fixation means for resurfacing only the weight-bearing surface of the femoral medial and lateral condyles, while preserving the cruciate ligaments and avoids displacing the patella. The inventive device includes metallic convex articular surfaces for resurfacing the medial and lateral femoral condyles, and concave multifacial non-articular surfaces to be affixed to the resected distal surfaces of the femur. The prosthesis provides claws situated at the anterior and posterior ends of the medial and lateral metallic condyles, which will firmly attach the implant against the resected femoral condyle. The prosthesis is designed to be implanted through a direct lateral approach and does not resurface the femoropatellar joint. Furthermore, a minirobot or electromechanical actuator is used to perform the femoral and tibial bone cuts using electromagnetic bone chipper.

Abstract: A bone plate system and method for implanting the bone plate. The bone plate may include a head portion and a shaft portion, the shaft portion having a longitudinal axis and comprising a plurality of discrete aperture clusters. Each aperture cluster may include a non-threaded, non-locking bone fastener aperture configured to provide a polyaxial compressive construct and at least one threaded, locking bone fastener aperture. Once aligned with the bone, a first bone fastener is inserted into the bone through at least one of the non-threaded apertures in a direction normal to the longitudinal axis, compressing the bone along the longitudinal axis of the shaft portion of the bone plate. A second bone fastener is inserted into the bone through at least one of the threaded, locking bone fastener apertures in a direction oblique to the longitudinal axis and securing the bone plate to the bone.

Abstract: Apparatus and method for securely fixating an anterior portion of a calcaneus to a reduced posterior facet portion of the calcaneus, using a plate that may allow for stable fixation between the anterior calcaneus, the reconstructed posterior facet, and the posterior tuberosity, and a barrel that may be rotated into the best position to allow posterior screws to enter the best quality bone in the posterior tuberosity. The appropriate height may be set by rotating a push screw, thereby engaging the barrel, and pushing the posterior tuberosity distally.

Abstract: A system for bending an implant includes a drill guide extending longitudinally from a proximal end to a distal end, the drill guide including a distal portion having a first threading extending therealong to engage a threading along an interior of a bone fixation element receiving hole of an implant and a proximal portion having a second threading extending therealong and a bending pin extending longitudinally from a proximal end to a distal end including a recess extending proximally therefrom, the recess sized and shaped to receive the proximal portion of the drill guide and including a corresponding threading therealong for engaging the second threading.

Abstract: The invention relates to a plate fixed between two bone parts by way of screws engaged in holes formed in the thickness of said plate. The plate comprises an angled member or rib which is inclined according to an angle of between about 30° and 60° in relation to the plane defined by the plate. The angled member or rib has a hole for engaging a screw and is located in the central part of the width, over a determined part of the length of the plate, so that the screw brings the two bone parts into a compressive position.

Abstract: An apparatus can include a fibula plate having a shape such that, when placed on a fibula, includes a distal portion facing in a lateral direction and an upper portion wrapped around to a posted or aspect of the fibula, the fibula plate having screw holes positioned in the upper portion to direct screws anteromedially rather than directly medial.

Abstract: A compression screw comprising: a shaft capable of being stretched, the shaft having a proximal end and a distal end, the proximal end of the shaft comprising a bone-engaging feature and the distal end of the shaft comprising a distal screw thread, and the proximal end of the shaft comprising a drive feature for turning the shaft; wherein inserting the compression screw into bone across a fracture line generates a force, and wherein the force generates a stress in the shaft that causes the shaft to stretch to less than its elastic limit; and wherein, after the shaft is inserted into a bone, the shaft attempts to foreshorten to its original un-stretched condition, thereby generating and maintaining compression across the fracture line.

Abstract: A cervical plate and one or more locking assemblies that help prevent screw backout without impinging on therapeutically valuable settling of the screws. In some cases, the locking assembly is configured to be permanently attached to the plate, to be securely but efficiently locked, to be readily unlocked for revision surgery, and/or to reduce the possibility of operator error in installation by providing simplified visible and tactile indicia of the locked and unlocked positions.

Abstract: An improved posterior acetabular wall fracture buttress plate has a buttress plate having a pair of arms extending from a main plate. The main plate is pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface, the arms being 1.0 cm or less wide and bent lengthwise off horizontal about 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees. This is a stand-alone buttress plate intended to accomplish a buttress effect similar to previous art of 2-3 pelvic plates.

Abstract: Devices and methods for locking one or more bone screws to a fixation plate. A cam-style locking feature may be disposed in the fixation plate such that, when the locking feature is in a first position, the bone screw is able to traverse an opening in the fixation plate and engage adjacent bone; and when the locking feature is rotated into a second position, an interference between the locking feature and bone screw causes the bone screw to be firmly secured to the fixation plate.

