Abstract: A metatarsus adductus technique may involve cutting an end of one or both of a second metatarsal and an intermediate cuneiform to create a wedge-shaped opening between the end of the second metatarsal and the intermediate cuneiform. The method may further involve cutting an end of one or both of a third metatarsal and a lateral cuneiform to also create a wedge-shaped opening between the end of the third metatarsal and the lateral cuneiform. The second metatarsal and the third metatarsal can then be moved in a transverse plane to close a metatarsus adductus angle. Movement of the second and third metatarsal may close the wedge-shaped openings forming during bone cutting. With the second and third metatarsals appropriately realigned, the clinician can fixate the moved position of the second metatarsal and the third metatarsal.

Abstract: A device for the repair of a phalangeal joint comprises a first anchor, a second anchor, and a flexible spacer connecting the first and second anchors. The flexible spacer comprises a plurality of elongate fibers extending axially or criss-crossed between the first and second anchors and a polymeric matrix interspersed with the plurality of elongate fibers. Specifically, a prosthetic metatarsophalangeal joint device comprises a porous metallic metatarsal bone anchor, a porous metallic phalangeal bone anchor, and a polymeric spacer element comprising parallel or criss-crossed elongate fibers that can connect the metatarsal bone anchor and the phalangeal bone anchor. Methods for manufacturing prosthetic joint devices comprise using three-dimensional printing processes or molding processes.

Abstract: Disclosed are devices and related surgical methods for replacing some or all of a metatarsophalangeal joint of a patient.

Abstract: This disclosure describes exemplary screw and intramedullary devices that are better able to bring bone fragments into close proximity with each other, generate a compressive load, and maintain that compressive load for a prolonged period of time while healing occurs. The devices are made of a shape memory material.

Abstract: An implant is disclosed for the first metatarsophalangeal joint between the proximal phalange and the first metatarsal, the phalange moving in a sagittal plane perpendicular to a transverse plane. The implant includes a metatarsal component for securing against the distal end of the first metatarsal, the metatarsal component having an interfacing surface with a plurality of ridges and valleys. The implant further includes a phalangeal component for securing against the proximal end of the proximal phalange, the phalangeal component having an interfacing surface with a plurality of ridges and valleys, wherein the ridges of the interfacing surface of the metatarsal component are received by the valleys of the interfacing surface of the phalangeal component to provide for a full range of motion in the sagittal plane but impede motion in the transverse plane.

Abstract: The implant (1) includes at least two assembled components, at least a first component (3) is intended to be movable relative to at least a second component (2).

Abstract: Bone joint implants are described herein. The bone joint implants may comprise a metallic proximal platform configured for translational motion on the trapezium bone; a distal stem configured for intramedullary engagement with an end of the first metacarpal bone; an articulating coupling between the proximal platform and distal stem; and a proximal non-metallic wear surface and a distal non-metallic wear surface.

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: An implant is disclosed including an elongated threaded portion and a blade portion extending from the elongated threaded portion. The blade portion has a substantially cylindrical cross-sectional geometry and a taper defined by a plurality of blades.

Abstract: An apparatus and method for partial replacement of a metatarsophalangeal joint defined by a proximal face of a phalanx and a distal face of a metatarsal. The apparatus and method include a joint surface element and an elongated fusing element. The elongated fusing element has an end configured for tool engagement. The joint surface element has a generally concave surface configured to serve as the proximal face of the phalanx and a socket configured to engage the end of the elongated fusing element. The elongated fusing element fuses an interphalangeal joint when the apparatus is surgically implanted to prevent the deterioration of the interphalangeal joint.

Abstract: An implant for partially replacing surfaces that are subject to stresses includes a base that is inserted into an area removed from a bone. The base includes at least one surface for replacing the removed area of the bone and an adapter for receiving the base. The system for inserting the implant includes an angle determining system that includes a set of elliptical plates having different diameters to determine the cutting angle of the implant to be utilized to replace the surface of the bone. The system also includes an oscillating drill with hollow drills that have beveled tips.

Abstract: A surgically implantable metacarpal-phalangeal prosthetic replacement device having engaging male and female components. The male and female components each include a conically shaped shank. The male head portion connected to the first conically shaped shank includes two spaced-apart lateral condyles having convex condylar surfaces and an intercondylar portion juxtaposed between the first and second convex condyles. The female component has a female head portion connected to the second conically shaped shank. The female head portion includes spaced-apart lateral side portions having concave recessed load-bearing surfaces that are complementary to and moveably engage the convex condylar surfaces of the male component. The lateral sides portions further define an intermediate concave condylar recess that moveably engages the outwardly extending intercondylar portion.

