Abstract: A system and method for improving installation of a prosthesis, particularly an acetabular cup. The system and method may include implementation of a constant velocity relative motion between a prosthesis and an installation site. For example, an installation system may be fixed relative to the installation site, with the prosthesis fixed into an initial position. The prosthesis is moved at constant speed (i.e., with minimal if any acceleration or applied impulses) relative to the installation site. That is, one or both of the prosthesis or the installation site may be in motion. Resistive forces to installation of a prosthesis may thus be reduced by maintaining the prosthesis constantly in motion relative to the installation site. Securing a processing/implanting tool directly to the installation site may offer advantages.

Abstract: A bone plate for implanting in a femur bone having a prosthesis implanted therein includes a shaft portion defining a plurality of holes and a trochanteric portion proximal to the shaft portion having two arms forming a concave shape and defining a plurality of first holes for receiving screws such that when implanted, the two arms at least partially wrap around and attach to the femur bone. The bone plate may include at least one bendable extension positioned between both of the arms. Each of the extensions may define at least one second hole.

Abstract: A device for fixation of bone fragments (4, 8) comprises a locking plate (1) for fixation on the outside of an outer bone fragment (4). The locking plate has a distal portion (1 a) with at least one first hole (6), extending through the locking plate, for a distal fixing means (2) and a proximal portion (1 b) with a second hole (7), extending through the locking plate, for a proximal fixing means (3). The locking plate (1) is configured also with a third hole (9) which is located between said at least one first hole (6) in the distal portion (1 a) of the locking plate and said second hole (7) in the proximal portion (1 b) of the locking plate and this third hole extends as the other holes through the locking plate.

Abstract: Disclosed is a fixation device for sacroiliac joint stabilization. The fixation device includes an elongated body comprising a bone anchor at a distal end. An axially moveable proximal anchor is carried by the proximal end of the fixation device. In one embodiment, the device is inserted through the ilium of the pelvis and the bone anchor is rotated into position within the sacrum. The proximal anchor is distally advanced with respect to the bone anchor to provide compression across the sacroiliac joint.

Abstract: An intramedullary nail is suggested comprising a nail shaft with a lateral recess, with an expansion element being arranged in that recess, and an adjustment screw for adjusting the position and orientation of the expansion element relative to the nail shaft. A threaded bore may be formed in the nail shaft, wherein the threaded bore extends through the nail shaft and into the recess and is adapted to receive the adjustment screw.

Abstract: The low profile screw base comprises a screw base body and a positioning compression ring. An assembly hole penetrates longitudinally through the screw base body. A U-shaped slot for a connecting rod to pass through is provided on an upper portion of the screw base body. The inner wall of the screw base body on the opposite sides of the U-shaped slot is provided with internal threads. Snapping protrusions are formed on the inner wall of the screw base body on the opposite sides of the U-shaped slot below the internal threads. A lower ball socket matched with the round head of the ball screw is arranged in the assembly hole of the lower portion of the screw base body. The positioning compression ring used for compressing the round head is snap fitted above the lower ball socket and below the snapping protrusions (6).

Abstract: The present invention relates to a method for fixing an intramedullary cavity nail for the treatment of unstable trochanteric fractures and to a targeting device for use in performing the steps of said method. According to the method, a recess (16) for a femur neck screw (8) for fixing the cavity nail (2) is provided in at least the lateral cortex of the femoral shaft (FS) in close distal proximity to a hole (9) for the femur neck screw such that bone fragment(s) located distally of the fracture and bone fragment(s) located proximally of the fracture relatively seen can be displaced towards each other. A targeting head (5) of the targeting device (1) is configured with a targeting bore (14) which is alignable with a point on the femoral shaft (FS) in close distal proximity to the hole (9) for the femur neck screw (8) for use in providing at said point, said recess (16) for the femur neck screw.

