Abstract: This disclosure relates to surgical instruments for alignment of bone cuts during surgeries on joints and in particular, during total replacement of joints. The surgical instrument comprises a contact surface shaped to fit a prepared end of the first bone of the joint and an artificial articular surface that imitates the native articular surface of the first bone that has been removed by the preparation of the first bone. The artificial articular surface is pivotable in relation to the surgical instrument. The instrument can be fitted onto the prepared bone and coronal balancing can be performed. After fixing a further instrument to the second bone the joint can be balanced in flexion. At the optimal flexion angle, the slope and the cutting depth can be adjusted to achieve alignment. The further instrument is then used as a guide for cutting the second bone at the resulting cutting depth, slope and varus/valgus angle.

Abstract: An augment device includes a hollow sleeve surrounding a channel extending through the hollow sleeve from a top to a bottom of the hollow sleeve, the hollow sleeve comprising a wall having an inner face and an outer face. The hollow sleeve includes at least one bending joint, the bending joint being configured for compressing the channel. Thereby the hollow sleeve may be compressed under an external force, leading to a decreased circumference and width of the hollow sleeve. This leads to a gap between the perimeter of the augment device and surrounding bone material, breaking any connections, By virtue of this, a much facilitated removal of the augment device can be achieved. Further, an extraction tool includes grippers for engaging and compressing the augment device, and further instruments, particularly a jig, for achieving an effective removal.

Abstract: The present invention discloses an intermediate segment (20) for arrangement between a concave implantation surface (14) of a joint component (10), particularly a femoral prosthesis, and bone tissue. The intermediate segment (20) comprises an intermediate segment body (23) with at least one side (24, 25) facing the joint component (10), wherein one (24) of the at least one side facing the joint component is convex. In addition, the intermediate segment (20) comprises a locking mechanism for attaching the intermediate segment to the joint component with at least a first (21) and a second (32) latching element, wherein at least one of the latching elements (21, 32) is movable. The present invention also relates to a joint component (10) comprising an intermediate segment (20) and a method for securing an intermediate segment (20) to a joint component (10).

Abstract: In various embodiments, an implant for interfacing with a bone structure includes a web structure including a space truss. The space truss includes two or more planar truss units having a plurality of struts joined at nodes and the web structure is configured to interface with human bone tissue. In some embodiments, a method is provided that includes accessing an intersomatic space and inserting an implant into the intersomatic space. The implant includes a web structure including a space truss. The space truss includes two or more planar truss units having a plurality of struts joined at nodes and the web structure is configured to interface with human bone tissue.

Abstract: An orthopedic system includes an augment that includes a proximal surface and a distal surface, a recessed slot extending along the distal surface, and a through-bore extending between the proximal and distal surfaces and intersecting the slot. The system also includes a coupling component that includes a head and a body. The head has an aperture and is configured to be slidingly received by the recessed slot wherein, when the head is received within the recessed slot, the aperture aligns with the through-bore. The system further includes a femoral prosthesis that has an articular side that defines condylar portions and a bone facing side opposite the articular side. The bone facing side defines a coupling bore. The coupling bore is configured to receive the body of the coupling component for connection thereto.

Abstract: Shoulder joint implants are disclosed herein for use in shoulder reconstruction that are configured to facilitate the inclusion a central bone screw for augmented bone fixation. The implant can include a baseplate (or metaglene) configured to secure a glenosphere or other prosthetic component to the glenoid. To facilitate lateral or proximal insertion of a central bone screw through the implant, a throughbore defined along the central axis of the metaglene can be widened to accommodate the maximum diameter of the screw. To enable fixation of the glenosphere to the metaglene, a collet can be configured to engage the smaller diameter of a glenosphere coupling element and inserted into the central throughbore. The collet and the bone screw can be separate parts, thereby making insertion of the bone screw optional. Alternatively, the collet and bone screw can be integrated together to form a unitary construct.