Abstract: Prosthetic element for bone extremities such as fingers or toes, or teeth, comprising a trabecular part (20, 40, 120) and two end parts or stumps (12, 34, 112; 15, 39, 115).

Abstract: The invention comprises an implant having a first end section and a second end section, where the first end has a cancellous thread for implantation in a first section of bone and the second end includes expansion slots and barbs or wings, that that resist movement out of a second section of bone. These anchors expand outwardly when a rigid wire, such as a k-wire is fed through a central cannulation in the implant and either the wire expands in diameter or the cannulation decreases in diameter. The implant also includes a collar intermediate to the first and second section which includes one or more surfaces to allow the first section to be screwed into a first bone section.

Abstract: The present invention is a method and device for the correction and reduction of bone deformities, such as metatarsus primus adductus, using a plate body with winged buttresses and dorsal loop. The method and device can be affixed to a bone without any drilling or violating of the bone and can use a tethering technique which does not require drilling into the second metatarsal, nor does it require the placement of a prominent suture knot/button device medially along the first metatarsal.

Abstract: A toe bone implant for correction of toe bone deformities is provided. The toe bone implant includes a first portion having a socket portion. The toe bone implant also includes a second portion having a ball portion operatively connected to the socket portion. The toe bone implant is implanted in a joint such that the ball portion is configured to rotate a predetermined amount respective to the socket portion.

Abstract: A toe bone implant for correction of toe bone deformities is provided. The toe bone implant includes a first portion having a socket portion. The toe bone implant also includes a second portion having a ball portion operatively connected to the socket portion. The toe bone implant is implanted in a joint such that the ball portion is configured to rotate a predetermined amount respective to the socket portion.

Abstract: A multi-component hallux joint assembly incorporated into reconditioned end surfaces established between an upper metatarsal bone and an opposing lower proximal phalanx bone. A first component is anchored into a reconditioned end surface of the metatarsal bone and exhibits a first exposed support surface. A second component is likewise anchored into a reconditioned end surface of the proximal phalanx and exhibits a second exposed support surface. A spherical shaped intermediate component is supported in at least one of eccentric or rotational fashion between the first and second anchored components.

Abstract: A metatarsalphalangeal joint apparatus and method includes a metatarsal stem conformed to make cortical contact at the isthmus of a metatarsal bone and metatarsal head conformed to connect with the metatarsal stem. A phalangeal stem is conformed to make cortical contact at the isthmus of a phalangeal bone and a phalangeal base is conformed to connect with the phalangeal stem. A bearing surface is provided between the metatarsal head and the phalangeal base.

Abstract: A joint resurfacing prosthetic implant system is disclosed having an anatomically-shaped implant to replace a joint at a pedal digit or finger, including a head having an elliptical bearing surface disposed for engaging the end of an adjacent bone and a seating surface opposite the bearing surface, an elongated stem extending distally from the seating surface, and a flange on the circumference of the device and extending distally from the seating surface. The flange includes one or more portals and a removed section configured to avoid impinging upon a tendon during and after implantation of the prosthetic. A specialized tool is also provided to facilitate the resection of the bone for implantation. The specialized tool includes an elliptical template having a cutting edge and a center insert that is sized and configured to match a reamer used to bore into the bone for insertion of the implant.

Abstract: Devices and methods are disclosed for joint replacement.

Abstract: An intramedullary fixation device used in bone fixation and stabilization on a patient includes a longitudinally extending rigid body, a distal head disposed at a distal end of the body and sized for insertion into an intramedullary canal of a phalanx of the patient, the distal head having a central core portion and a plurality of extending distal wings radially projecting from the central core portion. A proximal head at a proximal end of the body is sized for insertion into an intramedullary canal of a phalanx of the patient. It has a central core portion and a plurality of proximal wings extending radially outwardly from the central core portion.

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 fixation device comprises a first clamping member having an adjustable clamping collar and a first curved support portion attached to the adjustable clamping collar. The first clamping member is adapted to receive a digit. The first curved support portion is adapted to support an inferior surface of a proximal phalanx of the digit. A distal member is adjustably attachable to the first clamping member. The distal member has a second curved support surface adapted to support an inferior surface of a distal phalanx of the digit and a curved distal end adapted to apply a compressive force in a proximal direction to a distal end of the distal phalanx.

