Abstract: This surgical ankle repair method comprises the steps of providing an instrumentation assembly for positioning an ankle prosthesis, the instrumentation assembly including a talar alignment instrument and a cutting block, the talar alignment instrument comprising a front portion and two fins extending from the ends of the front portion, said fins being adapted to be positioned in gutters extending below a tibia of a patient and around a trochlea of a talus of the patient, each fin including a reference marker, the cutting block comprising a tibial alignment structure and a recess which engages a protrusion provided on the talar alignment instrument, positioning the talar alignment instrument such that the fins are disposed in the gutters extending below the tibia and around the trochlea of the talus; aligning the talar alignment instrument so that the fins are parallel to the rotational plane of the talus, perpendicular to the rotational axis of the talus, and so that the reference markers are aligned with a l

Abstract: An orthopaedic prosthesis is disclosed. The orthopaedic prosthesis includes a frame including a plurality of beams defining an open-cell structure and a shell applied to the frame. The frame includes a proximal arm, a distal arm, and a central body connecting the proximal arm to the distal arm. The shell extends over the proximal arm, the distal arm, and the central body of the frame. A method of implanting an orthopaedic prosthesis is also disclosed.

Abstract: A prosthetic implant replaces hyaline cartilage in a synovial joint with a flexible polymer sliding surface, preferably of hydrogel, on a segmented support with an array of adjacent segments to which the hydrogel is molded. Adjacent segments are laterally and angularly displaceable permitting the implant to conform to rounded or irregular surfaces or to be rolled or folded for arthroscopic placement. Tension cables threaded through segments along a circuit can cinch segments together for stiffening the supporting layer and/or the cable can pull the implant against a bone surface. Adjacent segments can have inter-engaged structures. In some embodiments the segments are carried on a flexible foil or fibrous sheet.

Abstract: An implant (30) for a mammalian bone joint (3) for spacing a first bone (2) of the joint from a second bone (1) of the joint while allowing translational movement of the second bone in relation to the first bone is described. The implant comprises (a) a distal part (31) configured for intramedullary engagement with an end of the second bone, (b) a proximal part (34) having a platform (15) configured for non-engaging abutment of an end of the first bone and translational movement thereon, and (c) an articulating coupling (10, 16) provided between the distal and proximal ends allowing controlled articulation of the first and second bones. The bone-abutting platform is shaped to conform to and translate upon the end of the first bone. A kit for assembly to form the implant of the invention, and the use of the implant to treat osteoarthritis in a bone joint, are also described.

Abstract: A sterilizable disposable surgical instrument is formed by an implant for bone fusion as well as an implant sleeve surrounding the implant for bone fusion. The implant has a distal implant section, a proximal implant section, and a coupling section with a polygonal cross-section profile between the distal and proximal implant section. The implant sleeve has a protective cap and a handle, which can be connected to one another. A first bore is configured in the protective cap in the longitudinal direction and receives the proximal implant section of the implant. A second bore is configured in the handle running in the longitudinal direction and receives the distal implant section of the implant for bone fusion. A coupling region having a through-opening is configured in the second bore in the handle, into which the coupling section of the implant for bone fusion engages in an integral and force-locking manner.

Abstract: A method of implanting a wrist prosthesis in a distal portion of an ulna for articulation at least near a radius and a carpal complex of a wrist joint is provided. The method can include forming an incision near a distal portion of the radius and ulna joint. The method can also include resecting a distal portion of the ulna and positioning a stage member in a fixed position relative to the ulna. The method can further include sliding a bearing member relative to the stage member to hold the bearing member relative to the stage member and the distal ulna. The method can also include fixing the bearing member to a bearing fixation member extending from the stage member, and attaching soft tissue to at least one of the bearing member and the stage member.

Abstract: A prosthesis for implantation in an animal or human subject, said prosthesis comprising a first component for attaching to a radius bone in use and a s second component for attaching to an ulna bone in use, the prosthesis further comprising a linkage for linking the first and second components substantially rigidly with respect to one another in use. Preferably the prosthesis is configured to allow the linkage to move relative to the first and/or second components and be retained substantially rigidly at a selected position in normal use, such that the first and second components can be retained substantially rigidly relative to one another in normal use.

Abstract: A volar fixation system includes a plate intended to be positioned against the volar side of the radial bone. The plate includes threaded holes for receiving fasteners which lock relative to the plate.