Abstract: A knee spacer device configured to be implanted temporarily at the joint area between the tibia and femur of a patient to replace an infected joint prosthesis and to maintain the size or spaces of the patient's joint area before implanting a new prosthesis includes a tibial unit and a femoral unit.

Abstract: A patient-specific augment can be attached to an implant component for a bone of a joint of a patient. The patient-specific augment has first and second surfaces. The first surface is a three-dimensional patient-specific surface that closely matches and can mate to a substantially unaltered and unresected surface of a bone defect of the specific patient only in one position. The second surface is designed to engage a non-custom surface of the implant.

Abstract: An orthopedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.

Abstract: An orthopaedic prosthesis including a tibial tray is disclosed. The tibial tray includes a distal pocket and a plurality of inner pockets. Each inner pocket includes a channel sized to receive bone cement. The tibial tray includes distal-facing surfaces that have a surface roughness (Ra) equal to about 5.0 microns.

Abstract: Modular prosthesis components having first and second relief patterns, the first relief pattern being complementary to the second relief pattern such that a component having the first relief pattern may seat fully on and in register with a component having the second relief pattern.

Abstract: Disclosed herein are prosthesis, surgical tools, and methods to preserve one or more ligaments of the knee by cutting a least a portion of natural bone during joint surgery, with a portion of the natural bone retained along with the natural attachment of an associated soft tissue structure. The natural bone portion with the associated soft tissue may be re-secured to relevant anatomy during or after knee surgery, which may include retention by features of a tibial prosthesis.

Abstract: A method of constructing a surgical implant is provided. The method comprises providing a multiplicity of substantially identical blocks, each having features thereon to allow blocks to be mechanically joined together. A surgical implant may then be constructed by using these features to join the blocks together into a desired configuration.

Abstract: A femoral extension prosthetic component for use in a unicondylar meniscal bearing unicompartmental knee replacement is described. The femoral component comprises a securing element and a bearing surface, the securing element adapted to abut and be connected to a distal end of a femur bone, and the bearing surface adapted to abut a meniscal bearing. The femoral component includes an entrapment portion adapted to extend beyond the meniscal bearing. Tibial components and meniscal bearings are also described, as well as methods of using such components.

Abstract: The embodiments disclosed herein relate to a valve that is configured to be coupled to a stent. The valve may include a body, a rim, and an opening. The opening may include three or more leaflets that are configured to open and close. The valve may further include a reinforcement member that may be coupled to the rim. The reinforcement member may be formed of a mesh or mesh-like material or may be made of a polymeric film. The reinforcement member may aid in preventing a stitching element from tearing through the rim of the valve and may be coupled to the inner diameter or the outer diameter of the rim. The reinforcement member may also be molded within the rim.

Abstract: A system and method for joint arthroplasty may utilize one or more scaffolds to help support an arthroplasty prosthesis for the joint. A natural or prosthetic articulating surface may first be removed from one of the bones of the joint. This may expose a resection surface. A target portion of the resection surface may be identified based on, for example, fit and function testing of the joint with a trial arthroplasty prosthesis in place on the resection surface. One or more scaffolds may be placed on the target portion, and bone cement may be positioned adjacent to the scaffold(s) to define a raised surface that provides better fit and/or function than that which would be obtained with placement on the recessed surface. The arthroplasty prosthesis may be secured to the raised surface through the use of the bone cement.

Abstract: A modular knee prosthesis system includes a femoral component having a stem and a sleeve. The system is modular, and provides the surgeon with the option of distally offsetting the joint line by controlling the relative axial positions of the stem and the sleeve. Alternative options include providing sleeves with tapered bores of different diameters, providing a shim to be placed between the sleeve and the stem and providing the stems as adapters having different diameters.

