Abstract: A connecting member insertable, at a fracture, inside a bone structure of a human or animal body to immobilize at least two bone portions. The connecting member has at least one radioactive source located at a predetermined reference point.

Abstract: An intramedullary nail has a posterior side, an anterior side, a proximal portion and a distal portion is described. A transverse bore is arranged in the proximal portion and is configured to receive a bone engagement member. The transverse bore includes at least two recesses formed at an inner wall of the transverse bore, wherein one recess is arranged on the posterior side and the other recess is arranged on the anterior side of the transverse bore of the intramedullary nail.

Abstract: An implant system for use in orthopaedic surgery for fixation of bone includes an intramedullary nail and a coupling unit. The intramedullary nail has a proximal portion defining a longitudinal axis and a transverse bore. The proximal portion includes a bore defining a first axis and a guiding structure defining a second axis, wherein the first axis and the second axis are substantially parallel to the longitudinal axis of the proximal portion of the intramedullary nail and are spaced apart from each other. The coupling unit is movably arranged within the proximal portion and includes a substantially cylindrical pin and a drive member with a through hole. The guiding structure is configured to slidably receive the substantially cylindrical pin, such that the pin can engage within a groove of a bone fastener configured to penetrate the transverse bore of the intramedullary nail.

Abstract: Locking nail system for arthrodesis reconstruction of calcaneus fractures which includes a nail, several calcaneus-talar screws, and a guide. The system is usable for the reconstruction of severe comminuted fractures of the calcaneus in humans and fixation of this bone after reconstructing its principal form, to the talus, in order to attain arthrodesis or fusion with the latter. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: An intramedullary nail for use in a medullary canal of a long bone is provided. The nail includes a body defining a longitudinal axis of the body and an external periphery of the body for fitting in the medullary canal of the long bone. The body has a first internal wall thereof defining a first opening through the body. The first opening defines a first opening centerline. The body has a second internal wall of the body defining a second opening through the body. The second opening defines a second opening centerline. The first opening centerline and the second opening centerline are oblique with respect to each other. The longitudinal axis of the body and the first opening centerline form an acute angle between the longitudinal axis of the body and the first opening centerline. The longitudinal axis of the body and the second opening centerline forming an acute angle between the longitudinal axis of the body and the second opening centerline.

Abstract: An intramedullary nail comprising an outer tubular sheath, a flexible rod and a driver element mobile within the sheath longitudinally with an engagement element formed out of the wall of the tubular sheath. After the nail has been inserted, distal end first, into the intramedullary cavity, the flexible rod is pulled, thereby engendering the driver element to advance the engagement element into the cortical bone, thus keeping the intramedullary nail in position within the intramedullary cavity.

Abstract: An implant for osteosynthesis, for example a bone nail, has an implant body which has at least one bore with a threaded portion and a bone screw which engages the thread when it is threaded into a bone for the fixation of the implant body. The threaded bore has an annular groove the diameter of which is larger than the thread outer diameter, and which receives a ring of a deformable material with an inner diameter which is smaller than the outer diameter of the thread of the bone screw so that the ring extends partially into the bore.

Abstract: A straight intramedullary bone fracture fixation device is provided with an elongate body having a longitudinal axis for deployment in a long bone, such as a clavicle. Methods of repairing a fracture of a bone are also disclosed. One such method comprises inserting a bone fixation device into an intramedullary space of the bone to place at least a portion of an elongate body of the fixation device on one side of the fracture and at least a portion of a hub on another side of the fracture, and engaging an inner surface of the intramedullary space to anchor the fixation device to the bone. Various configurations and designs may be used in combination with other fixation device components.

Abstract: A bone fixation device includes a rod including a first portion extending from a proximal side of the rod, and a second portion extending from the first portion, wherein the rod is inserted into a medullary canal of an ulna bone, the first portion includes a plurality of longitudinally displaced screw holes, having axes whereby at least two screws inserted into the screw holes extend in discrete directions into a metaphyseal portion of the ulna. The bone fixation device also includes a curved extension portion extending from the proximal side of the rod to capture an olecranon of the ulna. The device provides the benefits of an intramedullary nail and proximal tension band type fixation in a single device. The fixation device permits a minimally invasive treatment of proximal ulna fractures that may otherwise be under treated.