Abstract: A talonavicular joint prosthesis (1) adapted to replace the natural talonavicular joint that exists between a patient's talus and navicular bones, after appropriate surgical preparation of the joint-related portions of these bones so as to create a new joint space to accommodate this prosthesis, includes talar (2) and navicular (4) components. Each of these have inner (8, 28) and outer (6, 26) surfaces whose average separate distance is defined as the component's average thickness. These components inner (8, 28) surfaces are configured to: (a) generally follow the anatomic contour of the original joint surface to which each component is to be attached, and (b) minimize each component's average thickness, consistent with providing sufficient strength and rigidity for the components, so as to require minimum bone resection in the creation of the new prosthesis-accommodating, joint space.

Abstract: Implant devices and cutting clamp apparatuses and methods for creating the implants for insertion into a patient's joint to restore anatomic length and assist in final positioning of the bones following removal of cartilage and/or bone in preparation for fusion. A first implant is a biplanar implant having a shape to mimic the normal anatomical shape of the bones the implant is configured to mate with. The first implant may be cut using a cutting clamp and jig having the anatomical shape of the bones the implant will be inserted within or between. A second implant is a cylindrical piece of bone having a convex end and a concave end for mating with bones reamed to have the opposite mating surfaces. The second implant is created using cup and cone reamers having dimensions corresponding to the size of the patient's bones. Surgical methods for inserting the implants within a patient.

Abstract: A wrist implant requires minimal resection of the distal radius and preserves the sigmoid notch and articulation with the head of the distal ulna. The wrist implant generally includes a radius portion, a carpal portion and a carpal ball. The wrist implant includes a primary articulation and a secondary rotational articulation. The primary articulation occurs between the radius portion and the carpal ball. The secondary articulation occurs between the carpal ball and the carpal portion.

Abstract: An implant for carpal hemiarthroplasty includes an articular component having a convex articular surface shaped to generally conform to an unresected distal end of a radius bone. A bearing component is rigidly fixed to the articular component opposite the convex articular surface and has a bearing surface. A carpal plate is rotatably attachable to the bearing component and has a proximal surface and a distal surface. The proximal surface has a contour that substantially conforms to the bearing surface.

Abstract: A device for repairing Hallux Valgus (HV) is disclosed comprising a first arm adapted to be affixed inside the canal of the first metatarsus (1MT) of a human foot, a second arm adapted to be affixed inside the canal of the second metatarsus (2MT) of a human foot and a spring mechanism connected between the first arm and the second arm, active to push the 1MT closer to the C2MT. The device may comprise fixating means adapted to fixate said first arm inside said MT and said second arm inside said 2MT and the spring mechanism is removable from the first and the second arms.

Abstract: Methods of forming polymeric articles using plasma treated polymer resins, and orthopedic implants comprising a polymeric article wherein the polymeric article has reactive groups bonded to polymer molecules in an interior region of the polymeric article.

Abstract: A multi-component joint assembly incorporated into reconditioned end surfaces established between a first bone and opposing second bone. A first component is anchored into a reconditioned end surface of the first bone and exhibits a first exposed support surface. A second component is anchored into a reconditioned end surface of at least one of radius and ulna bones and exhibits a second exposed support surface. An intermediate component is supported in articulating fashion between the first and second anchored components. A plurality of micro debris entrapment chamber subassemblies are incorporated into the components and communicate with at least one of the articulating surfaces for isolating and capturing debris resulting from joint wear.

Abstract: An implant that facilitates the fusion of a first bone part with a second bone part includes an implant body that extends between the first bone part and the second bone part. The implant body includes a first portion that fits within a first receiving aperture in the first bone part, and the implant body includes a second portion that fits within a second receiving aperture in the second bone part. At least one of the first portion and the second portion can be made of bone. Additionally, at least the second portion is formed to have a non-circular cross-sectional shape to inhibit relative motion between the bone parts and the implant body.

Abstract: Among other things, there are disclosed embodiments of implants for repairing or relieving damage to the distal radioulnar joint. A component for replacing at least part of the ulnar head includes a concave surface for accommodating a convex surface of a component for attachment to the radius, e.g. in the sigmoid notch of the radius.

Abstract: A system and method of implanting a distal wrist implant relative to a host bone is presented. A distal radial component having a body including a first connection portion couplable to a stem is coupled to a second prosthetic coupled to a medial surface of the body. The second prosthetic replaces at least a portion of the sigmoid notch.

Abstract: A method and system is provided for repairing bone fractures at locations where high levels of stability are required. The system employs two plates to buttress a fracture from both the dorsal and volar sides. The plates are affixed to one another using screws that are installed from a volar plate, through the bone and into a dorsal plate. The method provides for use of a directional guide that allows the precise placement of Kirschner wires for temporary fixation of the fracture, installation of a first bone fixation plate using the installed K-wires for alignment, installation of a second bone plate adjacent the bone to be repaired and opposite the first bone plate, and installation of cannulated fasteners between the two opposing bone plates such that the fasteners rigidly engage both of the bone plates.