Abstract: The present disclosure provides devices, systems and methods of bone fixation. The disclosed devices, systems and methods facilitate secure fixation of first and second bone segments, such as to promote fusion thereof. The devices may include at least one bone engagement projection extending from an engagement surface of a plate portion for implantation into the first bone segment. A portion of the plate portion spaced from the at least one bone engagement projection may include at least one bone fixation aperture. The least one bone fixation aperture may allow for a one bone engagement projection to be inserted therethrough and into the second bone segment to affix the plate portion to the second bone segment. In some embodiments, the at least one bone fixation aperture may be a compression slot.

Abstract: A general anatomic self-locking plate for medial acetabulum includes a left plate and a right plate mirrored with respect to the left plate. The right plate is a one-piece and includes a horizontal plate body and a vertical plate body. The horizontal plate body and the vertical plate body form a T shape. A through-hole is provided on the vertical plate body along a length direction thereof. Hole pathways of screw holes in the horizontal plate body lean downwardly along the free end of the horizontal plate body. The self-locking plate further includes stress bridges, automatic reduction holes and temporary positioning holes. An auxiliary apparatus of an anatomic self-locking plate for medial acetabulum includes a locking sleeve, a screw placing sleeve and a pair of gripping pliers. The right plate has excellent reduction and stable fixation, and is beneficial to accurately fix fractures without shaping and cutting during operation.

Abstract: A bone screw comprising a first end having an engagement contour for engaging with a tool to facilitate insertion or removal of the bone screw, and a blocking element is arranged at a second end thereof. The blocking element is provided with a circumferential outside surface which comprises at least one clamping surface which—when viewed in an azimuth plane perpendicular to a longitudinal axis of the bone screw—widens outwardly in a wedge-shaped manner away from the longitudinal axis. The bone plate includes at least one opening which is at least partially delimited by an inside wall having an inner contour for receiving and fixing the blocking element of the bone screw. At least one bone screw and at least one bone plate together form a surgical set.

Abstract: A method of expanding the spinal canal of a vertebra including inserting a bone anchor into a first lamina of the vertebra, cutting completely through the first lamina to create a space in the first lamina, cutting partially through a second, contra-lateral of the vertebra to create a partial cut in the second lamina, engaging a first segment of a plate with the bone anchor, pivoting the bone anchor and the first lamina about the partial cut in the second lamina to increase the extent of the space in the first lamina, and connecting a second segment of the plate to a portion of the vertebra across the space from the first segment of the plate such that the plate spans the space and stabilizes the vertebra.

Abstract: A spinal implant includes an intermediate portion and a first portion extending in a transverse orientation from the intermediate portion. The first portion includes an inner surface connectable with vertebral tissue adjacent a lamina. A second portion is spaced from the first portion and extends in a transverse orientation from the intermediate portion. The second portion includes an inner surface connectable with vertebral tissue adjacent a lamina. At least one of the first portion and the second portion includes an outer surface having a mating element engageable with a mating element of a surgical instrument. Systems, surgical instruments and methods are disclosed.

Abstract: A bone plate system for use in an “open door” laminoplasty procedure, including a bone plate, a first fixation element, and at least one second fixation element. The bone plate is elongated and has a generally curved shape such that the plate has an associated radius of curvature. The plate is sized and dimensioned to span a gap between a pair of bony segments, for example a pair of bony segments constituting a divided lamina. The first and second fixation elements are each configured to securely attach the bone plate to the bony segments. The bone plate has a first end including a generally U-shaped slot extending therein such that the open end of the slot comprises a first terminal end of the plate.

Abstract: The present invention is directed to a bone plate and its method of use for reducing a bone fracture, the bone plate having a longitudinal axis, the bone plate comprising an upper surface, a lower surface, a first hole for engaging a head of a first bone anchor. The first hole is configured and adapted to fix a shaft of the first bone anchor along a first axis. A second hole is spaced apart from the first hole along the longitudinal axis. The second hole is for engaging a head of a second bone anchor, and is configured and adapted to fix a shaft of the second bone anchor along a second axis. The first hole and the second hole are configured such that the first axis and the second axis define a single plane and intersect at a point below the lower surface. The shafts of the first and second bone anchors may touch or nearly touch at the point of intersection, such that the first and second bone anchors form a truss.