Abstract: A method of trialing prosthetic components of a knee prosthesis including positioning a femoral trial component on a surgically-prepared distal end of a patient's femur, assembling a tibial bearing trial component, and positioning the tibial bearing trial component on a tibial base trial component seated on a surgically-prepared proximal end of a patient's tibia. The method may also include adjusting the patient's leg with the tibial bearing trial component engaging the femoral trial component, and readjusting the patient's leg with the tibial bearing trial component engaging the femoral trial component after positioning the tibial bearing trial component on the tibial base trial component and a keel punch.

Abstract: Implantable devices for the surgical treatment of bone, and particularly to a bone defect at a joint region, and even more particularly at the subchondral bone level of the joint region, are disclosed. The implantable devices may be formed of a bone material, and configured to serve the dual functions of providing mechanical strength and structural integrity to the area to be treated, while also facilitating the dispersal of a flowable material in the same area. Associated delivery tools are also provided.

Abstract: A prosthetic for use in an interphalangeal joint including a body portion and a weave portion. The body portion may be manufactured from a hydrogel material. The body portion includes an pair of stems and an intermediate section located in between the two stems. The intermediate section includes a recess allowing for flexing of the body portion.

Abstract: A knee prosthesis kit includes an implant and an augment. The implant has a base and a stem extending from the base, and the augment has a base and a conical, cylindrical, or anatomic portion extending from the base. The augment base has at least two openings for receiving fasteners for securing the knee augment to the implant. The portion and the base define a bore for receipt of the implant post. A coupler includes a mating portion for receipt in a bore of an implant post, and a cone-shaped portion extending from the mating portion. A method of providing fixation of knee implants includes securing an augment to an implant and positioning a conical, cylindrical, or anatomic portion of the augment within the intramedullary canal of the tibia or femur.

Abstract: An orthopaedic augment includes a porous material, which is removably attached to a medical implant. The porous material has a bone ingrowth surface for interfacing with an existing bone material and another surface for interfacing with the medical implant.

Abstract: This disclosure is directed to a resilient interpositional arthroplasty implant for application into a knee joint to pad cartilage defects, cushion a joint, and replace or restore the articular surface, which may preserve joint integrity, reduce pain and improve function. The implant may endure variable joint compressive and shear forces and cyclic loads. The implant may repair, reconstruct, and regenerate joint anatomy, and thereby improve upon joint replacement alternatives. Rather than using periosteal harvesting for cell containment in joint resurfacing, the walls of this invention may capture, distribute and hold living cells until aggregation and hyaline cartilage regrowth occurs. The implant may be deployed into debrided joint spaces, molding and conforming to surrounding structures with sufficient stability to avoid extrusion or dislocation.

Abstract: Techniques and instruments for knee replacement surgery that allow for the removal of an oval oblong-shaped allograft bone and cartilage plug from a donor distal femur. The instruments include (i) sizing guides to match the recipient's femoral size and curvature to that of a donor femur (the sizing guides also acting as a wide pin placement template for the donor distal femur); (ii) osteotomes that cut the curved and straight portions of the implant shape (these may be disposable or reusable); and (iii) templates that fit over the guide pins and have openings to allow the osteotomes to cut the donor femur plug to the correct size, shape and depth. The instruments allow for a non-circular shape to be extracted from a donor femur for use in a bone-saving osteoarthritis distal femur resurfacing procedure.

Abstract: An improved uni-compartmental implant has a shaft having a proximal end attached to a head and a distal end, and one or more raised portions spaced apart along the shaft to resist back-out. The length between the head and distal end is preferably less than 50 mm, the distal end of the shaft has a diameter on the order of 2 to 3 mm, the proximal end of the shaft has a diameter on the order of 2 to 4 mm, and the head has a diameter ranging from 4 mm or less to 20 mm or more, making the device suitable for knee arthroscopy and other applications.