Abstract: Surgical implant systems, methods, and components are described herein. More particularly, the disclosure relates to joint arthroplasty systems, methods, and components. Particular embodiments described herein can be used to modify the subtalar joint (e.g., posterior facet of the subtalar joint), calcaneocuboid, talonavicular, and any other suitable joint. An exemplary implant system comprises a first implant component, a second implant component, and an insert.

Abstract: Apparatus for fusing a first bone of a joint with a second bone of a joint, the apparatus comprising: a fusion block comprising a hollow tubular structure characterized by a first end, a second end and a lumen extending from said first end to said second end, the first end being configured to engage the first bone of the joint and the second end being configured to engage the second bone of the joint, the lumen being configured to span the distance from the first bone of the joint to the second bone of the joint and to receive and retain bone graft material therein, whereby to facilitate bone fusion across the fusion block; and at least one fusion plate for connecting the fusion block to the first bone of the joint and the second bone of the joint.

Abstract: A wrist implant requires minimal resection of the distal radius and preserves the sigmoid notch and articulation with the head of the distal ulna. The wrist implant generally includes a radius portion, a carpal portion and a carpal ball. The wrist implant includes a primary articulation and a secondary rotational articulation. The primary articulation occurs between the radius portion and the carpal ball. The secondary articulation occurs between the carpal ball and the carpal portion.

Abstract: An apparatus for stabilizing a joint with low relative motion during orthopedic surgery. The apparatus includes a press-fit fastener body and a coupler. The press-fit fastener body has a proximal end and a distal end and is configured to be press-fit into a tunnel in a first bone member. The coupler is located on or is part of the press-fit fastener body and is configured to receive at least one flexible element trailing from at least one suture anchor. At least a portion of the suture anchors are located within a second bone member.

Abstract: One embodiment of the invention includes a sinus tarsi implant with a proximal portion that includes a spherical portion. The spherical portion may include apertures for tissue in-growth. The implant design limits patient discomfort due to pressure points. Other embodiments are disclosed.

Abstract: An implant for the trapezium of the thumb carpometacarpal (CMC) joint comprising an integral elastomeric member configured to include a body portion having a tapered neck, having extending from one end thereof an elongated, longitudinally extending tapered portion adapted to be embedded into a reamed out-channel in the thumb metacarpal bone. After implantation, in the preferred embodiment of the method according to the invention, a segment of a nearby tendon, for example, the APL or FCR tendons, may be wrapped around the tapered neck of the implant to secure it in position, thereby forming a reinforced structure to inhibit dislocation of the prosthesis. However, in other methods, various other securing elements, including, but not limited to acellular matrices, may be used to retain the implant in position.

Abstract: An expandable implantable device sized for occupying space in a cavity formed between small bones in a human hand or foot. Comprising a first smooth surface on which a first small bone may slide. May include an opening extending through the device for promoting fibrotic development through the opening from a direction from both thumb metacarpal and trapezium. An inflation cannula and/or needle may be attached to inflation port and inflation valve for introducing expansion fluid into the device. In some embodiments, an implant is inserted in a deflated mode and positioned so that a thumb metacarpal abuts distal side of the device when expanded, and trapezium abuts a proximal side thereof. At least one of distal side and proximal side include a smooth surface for allowing relative movement of thumb metacarpal or/and trapezium with respect to the device.

Abstract: An implant couples a first bone of a hand to a second bone of the hand. The implant includes a body that defines a median plane. The body also defines a first joint surface having a first central region that articulates with the first bone. The body further defines a second joint surface having a second central region that articulates with the second bone, and the second central region is disposed on an opposite side of the median plane of the body relative to the first central region. The first and second central regions correspond to profiles of first and second axial segments, respectively, the first and second axial segments are each one of a cylinder, a cone and a torus and are centered on first and second axes, respectively, and the first and second axes, as projected on the median plane, are substantially perpendicular to each other.

Abstract: A carpal plate for use in a wrist replacement prosthesis includes at least three non-linearly aligned, internally threaded openings, each opening defining a thread-screw axis with at least one thread-screw axis divergent from the other two thread-screw axes; and further including hollow core screws for the injection of a cement compound to aid in anchoring the screws into the cancellous portion of the carpal bones.