Abstract: Implant apparatus and methods are directed toward treating conditions involving the knee joint, and the patella specifically, maintain alignment or address misalignment of a patella through a full range of motion of the knee joint Exemplary devices include an elastomeric, Y-shaped device which is secured to the femur and patella on opposite ends thereof by bone anchors. The elastomeric device can be either rotatably or non-rotatably connected to the bone anchors.

Abstract: According to one example embodiment, a radius fixation plate includes a body portion configured to conform to a radius bone between a first extensor compartment and a second extensor compartment and dimensioned such that the body portion does not violate the first extensor compartment or the second extensor compartment. A first fixation device is configured to traverse through a first opening of the body portion and engage at least part of a radial styloid of the radius bone.

Abstract: A spinal construct adaptor comprising a member disposable between an inner surface of a bone fastener that defines an implant cavity and a spinal rod disposed with the implant cavity. A capture element is connected with the member and engageable with the spinal rod. Implants, spinal constructs, systems, instruments and methods are disclosed.

Abstract: An adhesively coupled power-meter measures one or more of force, torque, power, and velocity of a mechanical arm. The power meter includes a plate with a first surface prepared for adhesively coupling to the mechanical arm. At least one strain gauge is physically coupled with a second surface, opposite the first, of the plate and with an orientation corresponding to an orientation of the adhesively coupled power meter such that mechanical forces are transferred from mechanical arm to the at least one strain gauge when the plate is adhesively coupled to the mechanical arm. The power meter also includes electronics for receiving a signal from the at least one strain gauge and for determining one or more of force, torque, power and velocity from the signal, and a wireless transmitter for transmitting one or more of force, torque, power and velocity to a receiving device.

Abstract: Disclosed is a system and method for fusing two bones within a mammal. More particularly described is such a system and method for a transcortical fusion system wherein which a plate is affixed in a longitudinal slot or aperture cut into the anterior portion of the tibia and the talus, thereby achieving an fusion of the joint while placing the fusion site in the joint in compression.

Abstract: A plate for treating a bone includes a plate body extending along a longitudinal axis from a first end to a second end and being sized, shaped and contoured to be positioned along a desired surface of a bone. The plate also includes a slotted opening extending through the plate body and defined by a first portion sized and shaped to permit a head portion of a bone fixation element fixed to the bone to be passed therethrough and a second elongated portion extending along the longitudinal axis from the first portion in communication with the first portion, the second portion sized to prevent the head portion of the bone fixation element from being passed therethrough so that, when the head portion of the bone fixation element is received through the first portion, the plate is slidable relative thereto such that the second portion engages the head portion of the bone fixation element.

Abstract: An improved posterior acetabular wall fracture buttress plate has a buttress plate having a pair of arms extending from a main plate. The main plate is pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface, the arms being 1.0 cm or less wide and bent lengthwise off horizontal about 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees. This is a stand-alone buttress plate intended to accomplish a buttress effect similar to previous art of 2-3 pelvic plates.

Abstract: A bone anchor for limiting the separation of two bones, for example in a canine knee, comprises a head having a socket for engaging a tool and a shaft extending from the head to a tip. The shaft comprises a threaded section, an intermediate section located between the head and the threaded section and an aperture extending through the intermediate section. The head has a larger diameter than the intermediate section. Also disclosed is a kit of parts comprising two bone anchors and a looped suture and a method for limiting the separation of two parts.

Abstract: A volar distal radius plate includes a shaft and a head. The head includes a radial side that seats below the volar rim, and an ulnar side with two extending tabs that provide a buttress support to ulnar fragments from the volar rim. The tabs are contoured to be atraumatic to the overlying soft tissue. The tabs can be readily re-orientated to better approximate the volar rim and provide close support to the volar fragments. Each tab includes a single hole specifically sized to closely receive a K-wire in a fixed angle orientation, and which permits the K-wire to apply a bending load to a tab in situ to bend the tab about a lower recess between the tab and the remainder of the head. Therefore, the plate does not require a dedicated bender. The tabs can also accommodate sutures.

Abstract: A horizontal-transvertebral curvilinear nail-screw (HTCN) including a body portion having a first end and a second end, wherein the first end is opposed to the second end; and a head at the first end of the body portion, wherein the body portion has a predetermined curvilinear shape and includes a pointed tip at the second end of the body portion, and a method of surgically implanting universal horizontal-transvertebral curvilinear nail-screws (HTCN) into a plurality of adjacent vertebrae.