Abstract: A modular bone plate is provided including at least a first and a second member each having a top surface and a bottom surface, the first member comprising a male connection portion with a single hole extending from the top surface to the bottom surface and the second member comprising a female connection portion with a single hole extending from the top surface to the bottom surface, wherein the male connection portion is insertable into the female connection portion such that the holes overlap and wherein an anchor or a plug member is insertable into the holes when they overlap.

Abstract: A fixation device for treating an epiphyseal fracture, comprises a shaft extending longitudinally along a central axis from a first end to a second end configured to slidably engage a bone implant opening and a having a maximum radius r and a spherical head element attached to the first end of the shaft and having a radius R>r, the spherical head element configured to be inserted into a fragmented portion of bone such that the fragmented portion rotates about the spherical head element relative to the central axis of the shaft.

Abstract: A spinal fixation aiming apparatus includes a spinal fixation aiming device, a first adjustment unit, a second adjustment unit, and an extendible/retractable bar. The spinal fixation aiming device includes an arc guide rail, an arc slide unit, and a tool holder that is movable to and selectively fixed at a predetermined position. The arc guide rail, the arc slide unit, and the tool holder are each made of a light-transmitting materials. To use, the extendible/retractable bar is attached to an operation table and adjustment is made with the first adjustment unit, the second adjustment unit, and the extendible/retractable bar for setting a position of the spinal fixation aiming device to an angle and a height according to the patient. Further, according to the need of the surgical operation, a collaborative operation of the arc guide rail and the arc slide unit can be conducted for angular adjustment.

Abstract: The present disclosure describes various embodiments of a plate and guide that enable fixation of a fractured bone while reducing damage to tissue in the vicinity of the fractured bone. The plate may be sized and dimensioned such that the plate may be slid underneath a muscle or other tissue and positioned into a proper location for providing fixation of the plate to the fractured bone without requiring cutting of the muscle or other tissue. The guide may be sized and dimensioned to interface with the plate such that the guide is place over the top of the muscle or other tissue, thereby enabling the guide to be used for providing screws or other devices (e.g., rods, K-wires, etc.) to the plate in a proper orientation to provide fixation to the fractured bone without requiring cutting of the muscle or other tissue.

Abstract: A member of a modular bone plate is provided, the member comprising a top surface defining a top plane; a bottom surface defining a bottom plane; a connection portion including a hole with a center axis that intersects the top plane and the bottom plane; wherein a first portion of the edge of the hole is provided with a projection forming a first free end of the member and wherein a second portion of the edge of the hole is provided with a groove that is configured to accommodate a projection of a connection portion of a second member of the modular bone plate. Furthermore, a modular bone plate having at least two such members is provided.

Abstract: A device for implanting a bone fixation system comprises an insertion instrument extending from a proximal end to a distal end, the distal end having an engagement portion for removably engaging a proximal end of a bone plate, the insertion instrument having an elongated channel extending therethrough to permit insertion of a first protection sleeve therethrough, wherein a longitudinal axis of the elongated channel is coaxial with a longitudinal axis of a first opening extending through the bone plate and a first protection sleeve insertable into the elongated channel and guiding insertion of an anti-rotation screw therethrough and through the bone plate, a longitudinal axis of the first protection sleeve being angled with respect to the longitudinal axis of the elongated channel.

Abstract: Examples of devices and methods for stabilizing a fracture in a bone include a body having an elongate distal portion having an outer surface defining a screw thread and an elongate proximal portion having a non-threaded outer surface.

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: A bone fastener comprises a first member defining an implant cavity. A first part is disposed with the implant cavity and engageable with an implant. A second member is configured to penetrate tissue and includes a mating surface engageable with the first member such that the members are expandable. Implants, spinal constructs, systems, instruments and methods are disclosed.

Abstract: A spinal fixation system comprising at least one fastener having a fastener head at a proximal end and at least one body. The body comprises a rod receiving channel for receiving a fixation rod, a pressure cap for engaging the fastener head, and a fastener head receiving chamber for retaining the fastener head within the body. The fastener head receiving chamber allows for multi-axial movement of the body in relation to the fastener when the pressure cap is disengaged from the fastener head. The body is secured in a mono-axial position in relation to the fastener when the pressure cap is biased against the fastener head.