Abstract: An arthrodesis implant is for a finger joint of a hand of a patient. The arthrodesis implant may include an extramedullary proximal anchor including a first member having a fastener-receiving passageway therethrough to receive a fastener to anchor the first member to an extramedullary portion of a proximal bone of the finger joint of the hand of the patient. The arthrodesis implant may also include an intramedullary distal anchor having a second member for being anchored within an intramedullary portion of a distal bone of the finger joint of the hand of the patient, and a coupling for securing the first and second members together.

Abstract: The invention relates to a joint part prosthesis, particularly for a finger joint, consisting of either a proximal or a distal component, as well as a shaft that extends away from this component, to be mounted in a bone, which shaft is configured with a fin-like anti-twist device. According to the invention, it is provided that as an anti-twist device (7), at least two anti-twist elements (8) are disposed on the mantle surface (6) of the shaft (4), with rotation symmetry, and extend radially away from this mantle surface (6) and in the longitudinal direction of the shaft (4), whereby the distance of the anti-twist elements (8) from the mantle surface (6) decreases slightly in the direction toward the free end (5) of the shaft (4).

Abstract: The invention relates to an intramedullary implant for use between two bones or two bone fragments. The implant includes a single-piece body having a generally elongate shape and having, at each end, areas for anchoring to the bone portions in question, characterized in that one of said areas has a generally cylindrical shape while the other area has a flat cross-section.

Abstract: System, including methods, apparatus, and kits, for replacement of at least one surface region of a distal radioulnar joint using at least one prosthesis. In some embodiments, the system may provide restoration of normal, unconstrained biomechanics of the joint, which may preserve rotation and translation and ensure durability of the joint.

Abstract: The invention relates to an implant (1) for osseous fusion between two bones, including a first portion (20) having a longitudinal axis A, for being inserted in the first bone and including a first means (24) for attaching said implant in said first bone, and a second portion (30) having a longitudinal axis B, for being inserted in the second bone and including a second means (34) for attaching said implant in said second bone, said first and second portions (20, 30) being connected by a central core (40), said central core being a solid body, the cross-section of which, in a plane perpendicular to said longitudinal axis A, has the shape of a star having at least three points (41, 42, 43), said first portion having three tabs (21, 22, 23), each tab extending along said longitudinal axis A from the free end (41a, 42a, 43a) of one of the points of said central core.

Abstract: Devices and treatments for various joint conditions include a resilient elongate orthopedic device inserted into a joint space using a suture. The suture is passed through the joint space and used to pull the orthopedic device into the joint space. The suture may be using a percutaneously inserted needle or other type of needle-based delivery instrument. The resilient elongate orthopedic device may be restrained to a reduced profile that permits minimally invasive implantation, but assume an enlarged profile when positioned at an implantation site.

Abstract: Basal thumb joint implant has a head with a smooth, generally hemispherical, medio-proximally directed, articulating surface, and a generally abrupt, distally directed, truncation thereto; and a stem attached to the head, which arises from the truncation of the head and includes at least one of the following features: A) a general angle of attachment to the head which is acute in relation to the truncation of the head; B) a flanged cross-sectional stem profile; C) an inwardly curved stem; D) an eccentric head attachment site for the stem. The implant may be one-piece or modular in construction.

Abstract: Devices and treatments for various joint conditions include a resilient elongate orthopedic device inserted into a joint space using a suture. The suture is passed through the joint space and used to pull the orthopedic device into the joint space. The suture may be using a percutaneously inserted needle or other type of needle-based delivery instrument. The resilient elongate orthopedic device may be restrained to a reduced profile that permits minimally invasive implantation, but assume an enlarged profile when positioned at an implantation site.

Abstract: An arthroplastic implant is for a basilar joint of a hand of a patient. The arthroplastic implant may include a body having a distal surface and a proximal surface opposite therefrom with the distal surface to be positioned adjacent a first metacarpal bone at the basilar joint of the hand of the patient. The arthroplastic implant may also include an anchor peg extending outwardly from the body to anchor the body within the basilar joint of the hand of the patient.

Abstract: A wrist replacement prosthesis includes a radial brace member to be secured to the radius bone, an ulna brace member to be secured to the ulna bone, and an articular member to be secured to the carpal bones, the radial brace member and articular member having wide ellipsoidal surfaces, and the ulnar brace member having a ball at one end which is supported by the radial brace member.

Abstract: A surgical implant device capable of conforming to a variety of surface topographies facilitates the growth and regeneration of site to which the device is applied. The device employs a plurality of elongate members supporting a column of discrete, rotatable elements in contact with each adjacent element. Anchor plates secure the respective ends of the elongate members, such anchor plates attachable to bone. The implant device provides and ordered array of individually rotatable elements to form a surface that permits bodily fluids to pass therethough.