Abstract: Intramedullary rod and blade assemblies and methods of implanting said assemblies are disclosed herein. The assemblies provided herein are useful in treating distal, proximal fractures, among other conditions, in large bones including, but not limited to: femurs, tibias, and humeri. Preferred assemblies can include an intramedullary rod having a proximal end and coupling means configured to securely attach to a blade, such that no portion of the rod or the coupling means extend into the fractured fragment beyond the blade. Further preferred assemblies include intramedullary rods that connect in the center of the internal blade, or substantially so, such that the rod and blade form a “T-shape,” or substantially so.

Abstract: Intramedullary fixation assemblies (4, 8) and intramedullary fixation devices (1, 24) can be used in orthopaedic surgery for the fixation of bone fractures. Also disclosed is an insertion device (30) for inserting an intramedullary fixation device, and a method of fixing a bone fracture. The fixation devices are preferably for addressing fractures of the distal radius, and are preferably styloid nails. The styloid nails preferably have a head portion that can accept up to three bone screws; one of the bone screws is designed to extend across a fracture line between a proximal and a distal bone fragment while the other bone screws are designed to be retained in the distal bone fragment.

Abstract: A surgical nail for treating a fractured bone includes a nail body extending along a longitudinal axis from a trailing end to a leading end and including a trailing end locking aperture extending transversely through a trailing end portion thereof and a leading end locking aperture extending transversely through a leading end portion thereof; a trailing end connecting element located at the trailing end of the nail body adapted and configured to be coupled to a trailing end aiming guide; and a leading end connecting element at the leading end of the nail body adapted and configured to be coupled to a leading end aiming guide.

Abstract: An implant system for use in orthopaedic surgery for fixation of bone includes an intramedullary nail and a coupling unit. The intramedullary nail has a medial side, a lateral side and a proximal portion defining a longitudinal axis. The proximal portion includes a bore defining a first axis substantially parallel to the longitudinal axis of the proximal portion and a transverse bore configured to receive a bone fastener. The coupling unit is movably arranged within the bore of the proximal portion and includes one or more bone fastener engagement members at one or both of the lateral side and the medial side of the intramedullary nail.

Abstract: An anchor-in-anchor fixation system is provided for securing underlying structure, such as bone. The fixation system includes a first bone anchor having a shaft for fixation to underlying bone, and a head that defines an internal bore. A second bone anchor extends through the bore and into underlying bone. A fixation assembly is also provided that includes one or more fixation systems coupled to an auxiliary attachment member configured for long bone fixation, spinal fixation, or fixation of other bones as desired.

Abstract: This invention relates generally to devices, systems and methods for the internal fixation of bone fractures, and particularly, to intramedullary fracture fixation devices such as those used in, for example, the treatment of long bone fractures. An IM rod preferably is provided with multiple curved sections in different planes preferably designed to conform with the long bones of a patient, both during insertion and in the rod's final position in the long bone. In addition, the overlap of portions of the curved sections results in a co-planar curvature of portions of the IM rod which assist in the insertion process by guiding the proper rotation of the IM rod as it is inserted into the bone. Spiraling flutes extending down the distal portion of the rod also assist in properly guiding and orienting the rod about its longitudinal axis during insertion such that the appropriate segment of the curved rod conforms with the appropriate portion of the long bone at the appropriate place.

Abstract: Systems, devices and methods are disclosed for treating fractures. The systems, devices and methods may include one or both of an implant, such as an intramedullary nail, and a fastening assembly, such as a lag screw and compression screw assembly. The implant in some embodiments has a proximal section with a transverse aperture and a cross-section that may be shaped to more accurately conform to the anatomical shape of cortical bone and to provide additional strength and robustness in its lateral portions, preferably without requiring significant additional material. The fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the implant. In some embodiments, the engaging member and the compression device are configured so that the compression device interacts with a portion of the implant and a portion of the engaging member to enable controlled movement between the first and second bone fragments.

Abstract: A method and apparatus for forming any size antibiotic impregnated bone cement (AIBC) intramedullary (IM) nail. The cement nail is formed around a base support or base IM nail. The apparatus includes a molded plastic tube device to form the shape of the cement IM nail and plastic spacers which position the molded plastic tube around the base support or base IM nail for formation of the cement nail. The AIBC material may be any of the known antibiotic loaded/impregnated bone cements that are commercially available.