Abstract: A bone plate assembly is provided including a plate member with a top side (1a) and a bottom side (1b), at least one hole (2) extending from the top side (1a) to the bottom side (1b), an insert (3) arranged in the hole, the insert having a through hole (31), a guide member (4) removably arranged in the through hole of the insert, the guide member having a guide channel (40) and an outer surface portion (41) which engages an inner wall portion (32) of the through hole (31) to allow a pivoting movement of the guide member within the insert.

Abstract: Disclosed is a combined intramedullary and extramedullary bone stabilization and alignment system, which includes both methods and apparatuses for the alignment and stabilization of a first bone or piece of bone to a second bone or piece of bone. Embodiments of the system may include an implant device which has an elongated framework within intramedullary portion and an extramedullary portion which are cannulated. The cannulated aspect of the framework includes a wire aperture through both the intramedullary portion and the extramedullary portion.

Abstract: An interchangeable orthopedic blade including an internal portion and an external portion. The internal portion more accurately places the interchangeable orthopedic blade in, without excessive damage to, a bone when repairing a fracture in the bone and ultimately provide absolute stable fixation by the interchangeable orthopedic blade holding the fracture in its anatomic position and resisting applied forces while healing, to thereby provide a stable anatomic restoration and eliminate a need for revision surgery due to failure of fixation or malunion. The internal portion is received in the external portion and rotates relative to the external portion, but has the external portion move non-rotatably axially with the internal portion into the bone as the internal portion threads. In a first preferred embodiment, the internal portion is a screw with an externally threaded head. In a second preferred embodiment, the internal portion is an externally threaded set screw.

Abstract: Examples of devices and methods for stabilizing a fracture in a bone include a body having an elongate distal portion having an outer surface defining a screw thread and an elongate proximal portion having a non-threaded outer surface. In one example, a passage is formed through the proximal portion transverse to the longitudinal axis from a first opening on the surface of the proximal portion to a second opening on the surface of the proximal portion.

Abstract: Intramedullary systems, expandable intramedullary nails, expandable anchors, and methods of using the same. The intramedullary system may include an expandable intramedullary nail configured to extend into an intramedullary canal of a long bone and/or one or more expandable anchors configured to extend at an angle transverse to the intramedullary nail. The intramedullary nails and/or anchors may include one or more integrated expansion mechanisms that allow for insertion in a contracted configuration and expansion into a deployed configuration to lock the relative position and prevent axial rotation and translation of the system.

Abstract: The invention relates to a surgical locking screw for fastening bone parts in the event of a heel fracture, comprising a front end, a rear driving end having a drive for turning the locking screw, and an external thread, which has a constant thread pitch continuously over the axial extent of the external thread, wherein a major diameter of the external thread is constant in a first axial segment of the locking screw and increases with increasing distance from the front end in a second axial segment adjacent to the first axial segment in the direction of the rear end, wherein a minor diameter of the external thread is constant in the first and second axial segments, wherein the external thread extends, at least approximately, axially continuously over the entire axial extent of the locking screw, and wherein the minor diameter of the external thread extends over the entire axial extent of the external thread.

Abstract: A member of a modular bone plate is provided, the member comprising a top surface defining a top plane; a bottom surface defining a bottom plane; a connection portion including a hole with a center axis that intersects the top plane and the bottom plane; wherein a first portion of the edge of the hole is provided with a projection forming a first free end of the member and wherein a second portion of the edge of the hole is provided with a groove that is configured to accommodate a projection of a connection portion of a second member of the modular bone plate. Furthermore, a modular bone plate having at least two such members is provided.

Abstract: Pathology of the human knee can arise from excessive and/or uneven loading of regions within the joint. Methods and apparatus are disclosed that enable displacement of soft tissue around the knee, without displacing or severing bone thereby altering the mechanical load distribution within the joint in a less invasive manner than previous techniques.