Abstract: In typical knee repair or replacement surgery, a femoral implant includes a pair of convex condylar surfaces that can slide within corresponding concave bearing indentations on a tibial bearing surface. The tibial bearing surface is disposed on a proximal side of a tibial platform. A stem can extend distally from the tibial platform, and can attach to a cut proximal end of the tibia. A tibial augment can attach to the distal side of the tibial platform, and can reduce or eliminate a lateral overhang of the tibial platform with respect to the cut proximal end of the tibia. The tibial augment may have a tapered periphery. The taper may extend inward in a distal direction. The taper may vary along the periphery of the tibial augment, so that at least a portion of a medial taper is different from at least a portion of a lateral taper.

Abstract: Methods and devices for correcting wear pattern defects in joints. The methods and devices described herein allow for the restoration of correcting abnormal biomechanical loading conditions in a joint brought on by wear pattern defects, and also can, in embodiments, permit correction of proper kinematic movement.

Abstract: A medical device for implantation in a knee joint of a human patient is provided. The medical device comprises: an inner surface (130, 1707) and an outer surface (131, 1704). The inner surface comprises: a first point (121), a second point (124), a third point (122), a fourth point (125), a fifth point (123), and a sixth point (126), all points located on different places along a length axis (132, 1705) of said inner surface. A first straight line (127), reaching from the first point to the second point is parallel to a second straight line (128) reaching from the third point to the fourth point, which in turn is parallel to a third straight line (129) reaching from the fifth point to the sixth point. The first and third straight lines are of equal length and the second straight line is longer than the first, furthermore the third straight line is positioned between the first and third straight lines.

Abstract: The invention relates to an operation system comprising at least one implant and means for the fastening of the implant to a bone, wherein the fastening means include at least one solid spacer, which can be formed of hardened bone cement and is arranged between the implant and the bone in the implanted state, and hardenable liquid bone cement which can be introduced into hollow spaces or intermediate spaces present between the spacer and the implant and/or between the spacer and the bone and wherein the spacer, on the one hand, and the liquid bone cement, on the other hand, are provided with contrast agents chosen in dependence on an imaging observation process or inspection process, in particular an X-ray process, to be used in or after the operation such that the spacer and the liquid cement can be distinguished from the surroundings and from one another on the observation or inspection of their position, in particular in an X-ray.

Abstract: An instrument system for setting the internal-external rotation of a prosthetic femoral component with respect to a proximal tibia has a bone resection instrument having a planar surface for engaging a planar surface of a resected distal femur. The bone resection instrument system has a cutting guide for guiding a tool for resecting a posterior surface of the distal femur and forming a cylindrical surface on the posterior condyle intersecting the planar surface. The cylindrical surface defined by an axis extending in a direction generally perpendicular to the resected planar surface. The system includes a trial component having a planar surface for engaging the planar surface of the resected distal femur and having posterior condyles having a cylindrical anteriorly facing surface engagable with the resected cylindrical surface on the posterior condyle.

Abstract: A modular knee prosthesis system comprises a distal femoral articulation component, a distal augment, a posterior augment and a first connector for securing at least one of the augments to the distal femoral articulation component through a bore in the augment and an opening in the distal femoral articulation component. The distal femoral articulation component has a distal bone-facing surface, a posterior bone-facing surface and an opening. The openings into the bores of the augments are in the medial or lateral side surface of the augment. Both augments can be mounted and removed from the distal femoral articulation component from either the medial or lateral side.

Abstract: A tibial tuberosity advancement (TTA) system is configured to maintaining a tuberosity in an advanced position relative to a tibial body. The TTA system includes an implant, a spacer, and a spacer fixation member.

Abstract: An implant for a hip can include a lateral augment adapted to be coupled to a lateral side of a femoral body implant. The lateral augment can include a body portion having a first surface, a second surface opposite the first surface, and a protrusion extending from the second surface. The protrusion can have a shape adapted to mate with a complimentary shaped recess formed in the lateral side of the femoral body implant. An aperture can be positioned in the body portion and extend through the protrusion. A fastener can be received through the aperture and adapted to be threadably secured to the lateral bore. The fastener can be configured to have a length sufficient to pass through a portion of a greater trochanter for securing the portion of the greater trochanter and the lateral augment to the femoral body implant.