Abstract: A method and device to correct hammertoes. The device includes an elongated device having a first threaded end with a first thread pitch and a second threaded end with a second thread pitch. A core connects the first and second threaded ends. When the implant is implanted into a joint and rotated about its longitudinal axis when mated with a driver, a target joint may be compressed using the first thread pitch on a distal bone in the joint and the second thread pitch on a proximate bone in the joint. The first and second thread pitches may be the same but in opposing directions, may be different but in the same direction, or may be different and in opposing directions.

Abstract: A toe bone implant for correction of toe bone deformities is provided. The toe bone implant includes a first portion having a socket portion. The toe bone implant also includes a second portion having a ball portion operatively connected to the socket portion. The toe bone implant is implanted in a joint such that the ball portion is configured to rotate a predetermined amount respective to the socket portion.

Abstract: A method and apparatus for correcting malformed joints, in particular the “hammer toe” contraction of the proximal interphalangeal joint. The disclosure comprises a two-component implant: a proximal phalanx component and a middle phalanx component. An endosseous stem on each component is inserted axially into the end of a respective host bone and, after insertion, the components are attached. The attached components are held together in various ways, for example a detent arm/aperture mechanism. Each component can be cannulated to allow for the passage of a kirschner wire, if necessary, to stabilize adjacent joints such as the proximal interphalangeal joint. The bones of the treated joint can be set to form a desired angle by adjusting the angle formed by the corresponding endosseous stems.

Abstract: A method and device to correct hammertoes. The device includes a bone implant having a screw with a threaded end and an annular sleeve with a first threaded portion to accept the threaded end of the screw and an expanding feature along a portion of the sleeve. When the implant is implanted into a joint through a percutaneous incision and the screw is rotated about its longitudinal axis when mated with the first threaded portion of the sleeve, the expanding feature may be expanded to anchor the implant in the respective bone and/or compress the joint.

Abstract: An implant is disclosed including an elongated threaded portion and a blade portion extending from the elongated threaded portion. The blade portion has a substantially cylindrical cross-sectional geometry and a taper defined by a plurality of blades.

Abstract: A surgically implantable device (1,10) made of a single piece of silicone, for joining phalanxes, metacarpus-phalanx or metatarsus-phalanx bones of the hand or foot in arthroplasty surgery, includes an enlarged central portion (2) formed by a thickened portion (5) having a rounded profile and provided with a canal (6) extending transversally in which a depression (7) is centrally formed, and by two elongated stem portions (3,4) which extend from the enlarged central portion (2), one opposed to the other. The device (1,10) is coated completely with at least one layer of turbostratic pyrolytic carbon less than or equal to 10 microns thick obtained by physical vapour deposition (PVD).

Abstract: Modular toe joint implant is a multi-piece device. Various sized piece(s), for example, head(s) and stem(s), can be provided in a kit or separately.

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 artificial joint comprising a first base element and a second base element that are pivotally connected to an intermediate body. A first protrusion extends from the first base element and is configured to be press-fitted into a screw device that is anchored to a first bone member, and a second protrusion extends from the second base element and is configured to be press-fitted into a screw device that is anchored to a second bone member. A related kit-of-parts is also described.

Abstract: The invention comprises an implant having a first end section and a second end section, where the first end has a cancellous thread for implantation in a first section of bone and the second end includes expansion slots and barbs or wings, that that resist movement out of a second section of bone. These anchors expand outwardly when a rigid wire, such as a k-wire is fed through a central cannulation in the implant and either the wire expands in diameter or the cannulation decreases in diameter. The implant also includes a collar intermediate to the first and second section which includes one or more surfaces to allow the first section to be screwed into a first bone section.

Abstract: A multi-component hallux joint assembly incorporated into reconditioned end surfaces established between an upper metatarsal bone and an opposing lower proximal phalanx bone. A first component is anchored into a reconditioned end surface of the metatarsal bone and exhibits a first exposed support surface. A second component is likewise anchored into a reconditioned end surface of the proximal phalanx and exhibits a second exposed support surface. A spherical shaped intermediate component is supported in at least one of eccentric or rotational fashion between the first and second anchored components.

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: An implant is disclosed including an elongate threaded portion and a blade portion extending from the elongate threaded portion. The blade portion has a taper terminating at a point.

Abstract: An implant is disclosed including an elongate threaded portion and a blade portion extending from the elongate threaded portion. The blade portion has a taper terminating at a point.

Abstract: In various embodiments, provided are implantable devices for replacing all or a portion of a metatarsophalangeal joint, comprising (i) a metatarsal component comprising a substantially convex bearing surface; or (ii) a phalanx component comprising a substantially concave bearing surface; or (iii) both. In various embodiments, also provided are methods of treating hallux valgus by replacing all or a portion of a metatarsophalangeal joint with one or more of the provided implantable devices.