Abstract: A drill guide assembly according to an exemplary aspect of the present disclosure includes, among other things, a drill sleeve and an alignment bar spaced from the drill sleeve. A positioning of the drill sleeve is linked to a positioning of the alignment bar.

Abstract: Apparatus for use in debriding a bone, said apparatus comprising: an arthroscopic debridement template comprising a body reconfigurable between (i) a first configuration having a first profile and comprising an arc matching the desired curvature of the bone after debridement, and (ii) a second configuration having a second profile, wherein said second profile is smaller than said first profile.

Abstract: Intramedullary systems, expandable intramedullary nails, expandable anchors, and methods of using the same. The intramedullary system may include an expandable intramedullary nail configured to extend into an intramedullary canal of a long bone and/or one or more expandable anchors configured to extend at an angle transverse to the intramedullary nail. The intramedullary nails and/or anchors may include one or more integrated expansion mechanisms that allow for insertion in a contracted configuration and expansion into a deployed configuration to lock the relative position and prevent axial rotation and translation of the system.

Abstract: Provided are a lesser trochanter securing device and an artificial joint device. The device includes a basket portion which covers a lesser trochanter, and a buttress plating portion which is joined to a lower edge of the basket portion, extends toward a femoral shaft and is secured and joined to the femoral shaft.

Abstract: A dual reconstructive wire system for use with an anatomy can include a first guide wire, a second guide wire, a first guide instrument, a first cannulated insertion instrument, and a second cannulated insertion instrument. The first guide wire can pass through the first cannulated insertion instrument such that a first end and a second end of the first guide wire extends beyond the first end and the second end, respectively of the first cannulated insertion instrument. The second guide wire can pass through the second cannulation insertion instrument such that a first end and a second end of the second guide wire extends beyond the first end and the second end, respectively of the second cannulated insertion instrument.

Abstract: A bone fixation system comprises an elongated implant shaft extending from a proximal end to a distal end along a central longitudinal axis and including a first channel extending from the proximal end to a side opening formed in a side wall of the implant shaft along a first channel axis. The bone fixation system further comprises a bone plate having a first plate portion and a second plate portion, the first plate portion having a first opening extending therethrough along a first opening axis and the second plate portion having a second opening extending therethrough along a second opening axis, the second opening being configured to receive the implant shaft therethrough to permit insertion thereof into a head of a bone.

Abstract: A bone fixation plate for fixation of fractures having a small terminal bone fragment, such as fractures of the lateral malleolus. The bone fixation plate includes an elongated body, and two hook members extending from a first end of the elongated body. Each hook member curves back upon a bottom surface of the elongated body, back towards a second end of the elongated body, and terminating in a pointed prong region. The elongated body includes a first region, a second region, and an angled region disposed between the first and second region. The prong region has a longitudinal axis that is substantially parallel to a longitudinal axis of the angled region of the elongated body of the bone plate.

Abstract: A suture guide may include a base, a tissue guard extending from the base, and two flanking posts affixed to the base on opposite sides of the tissue guard. The posts may extend from the base in parallel planes, and each of the posts may define a plurality of channels passing through its width. The channels may be so oriented that, for each post (a) the channels define suture needle guide paths in one or more planes, and (b) at least one channel is not perpendicular to a long axis of the first flanking post, so that it defines an oblique suture needle guide path. The tissue guard may be connected to the base by a connector so adjustable as to control spacing between the posts and the tissue guard.

Abstract: A bone end (epiphysis) fracture device including a rotatable fixation plate having a guide pin aperture and a plurality of fixation screw apertures formed therethrough. The guide pin aperture is used by a surgeon to position the fixation plate so that one or more fixation screw apertures are properly positioned to receive fixation screws inserted by the surgeon for repairing a bone end fracture. In another embodiment, the fracture fixation device also includes a side plate to which the fixation plate is rotatably attached. This embodiment further includes one or more side plate apertures formed through an elongate extension, whereby the fixation device may also be attached to the bone for which an end fracture is being repaired. A lock screw is provided in this embodiment for locking the position of the fixation plate with respect to the side plate.