Abstract: An implantable fixation system for fusing a joint between a first bone and a second bone. The system may include an intramedullary nail and an anchor. The intramedullary nail may include a standoff and a compression bolt. The system may be implanted across the joint along an intramedullary trajectory. The length of the system may be adjustable to provide compressive force between the anchor and the compression bolt. The system may be implanted across a tibiotalar joint with the anchor positioned in the sinus tarsi. A spacing member may be inserted between the two bones and the fixation system implanted to extend through an opening in the spacing member. The spacing member may be anatomically shaped and/or provide deformity correction. An ankle arthroplasty system may include a tibial plate, a talar plate, and a bearing insert. The plates may be anchored to the tibia and talus along a single trajectory. The ankle arthroplasty system may be revisable to a fusion system.

Abstract: A bone fastener for use in orthopaedic surgery for anchoring an intramedullary nail to bone has a shaft with a front region and a rear region adjacent to the front region. The rear region has one or more explantation grooves helically arranged for facilitating the explantation of the bone fastener. Two axially spaced apart grooves or groove sections are separated by a flat shaft portion defining an outside diameter of the rear region, wherein the rear region has a core diameter greater than a core diameter of the front region.

Abstract: An anchor-in-anchor fixation system is provided for securing underlying structure, such as bone. The fixation system includes a first bone anchor having a shaft for fixation to underlying bone, and a head that defines an internal bore. A second bone anchor extends through the bore and into underlying bone. A fixation assembly is also provided that includes one or more fixation systems coupled to an auxiliary attachment member configured for long bone fixation, spinal fixation, or fixation of other bones as desired.

Abstract: An intraosseous device is disclosed that can be positioned to straddle a bone fracture to stabilize the fracture and provide structural support for the bone and the surrounding areas. The device includes wire assemblies that are deployable on each side of the fracture to anchor the device within the bone. For the device, an elongated tube is formed with a plurality of slots at each tube end. A central member is mounted inside the tube and moveable members are positioned inside the tube, one at each tube end. Wires connect the moveable members to the central member. A rod cooperates with each moveable member and is rotatable to draw each moveable member inwardly toward the central member. This forces each wire to bow and displace a central wire portion through a corresponding slot and into contact with the bone's inner wall to anchor the device in the bone.

Abstract: An intramedullary fixation device having a distal section; a proximal section; a connecting member for adjustably securing the distal and proximal sections end to end along a longitudinal axis; means for securing the proximal section to a first bone; and means for securing the distal section to a least one different bone. The connecting member is rotated to provide compression across a bone arthrodesis site to be stabilized and fused. Also described is a method of utilizing the intramedullary fixation device with an outrigger assembly.

Abstract: An intramedullary device includes an intramedullary nail extending along a longitudinal axis from a proximal end to a distal end, a proximal portion of the intramedullary nail including a cavity extending from an opening at the proximal end along the longitudinal axis and a locking hole extending transversely therethrough along with a first insert sized and shaped for insertion into the cavity along the longitudinal axis thereof and including a transverse bore aligning with the locking hole.

Abstract: An intramedullary rod for use in the treatment of long bone fractures includes an elongated rod extending along a longitudinal axis and including a head and a stem, at least a first transverse hole extending through the rod and a plurality of external spiral flutes located along at least a portion of the stem, wherein the elongated rod includes at least two bends along the longitudinal axis in a first plane and at least one bend along the longitudinal axis in a second plane.

Abstract: A bone fixation device is provided with an elongate body having a longitudinal axis and having a first state in which at least a portion of the body is flexible and a second state in which the body is generally rigid, an actuateable gripper disposed at one or more locations on the elongated body, a hub located on a proximal end of the elongated body, and an actuator operably connected to the gripper(s) to deploy the gripper(s) from a retracted configuration to an expanded configuration. Methods of repairing a fracture of a bone are also disclosed. One such method comprises inserting a bone fixation device into an intramedullary space of the bone to place at least a portion of an elongate body of the fixation device in a flexible state on one side of the fracture and at least a portion of a hub on another side of the fracture, and operating an actuator to deploy at least one gripper of the fixation device to engage an inner surface of the intramedullary space to anchor the fixation device to the bone.

Abstract: An ankle fusion device has a proximal portion generally aligned with a first longitudinal axis. The proximal portion includes a proximal end and a first fastener hole. The proximal portion has an arcuate curve such that the proximal end is spaced a distance from the first longitudinal axis in a first direction. The first fastener hole is configured to receive a first fastener along a first fastener axis. A distal portion of the ankle fusion device extends to a distal end from the proximal portion along a second longitudinal axis. The second longitudinal axis is angled in second and third directions relative to the first longitudinal axis. The second direction is perpendicular to the first direction and the third direction being opposite the first direction. The distal portion includes a second fastener hole configured to receive a second fastener along a second fastener axis.