Abstract: The invention concerns monolithic foam sleeves that comprises titanium or titanium alloy foam having a porosity of 50 to 85% and possess a proximal end, a distal end, an interior wall that defines an interior channel and extends from the proximal end to the distal end; and a terraced outer surface that tapers such that said sleeve is widest at the distal end and most narrow at the proximal end.

Abstract: An osteotomy system, typically for tibial alignment correction, includes a wedge implant and an osteotomy guide. The wedge implant is generally U-shaped and its upper and lower surfaces may be inclined with respect to one another in two orthogonal planes to correct respective misalignments. The osteotomy guide controls cutting of the osteotomy opening and the drilling of a hole defining the apex of the osteotomy, forming a bony hinge about which the osteotomy may be opened.

Abstract: A device for performing a surgical procedure on a knee includes an adjustable femoral portion, a tibial. portion and at least one sensor coupled with the femoral and/or tibial portions to sense pressure exerted by the a moral and tibial portions against one another. The femoral portion is adapted for removably coupling with a distal end of a Femur to adjust tension in soft tissue adjacent the knee and has at least one positioning feature adapted to move relative to the distal end of the femur as the femoral portion is adjusted, thus helping position a femoral prosthetic on the distal end of the femur. The sensor(s) may he adapted to sense pressure at medial and lateral sides of the knee, and relative pressures may he displayed as data on a visual display. Adjustments to the femoral member may be made to balance pressure at flexion and extension of the knee.

Abstract: An orthopaedic surgical instrument system that includes an orthopaedic surgical instrument adapted to be positioned on a proximal end of a patient's tibia, and a tibial bearing trial assembly configured to be coupled to the orthopaedic surgical instrument. The tibial bearing trial assembly includes a plurality of tibial bearing surface trial components and at least one shim.

Abstract: A spacer apparatus and method of using the same can be employed to achieve improved fit and balance in a knee joint in knee arthoplasty without requiring multiple cuts to the distal femur or proximal tibia. The spacer apparatus is composed of a biocompatible material in a lattice structure. The spacer apparatus can be pre-selected or pre-shaped, or can be selected or shaped at the time of use to have a thickness and shape appropriate to be used as a spacer to improve knee fit, or as a shim to improve knee balance. The spacer apparatus can be used in connection with a femoral implant, a tibial implant, or both. The spacer apparatus can be shaped to alter the orientation of a femoral or tibial implant in the varus/valgus orientation, the anterior/posterior orientation, or both. The spacer apparatus can be used singly or in combination with other spacer implants to improve fit and balance.

Abstract: A system for manipulating energy transferred by members defining a joint. The system includes a first attachment structure configured to be attached to a first member of the joint and a second attachment structure configured to be attached to a second member of the joint. There is also an adjustable energy absorbing device attached to the first attachment structure and second attachment structure, wherein adjusting the energy absorbing device changes the load manipulating characteristics of the energy absorbing device.

Abstract: A method and system for the creation or modification of the wear surface of orthopedic joints, involving the preparation and use of one or more partially or fully preformed and procured components, adapted for insertion and placement into the body and at the joint site. In a preferred embodiment, component(s) can be partially cured and generally formed ex vivo and further and further formed in vivo at the joint site to enhance conformance and improve long term performance. In another embodiment, a preformed balloon or composite material can be inserted into the joint site and filled with a flowable biomaterial in situ to conform to the joint site. In yet another embodiment, the preformed component(s) can be fully cured and formed ex vivo and optionally further fitted and secured at the joint site.

Abstract: The present disclosure includes a surgical kit for preparing a damaged area of a human knee to receive at least one graft. The kit includes a moldable material positioned over the damaged area to form a template. Desirably, a tape is placed over the template and cut to correspond to a template area so that the tape is used to determine the number and/or a dimension of the openings and the number and/or dimension of a corresponding graft to be inserted into each opening. The graft is adhered to a surface of the tape.