Abstract: A bone anchoring nail is provided having a threadless shaft with a free end, a head opposite to the free end, the head having a substantially U-shaped recess for accommodation of a rod or a rod-shaped element, a longitudinal bore extending through the shaft and opening towards any one of the head and the free end and a plurality of openings extending through the wall of the shaft and being in communication with the bore. The bone anchoring nail allows quick insertion and reliable fixation enhanced by the in-growth of blood vessels.

Abstract: System, including methods, devices, and kits, for hip fixation. The system may include a fixation element configured to be placed obliquely into a proximal femur and anchored in a head of the proximal femur. The system also may include a plate member including (a) a mounting portion configured to be placed on and attached to a lateral cortex of the proximal femur and (b) a barrel portion configured to be placed into a lateral region of the proximal femur and positioned around a portion of the fixation element. The system further may include a compliant member positioned or positionable at least partially in the plate member and configured to be reversibly deformed in response to a load applied to the head of the proximal femur, to change an angular orientation of the fixation element with respect to the plate member.

Abstract: The present invention relates to an apparatus for the strictly limited flexible stabilization of long bone fractures, said apparatus incorporating a stabilization element configured to be a helical rod that may be introduced into the cavity of a long bone and that comprises a fixation device at one end at least. In accordance with the invention there is provided that the helical rod comprises, beside a very high vertical spring rate, a bending spring rate that is reduced to the “physiological” level as compared to a marrow nail so that, once placed in the bone, minimal healing-promoting movements are being stimulated. It is further preferred that the helical rod has a normalized, uniformly configured head that is independent of the variable outer diameter of the helical rod, which is adapted to the respective bone.

Abstract: System, including methods, devices, and kits, for hip fixation. The system may include a support member defining an aperture and including an intramedullary nail for a proximal femur or a plate member for a proximal femur. The system also may include a fixation element having a compliant region and configured to be received in the aperture of the support member such that the fixation element extends out of the support member from the aperture and into a head of the proximal femur and is slideable with respect to the support member along a long axis defined by the fixation element. The system further may include a set of stiffening inserts each insertable into the fixation element and configured to stiffen the compliant region differently from one another.

Abstract: Disclosed is a fracture fixation device, for reducing and compressing fractures in a bone. The fixation device includes an elongate body. An axially moveable proximal anchor is carried by the proximal end of the fixation device and comprises a tubular sleeve that includes a plurality of graduations positioned on an outer surface of the tubular sleeve. The device is rotated into position across the femoral neck and into the femoral head, and the proximal anchor is distally advanced to lock the device into place. In certain embodiments, the elongated body includes a distal anchor with a distal cutting tip.

Abstract: A system is disclosed for repairing and reconstructing a joint which has been injured by trauma, and especially an acromioclavicular joint. Means are disclosed to strengthen the repair or reconstruction and to maintain alignment while the ligaments in the joint heal, thus allowing more aggressive rehabilitation. A new joint repair tool is disclosed which is inserted into two separated bones adjacent to their respective articular joint surfaces to connect the two bones and approximate the adjacent bearing articular joint surfaces while still allowing motion between the two bones. Instruments to perform the methods are also disclosed.

Abstract: The present invention relates to a device for fixation of bone fragments at bone fractures. The device comprises at least two fixation means (5, 6) and a securing plate (4). With the object of preventing or counteracting re-dislocation, the respective fixation means (5, 6) each have a first fixing portion (19) for fixing the fixation gleans in an inner bone fragment (3), a second fixing portion (21) for locking the fixation means to the securing plate (4) which is disposed on the outside of an outer bone fragment (2) and allows movement of the outer bone fragment relative to it, so that the fixation means are prevented from changing their angular position relative to the securing plate and relative to one another, and a middle portion (22) which is situated between the fixing portions and runs through the outer bone fragment, along which middle portion the outer bone fragment can slide inwards towards the inner bone fragment in which the fixation means is fixed.