Abstract: The disclosed device solves the problem of fixation of a fractured humerus, or other long bone, by allowing a surgeon to first fix the proximal end of the implant and set the fracture, followed by fixation of the distal end without the use of screws.

Abstract: An implant for fixation of a bone includes a shaft having a proximal end and a distal end, and a longitudinal axis defined between the proximal end and the distal end. A plurality of blades are disposed on the shaft, and are helically twisted about the longitudinal axis. At least one of the blades has a variable blade width that increases in a direction along the longitudinal axis. A mechanism for coupling the implant to a second fracture fixation implant may be provided separately or in combination.

Abstract: Surgical implant for treating fractures of long bones, notably of the femur, having an intramedullary section (52) of elongated shape, adapted for being inserted into the medullary cavity (37), an extramedullary section (56) substantially parallel to the intramedullary section (52), a deformable curved loop (57) connecting the intramedullary section (52) to the extramedullary section (56), an inclined screw (61) traversing said intramedullary section (52) and said extramedullary section (56). By deforming the loop (57), a continuous adjustment of the angle (?) of the cephalic screw (61) and thus an optimal adaptation of the implant to the individual anatomy can be achieved. Thanks to its geometry, this implant induces a protection of the greater trochanter and limits the mechanical loads between the cephalic screw (61) and the rest of the implant.

Abstract: Among other things, there are disclosed embodiments of an intramedullary nail system for use in pediatric cases, including an intramedullary nail and a targeting assembly. Embodiments of the nail may be one-piece and include a proximal portion, a medial portion and a distal portion. The junction of the medial portion and distal portion is a bend that provides a small angle between the medial portion and the distal portion as viewed when the nail is substantially in a medial-lateral plane. The targeting assembly attaches to the proximal portion of the nail securely and enables easy insertion of fixing screws.

Abstract: A locking rod fusion device and method uses internal locking rods and screws that will lock together. In particular, the device allows the insertion of multiple locking rods in combination with a plate, which requires less dissection and disruption of soft tissues and vasculature. The device also provides a more stable internal construct for fusions that prevent non-unions, hardware failure and reoccurrence of deformities, such as Charcot foot. The device combines the strength of locking technology and the utility and ease of an internal rod system to provide a single stable construct in multiple planes as apposed to using multiple plates or screws separately.

Abstract: An apparatus to promote bone fusion between portions of bone tissue comprises a bone engagement member and a flexible retention member. The bone engagement member comprises (a) an extramedullary bone contacting main body with a first surface defining a hole in the main body and (b) an intramedullary bone engaging projection extending from the main body. The projection engages the intramedullary portions of at least one the portions of bone tissue. The projection includes a second surface that defines a retention passage in the projection. The retention passage is spaced away from the hole and oriented transversely relative to the hole. The flexible retention member is configured and dimensioned to extend through the retention passage and into the hole to help retain the projection in intramedullary engagement with the at least one of the portions of bone tissue.

Abstract: A supporting instrument with a modular intramedullary nail includes a plurality of intramedullary nails and a coupling module. Each intramedullary nail is in a form of a long rod and has a coupling portion arranged between two ends of the intramedullary nail and an abutting surface along a longitudinal face of the intramedullary nail. The coupling module is mounted to the coupling portions of the plurality of intramedullary nails for the abutting surfaces of the plurality of intramedullary nails to abut against each other and for assembling the plurality of intramedullary nails.

Abstract: An intramedullary nail includes (a) a longitudinal nail body extending from a proximal end to a distal end and having a central longitudinal axis and a diameter D, the nail body being configured for insertion into a medullary cavity of a bone, the nail body having a proximal portion and a distal portion longitudinally separated from one another; (b) a first transverse hole extending through the distal portion of the nail body at an angle transverse to the central longitudinal axis and defining a first transverse hole axis, the first transverse hole axis being offset from the central longitudinal axis of the nail body; and (c) a second transverse hole extending through the distal portion of the nail body at an angle transverse to the central longitudinal axis and defining a second transverse hole axis. The first transverse hole axis intersects the second transverse hole axis.