Abstract: The present invention relates to a fixing tool for an open-wedge high tibial osteotomy, and a fixing tool for an open-wedge high tibial osteotomy, which is installed on a tibia cut open due to a tibial osteotomy, includes: a fixing plate which includes a head portion that has a plurality of nut holes, and an elongated plate that has a plurality of nut holes and a long hole and is formed to protrude from one side of the head portion; screws which are coupled to the nut holes; and a block which is detachably installed in the long hole by using a fixing screw. Therefore, the fixing tool is closely fixed to a tibia, which has been cut open due to a procedure of a high tibial osteotomy, thereby enabling solid union of the tibia.

Abstract: Fusion devices include blade anchors. The blade anchors may slidingly penetrate a bone or bone fragment, and may induce compression of one bone to another or one fragment to another. The fusion devices may also include a body to which the blade anchors connect.

Abstract: A bone plate includes (a) a body having a first surface which, in an operative configuration, faces away from a bone on which the plate is to be mounted and a second surface, which in the operative configuration, faces the bone, the body including a first section extending along a first longitudinal axis and a second section extending along a second longitudinal axis angled with respect to the first longitudinal axis; (b) a first hole extending through the body from the first surface to the second surface and defining a first hole axis, the first hole being structured to lockingly engage a head of a first bone anchor inserted therein such that a shaft of the first bone anchor extends along the first hole axis; and (c) a second hole extending through the body and spaced apart from the first hole. The second hole defines a second hole axis and is structured to lockingly engage a head of a second bone anchor inserted therein such that a shaft of the second bone anchor extends along the second hole axis.

Abstract: The present application relates to adaptive surface surgical guiding apparatuses. A surgical guiding apparatus may include one or more rigid portions configured to attach to a first region of an underlying anatomical surface. The surgical guiding apparatus may further include a variable deformable portion coupled to the one or more rigid portions, the variable deformable portion configured to conform to a shape of a second region of the underlying anatomical surface to provide a stable attachment of the surgical guiding apparatus to the underlying anatomical surface. The present disclosure further provides methods for manufacturing surgical guiding apparatuses and uses of the apparatuses for placement onto an underlying anatomical surface.

Abstract: An apparatus can include a fibula plate having a shape such that, when placed on a fibula, includes a distal portion facing in a lateral direction and an upper portion wrapped around to a posterior aspect of the fibula, the fibula plate having screw holes positioned in the upper portion to direct screws anteromedially rather than directly medial.

Abstract: A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.

Abstract: A system and method facilitating replacement of comminuted bone fractures or portions thereof adjacent bone joints. The system and method employs a prosthesis to replace at least a portion of the comminuted bone fractures. The prosthesis serves in reproducing the articular surface of the portion or portions of the comminuted bone fractures that are replaced. In doing so, the prosthesis serves in restoring joint viability and corresponding articulation thereof.

Abstract: This disclosure relates to a cartilage prosthetic implant that can be used in orthopedics for a replacement of a damaged cartilage in a joint between opposing bones, for example in the case of osteoarthritis or trauma. The cartilage prosthetic implant described herein can replace the damaged cartilage at the joint without cutting bones of the joint. The cartilage prosthetic implant can maintain or restore a native joint anatomy, allowing for a natural movement at the joint. The cartilage prosthetic implant can be used as a permanent treatment or an intermediate treatment before requiring a total joint replacement. An example of the cartilage prosthetic implant is described for a knee joint replacement and is divided into a proximal implant configured to replace a cartilage at a distal end of a femur bone and a distal implant configured to replace a cartilage on a proximal end of a tibia bone.

Abstract: An intervertebral body spacer includes an inferior plate portion; a superior plate portion vertically spaced above the inferior plate portion; and a central spacer portion between the inferior plate portion. The central spacer portion has a posterior vertical wall extending between the inferior plate portion and the superior plate portion, the posterior vertical wall including multiple windows therethrough, an anterior vertical wall opposite and spaced apart from the posterior vertical wall, the anterior vertical wall being solid, and a pair of side vertical walls spaced apart from one another and extending between the posterior vertical wall and the anterior vertical wall, the side vertical walls including multiple windows.

Abstract: An apparatus and technique for internally securing a plurality of bone segments together. The device incorporates a plate-like structure stabilizing the fracture and integrated fasteners to attach fasteners circumscribing the bone segments.

Abstract: A bone plate is provided with: a strip-shaped main-body portion that is secured, along a longitudinal direction of a tibia, to an oblique anterior inner surface of the tibia below a cut formed in an inner surface of the tibia; a transverse portion that is secured to an inner surface of the tibia above the cut along a direction that intersects the longitudinal direction of the tibia; and a joining portion that joins the main-body portion and the transverse portion, wherein the transverse portion and the main-body portion are provided with a plurality of screw holes that are arrayed with spaces between each other and that pass therethrough in plate-thickness directions.