Abstract: A hip fracture support plate, in combination with hip screw fixation of an intertrochanteric hip fracture, provides additional support of the femoral head and neck fragment, tending to reduce hip screw cut-out or fracture, with collapse and mal-union of the head and neck.

Abstract: A rear-retaining structure for dynamic hip screw (DHS) includes a retaining block and a positioning element. The dynamic hip screw comprises a lag screw, a sideplate, a sleeve with a higher orifice and a lower orifice, and a compression screw. The retaining block of the rear-retaining structure is attached to the sideplate of the dynamic hip screw by the positioning element. A stopper portion of the retaining block is located opposite to the lower orifice of the sleeve. The height of the highest point of the stopper portion in the lower orifice is in inverse proportion to the distance that the lag screw and the compression screw are allowed to slip back in the sleeve from an implant position to the lower orifice; namely, the higher the height of the highest point of the stopper portion is in the lower orifice, the smaller the distance for the slip back.

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: Methods and devices are provided for passively locking a bone screw within a bone plate. In particular, the methods and devices allow a bone screw to be locked within a thru-hole in a bone plate without requiring any additional locking steps. In an exemplary embodiment, an annular feature is provided in a thru-hole of a bone plate, or in a bushing that is disposed within a thru-hole of a bone plate, for engaging a bone screw. The annular feature can be configured such that it allows the bone screw to be inserted through the thru-hole at various insertion angles while still being effective to prevent back-out of the bone screw, thereby locking the screw to the plate.

Abstract: A device for implanting a bone fixation system comprises an insertion instrument extending from a proximal end to a distal end, the distal end having an engagement portion for removably engaging a proximal end of a bone plate, the insertion instrument having an elongated channel extending therethrough to permit insertion of a first protection sleeve therethrough, wherein a longitudinal axis of the elongated channel is coaxial with a longitudinal axis of a first opening extending through the bone plate and a first protection sleeve insertable into the elongated channel and guiding insertion of an anti-rotation screw therethrough and through the bone plate, a longitudinal axis of the first protection sleeve being angled with respect to the longitudinal axis of the elongated channel.

Abstract: A device for bone fixation defining at least one through hole extending therethrough, the through hole including first and second through apertures separated from one another by a first resilient element deformable radially outward from the first aperture to expand the first aperture and contract the second aperture, the second aperture being sized and shaped to receive therein a bone fixation element, the second through aperture being smaller in size than the first through aperture, a periphery of the first through aperture comprising at least two substantially circular arcs B1 and B2 with respective radii R1 and R2 and respective centers Z1 and Z2 located at a distance X?0 extending transversely to the resilient element whereby the ratio R1:R2 is in the range between 0.5 and 2.0.

Abstract: Internal pedicle insulator apparatuses and methods are provided. A representative method includes: providing an internal pedicle insulator implant; inserting the implant into a pedicle such that the implant is positioned between a nerve and material that is to be applied in a vicinity of the nerve; applying the material in the vicinity of the nerve; and using the implant to prevent the material from contacting the nerve.

Abstract: The present disclosure relates to a fixation device. The fixation device includes a base portion having a first leg, a second leg, and a groove located between the first and second legs, and a top portion extending from the base portion. A method of tissue repair and a kit are also disclosed.

Abstract: A multi-axial screw assembly comprises a receiver, a base member, and a crown. The receiver comprises a channel for receiving a rod and an aperture extending from a bottom portion of the receiver. The base member comprises an aperture extending through the base member and an opening on a bottom portion of the base member. The base member is configured to couple to the receiver such that the aperture of the receiver is generally aligned with the aperture of the base member. The base member is rotatable relative to the receiver. The crown is received in the receiver and configured to mate to the base member. The crown has a mating feature configured to couple to the base member such that the crown rotates the base member when the crown is rotated.