Abstract: A system for locking an intramedullary nail to a bone includes a first plate sized and shaped to be inserted through a channel of an intramedullary nail and dimensioned to prevent its passing through a locking hole of the intramedullary nail and a second plate sized and shaped to be positioned along a portion of an exterior of a hole drilled in the bone and dimensioned to prevent its passing through the hole drilled in the bone along with a connector couplable to the first and second plates and slidable through the channel of the intramedullary nail to extend through the locking hole from an interior of the channel to an exterior of a bone in which the intramedullary nail has been inserted.

Abstract: A system for fixing a fracture near a joint of a bone comprises (a) an intramedullary device including a longitudinal body and a head, the longitudinal body extending from a proximal end to a distal end, the head being attached to the proximal end of the longitudinal body; and (b) a plate implantable into a head portion of the bone to provide support to a joint zone, the plate engageable with the intramedullary device. The plate is substantially U-shaped and includes a midsection and a pair of arms extending from the midsection, the pair of arms forming a space therebetween, the space sized and shaped to accommodate the head of the intramedullary device.

Abstract: Apparatus for treating a bone fracture, the apparatus comprising: an anchoring tube comprising a hollow elongated shaft adapted for disposition in a hole formed in a bone and having a distal end, a proximal end and a lumen extending therebetween, and a substantially planar plate mounted to the proximal end of the hollow elongated shaft and adapted for disposition against the outer surface of the bone; wherein the plate comprises a top surface and a bottom surface, and further wherein the bottom surface of the plate is convex, such that when the anchoring tube is disposed in a hole formed in a bone and is rotated about the longitudinal axis of the hollow elongated shaft, the convex bottom surface of the plate maintains supporting contact with the outer surface of the bone.

Abstract: An intramedullary system for managing a fracture of a bone comprises a first rod for insertion into a medullary canal of the bone; and a second rod for insertion into the medullary canal of the bone. The intramedullary system may further include: a first hollow rod segment for receiving an end of the first rod near the first entry point; and a second hollow rod segment for receiving an end of the second rod near the second entry point, wherein the first hollow rod segment and the second hollow rod segment are tamped to force the first curved portion and the second curved portion of the first and second hollow rod segments inside of the bone, along with the first and second rods.

Abstract: An implantable intramedullary fixation structure adapted to be received in the intramedullary canal of a long bone is disclosed comprising a plurality of elongated segments. Each segment has a first end and a complementarily-shaped second end such that the first end of a segment cooperatively engages the second end of an adjacent segment. The segments define a guide aperture so as to be receivable over a guide for positioning in the intramedullary canal.

Abstract: The system and method for intramedullary plate fixation of the preferred embodiments include a first intramedullary plate of a first geometry with a plurality of bores, a second intramedullary plate of a second geometry with a plurality of bores, a plurality of fasteners that fasten the first and second intramedullary plates to bone, and an alignment fixture held outside of the body that indicate the location of the bores of the first and second intramedullary plates and through which the fasteners are aligned with the bores of the first and second intramedullary plates, allowing the surgeon to make incisions in the patients body in known locations of the bores, and thus allowing for a minimally invasive intramedullary plate installation and fixation procedure.

Abstract: The Intramedullary Nail System with Tang Fixation includes a nail for insertion into the intramedullary canal of the femur and a lag screw for insertion through the nail, into the femoral head of the femur. The nail is affixed to the inside of the femur using only extendable tangs that extend into the bone. Similarly, the lag screw is secured to the inside of the femur and femoral head using only threads and extendable tangs. Thus, the nail is held within the intramedullary canal of the femur, affixed internally by the lag screw and tangs, without the use of screws that penetrate the surface of the bone, and without requiring significant x-ray exposure.

Abstract: An intramedullary pin for treating a proximal fracture of the humerus, the pin having at least one distal and at least one proximal part which can be moved in relation to one another in order to modify the length of the implant and which have co-operating guide surfaces. The proximal and the distal part have co-operating stops for limiting the axial relative movement, the proximal part and distal part being capable of relatively free movement within the delimitations defined by the stops and each being provided with at least one transverse bore for receiving and/or fastening fixing means. The implant is also provided with a mechanism for locking the relative movement of the two parts about the implant axis.