Abstract: An artificial toe joint utilizes a ball in socket joint structure and arms or side walls which are exterior to the bone. The resulting joint provides improved strength and durability, and may be used to repair joints which are not suitable for installation of a prior art artificial joint.

Abstract: An implantable device includes a prosthetic, an anchor having an outer surface forming a threaded structure, and a retainer securing the anchor to the prosthetic, the retainer limiting the relative movement between the anchor and the prosthetic to rotation of the anchor relative to the prosthetic. A method of repairing the first metatarsophalangealjoint includes cutting away a portion of the tissue of the proximal phalanx to form a cavity, driving an anchor of the implantable device into the cavity to anchor the implantable device to the proximal phalanx, and while the anchor is being driven into the cavity, aligning a prosthetic of the implantable device to the phalanx such that the alignment of the prosthetic is maintained.

Abstract: A method for guiding a saw blade (22) during preparation of a metatarsal (14) of a foot (10) for a procedure, such as to receive a metatarsal bone implant (20), includes positioning a housing (242) substantially adjacent to the metatarsal (14), coupling an aligner (38) to the housing (242), and aligning a saw guide (30) of the housing (242). The housing (242) includes the saw guide (30) for receiving and guiding the saw blade (22). The foot (10) includes one or more additional metatarsals (142), and the aligner (38) is used to align the saw guide (30) relative to the metatarsal (14) by aligning the aligner (38) to be substantially parallel to and positioned over a longitudinal axis (40) of one of the additional metatarsals (142).

Abstract: An implant for metatarsal hemiarthroplasty according to embodiments of the present invention includes a resurfacing body configured to at least partially resurface distal and dorsal surfaces of an articular head of a metatarsus, the resurfacing body including a first side and a second side, the first side configured to articulate against a phalange associated with the metatarsus, the first side including a convex surface formed of ceramic, the second side configured to be fixed to the metatarsus, the second side including a concave surface from which protrude at least two immobilization elements, the at least two immobilization elements configured to interface with the articular head.

Abstract: The present invention comprises a metatarsal head implant comprising a generally convex, hollow portion that fits over the metatarsal head of the great toe, a serrated stem, and one or more locking screws. The implant of the present invention may work in conjunction with either the patient's existing phalanx or one-piece phalanx implants designed and/or manufactured independently from the metatarsal implant.

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: Implant devices, and method of using the same, are provided. The implant devices have a head and a stem. The head has an upper surface, an anterior surface, a posterior surface, a lateral surface and a lower surface. The anterior surface, the lateral surface, and the lower surface are approximately perpendicular to and intersect each other. The anterior surface and the posterior surface are approximately parallel to each other. Preferably, the upper surface has a general shape of at least a portion of a superior articular surface of a talus and at least a portion of a medial articular surfaces of a talus. The stem has a truncated conical portion and a cylindrical portion. The cylindrical portion is affixed to the lower surface of the head, and the truncated conical portion is affixed to the cylindrical portion.

Abstract: The present invention provides a cannulated hemi-implant with a base and a threaded stem for fixing the stem of the implant within a medullary canal of a phalanx or other bone in the foot. The implant includes a tri-part head capable of both cutting bone and self-threading, with bone forming the medullary canal of a phalanx of a human foot. The present invention also provides a hand tool which engages and rotates the implant within the medullary canal of the phalanx. The present invention further provides a method of surgically implanting the implant in the medullary canal of the phalanx or other bone.

Abstract: An artificial joint utilizes a ball in socket joint structure, an insert and arms or side walls which are exterior to the bone. The insert may be configured to adjust joint distance and/or correct joint angle by adjusting thickness and tapering. The resulting joint provides improved strength and durability, and may be used to repair joints which are not suitable for installation of a prior art artificial joint.

Abstract: An artificial toe joint utilizes a ball in socket joint structure and arms or side walls which are exterior to the bone, the side walls extending around depressions in the metatarsal bone or phalangeal bone, respectively so as to not interfere with sesamoid bones or the attachment of tendons. The resulting joint provides improved strength and durability, and may be used to repair joints which are not suitable for installation of a prior art artificial joint.

Abstract: An artificial toe joint utilizes a ball in socket joint structure and arms or side walls which are exterior to the bone. The resulting joint provides improved strength and durability, and may be used to repair joints which are not suitable for installation of a prior art artificial joint.