Abstract: A modular proximal interphalangeal joint implant assembly including a first stem component, a second stem component, and an articulation assembly. The first stem component includes a first locking device and is operable to be implanted in a proximal phalanx bone. The second stem component includes a second locking device and is operable to be implanted in a middle phalanx bone. The articulation assembly includes a first articulation component operable to be removably attached to the first locking device and a second articulation component operable to be removably attached to the second locking device. The articulation assembly can include a semi-constrained articulation assembly or a constrained articulation assembly.

Abstract: Joint replacement spacers that fully seat against the cut surface of a bone while remaining free to move on the cut surface within prescribed limits; methods of joint replacement using such spacers.

Abstract: Devices and treatments for various joint conditions include a resilient elongate orthopedic device inserted into a joint space using a suture. The suture is passed through the joint space and used to pull the orthopedic device into the joint space. The suture may be using a percutaneously inserted needle or other type of needle-based delivery instrument. The resilient elongate orthopedic device may be restrained to a reduced profile that permits minimally invasive implantation, but assume an enlarged profile when positioned at an implantation site.

Abstract: An arthroplastic implant for a basilar joint of a hand of a patient includes a body having a distal surface and a proximal surface opposite therefrom. The distal surface is to be positioned adjacent a first metacarpal bone at the basilar joint of the hand of the patient. The arthroplastic implant also includes a shield extending outwardly from the distal surface of the body to shield adjacent portions of the first metacarpal bone and a second metacarpal bone of the hand of the patient.

Abstract: A wrist implant requires minimal resection of the distal radius and preserves the sigmoid notch and articulation with the head of the distal ulna. The wrist implant generally includes a radius portion, a carpal portion and a carpal ball. The wrist implant includes a primary articulation and a secondary rotational articulation. The primary articulation occurs between the radius portion and the carpal ball. The secondary articulation occurs between the carpal ball and the carpal portion.

Abstract: Generally, an intra-osseous fusion system which provides an implantable intra-osseous member and a method of implanting the intra-osseous member for bone on growth which retains an amount of digit curvature.

Abstract: A subtalar implant device includes a rounded end cap region, a threaded region having threads, and a core having a first end, a second end, a core exterior and a longitudinal axis. The threads can have a shape that varies between the first end and the second end of the core. For example, the threads can include an outer edge having an edge width that varies. Further, the threads can include a thread depth that can vary between the first end and the second end of the core. A thread radius of curvature varies at a different rate than a core radius of curvature. The core can define one or more core apertures that extend through the core at various angles relative to the longitudinal axis. In one embodiment, two core apertures are positioned at an angle greater than zero degrees relative to each other.

Abstract: An orthopaedic device (1) for the mobile connection of a first and a second bony segment (4, 5) of an organic device for cooperating with or substituting a natural articulation comprising a first working surface (9) related to the first cooperating segment (4) with a second working surface (10) related to the second bony segment (5) in order to constrain (guide) the relative motion between the said bony segments (4, 5); the first and the second working surface (9, 10) are respectively practically shaped as the axodes of the relative motion of a first and a second link of a linkage practically equivalent to the natural articulation; in particular the first and the second link are corresponding, in the linkage, to the first and the second bony segment (4, 5).

Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.

Abstract: A soft, expandable, implantable device sized for spacing between small bones comprising a first smooth surface on which a first small bone may slide. Implant (700) includes an opening (704) (passage) extending through the device for promoting fibrotic development through the opening from a direction from both thumb metacarpal (202) and trapezium (204). Passage (704) is optionally distally positioned from a one-way inflation valve (706) included inside an inflation port (702) substantially limiting possible damage to the device due to the insertion pressure of an expansion fluid. An inflation cannula and/or needle may be attached to inflation port (702) and inflation valve (706) for introducing the expansion fluid into the device. Implant (700) is inserted in a deflated mode and is positioned so that thumb metacarpal (202) abuts distal side (703) of the device when expanded and trapezium (704) abuts proximal side (701).

Abstract: Basal thumb joint implant has a head with a smooth, generally hemispherical, medio-proximally directed, articulating surface, and a generally abrupt, distally directed, truncation thereto; and a stem attached to the head, which arises from the truncation of the head and includes at least one of the following features: A) a general angle of attachment to the head which is acute in relation to the truncation of the head; B) a flanged cross-sectional stem profile; C) an inwardly curved stem; D) an eccentric head attachment site for the stem. The implant may be one-piece or modular in construction.