Abstract: A short nail for treatment of an epiphyseal fracture close to a joint in a long bone includes a two part nail supporting body comprising a main body having a transverse through-bore and releasably attached to a stub body. The stub body has an end that has a diaphyseal slant. The stub body and the lateral slant form part of a diaphyseal anchor which is attachable to the main body via the stub body and which has a flat connecting web that has an oblique orientation and ending laterally in a plane with the diaphyseal slant. A connecting device rigidly and releasably connects the main body and the stub body together. An anchoring device fixes the flat web in flat abutment against the diaphysis. A fixation pin is insertable into the transverse through-bore in a crossed arrangement with, and at a fixed angle to, the supporting body in the state of treatment of the fracture. The fixation pin includes a mechanism to protect against axial movement of the pin.

Abstract: A bone fixation nail having an elongated body configured and dimensioned for insertion into a bone. The elongated body has a first slot extending from the leading end to a first end and defining first and second wings, the first and second wings configured to splay radially outward upon application of an internal stress thereto.

Abstract: An intramedullary nail includes a body sized and shaped for insertion into a medullary canal of a bone and extending along a longitudinal axis from a proximal end to a distal end and a channel extending through the body along the longitudinal axis in combination with a locking hole extending laterally through the body along a central axis and in communication with the channel, the locking hole defined by a first opening extending through a first portion of a wall of the nail and a second opening extending through a second portion of the wall substantially opposing the first portion, the first opening being elongated in a lateral direction relative to the longitudinal axis of the nail and the second opening including a coupling element configured to lock a portion of a bone fixation element therein.

Abstract: An intramedullary device includes an intramedullary nail extending along a longitudinal axis from a proximal end to a distal end, the nail including a channel extending longitudinally therethrough and an opening extending laterally through a wall thereof proximate the distal end, the channel including a ramped surface along a distal portion thereof opposite the opening. The device further includes a wire extending along a longitudinal axis from a proximal end to a distal end, the wire sized and shaped to be inserted into the channel of the nail such that the distal end engages the ramped surface to extend through the opening.

Abstract: A device for treating fractures of the femur and includes an intra-medullary pin (1) with a central longitudinal axis (2), a front piece (3), which is introduced into the medullary channel of the femur, a rear piece (4) and a hole (5) going through the rear piece (4) at an angle to the longitudinal axis (2) with a non-circular cross-section (6). A sliding sleeve (10) that is introduced through the hole (5) with non-circular cross-section, has a front end (11), a rear end (12), a central longitudinal drilling (13), an outer sleeve surface (14), an inner sleeve surface (15) and a longitudinal axis (16). A longitudinal bone fixation element (20) with a longitudinal axis (21), a head piece (22) with fixation element (23), which is brought into engagement with the femur head on use and a shaft (24), which is introduced co-axially into the sliding sleeve (10), whereby the outer sleeve surface (14) of the sliding sleeve (10) has a non-circular cross-section (17), at least in a partial region.

Abstract: An improved fastener apparatus includes an outer sleeve which is moved into a patient's body tissue. A distal end portion of the outer sleeve is expanded in the patient's body tissue. An inner sleeve is moved axially through the outer sleeve and a distal end of the inner sleeve is expanded in the patient's body tissue. The fastener apparatus may be provided with an external thread convolution on either or both of the inner and outer sleeves. During expansion of the distal end portion of either the inner or outer sleeve, a proximal end portion of the outer sleeve may be gripped and pulled to offset forces applied to the distal end portion of one of the sleeves. Although inner and outer sleeves may advantageously be utilized, the fastener apparatus may be constructed with only a single sleeve or three or more sleeves if desired. A secondary fastener assembly may be moved through a main fastener assembly.

Abstract: Treating fractures using one or both of an implant, such as an intramedullary nail, and a fastening assembly, such as a lag screw and compression screw assembly. The implant in some embodiments has a proximal section with a transverse aperture having a non-circular cross-section that may be shaped to selectively constrain the fastening assembly within the transverse aperture. Two or more components of the fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the implant, and to cooperate to resist a force moment applied thereto. Without the presence of one of the components, such as the lag screw, another component, such as the compression screw may not resist a force moment applied thereto.

Abstract: A system for implanting a prosthetic device with an opening into a bone includes a plug that is removably received within the opening of the prosthetic device. The system also includes a bone removal tool that advances into the bone from outside the bone and that removes a portion of the bone while advancing into the bone to reveal the plug. The bone removal tool includes a plug engaging portion that engages with the plug. The bone removal tool at least partially removes the plug from the opening of the prosthetic device while engaged with the plug. Moreover, the system includes an alignment system that detects whether the bone removal tool and the plug are substantially axially aligned.