Abstract: Disclosed is a trial implant having a body and a tab. The body may include a recess and may be sized to closely approximate a permanent implant. The tab may be more durable than the body, and may be disposed within the body and wholly contained within the recess. Also disclosed is a method of performing a trialing procedure including providing a trial implant as described, providing a tool to attach to the tab, inserting the implant onto a resected joint, evaluating and extracting the implant. The same procedure may then be performed with a second implant. The method may further include a tool having an attachment portion that is substantially or wholly contained within the recess. A kit is disclosed including a plurality of trial implants of incrementally different shapes and sizes. The kit may further include a tool. Also disclosed is a method of making the described implant.

Abstract: An implant for replacing a portion of an articular surface including a load bearing surface and a bone contacting region. The load bearing surface had a contour defined by a first curve string which is based on a contour of the articular surface being replaced in a first plane. The load bearing surface of the implant is further defined by the contour of the articular surface being replaced in a second plane, in which the first and second planes are mutually intersection planes.

Abstract: A method for setting the internal-external rotational position of a prosthetic femoral component with respect to the tibial comprises: forming a cylindrical surface on the posterior femoral condyles. The cylindrical surface is formed about an axis extending in a proximal distal direction with respect to the femur. A template is placed on the distal femur which has a cylindrical guide surface for engaging the posterior femoral condyles. When placed against a planar resected surface of the distal femur the guide surfaces contact the cylindrically shaped posterior condyles. The template is rotated on the cylindrical guide surface as the knee joint is moved from flexion to extension until the template cylindrical guide surfaces are in a position with respect to the tibial condyle surfaces to properly balance the knee ligaments.

Abstract: The invention concerns monolithic foam sleeves that comprises titanium or titanium alloy foam having a porosity of 50 to 85% and possess a proximal end, a distal end, an interior wall that defines an interior channel and extends from the proximal end to the distal end; and a terraced outer surface that tapers such that said sleeve is widest at the distal end and most narrow at the proximal end.

Abstract: A system and method for sharing and absorbing energy between body parts. In one aspect, the method involves identifying link pivot locations, fixing base components and minimally invasive insertion techniques. In one particular aspect, the system facilitates absorbing energy between members forming a joint such as between articulating bones.

Abstract: A distal femoral knee-replacement component provides additional points of cam action by either distinct bars or interconnected structural elements such as cam extensions to prevent early translation of the knee or dislocation of the femoral component over the tibial post which can occur in cruciate-substituting designs.

Abstract: An expandable trial augment, a trial including an augment and a method for using an expandable trial augment are provided. The trial augment is preferably biased to expand in at least one direction.

Abstract: Apparatus for performing an open wedge, low femoral osteotomy, the apparatus comprising an osteotomy guide, a hinge pin and an osteotomy implant, the osteotomy guide comprising: anterior and posterior tissue shields having (i) openings for receiving the hinge pin and defining the hinge pin axis, and (ii) profiles configured to enable fluoroscopic alignment of the hinge pin axis parallel to the sagittal plane of the patient, a cutting guide comprising a cutting slot for defining a cutting plane extending parallel to, and through, the hinge pin axis, and a drill guide comprising a hole for forming a guide hole in the femur which extends substantially perpendicular to the cutting plane, the hinge pin comprising an elongated body, and the osteotomy implant for positioning in a wedge-shaped opening formed about the cutting plane and for receiving a screw extending through the guide hole.

Abstract: A prosthesis for replacing an articulating portion of bone is provided. The prosthesis can include an adaptor operable to replace a portion of the bone. The prosthesis can further include a sleeve coupled to the adaptor. The sleeve can define an offset coupling axis. The prosthesis can also include an articulating portion operable to replace the articulating portion of the bone. The sleeve can be positionable to couple the articulating portion to the offset coupling axis at a predetermined orientation.