231 results about "Calcaneus" patented technology

A total ankle replacement system, novel surgical method for total ankle replacement, and novel surgical tools for performing the surgical method are described. The total ankle replacement system includes the calcaneus in fixation of a lower prosthesis body, thereby significantly increasing the amount of bone available for fixation of the lower prosthesis body and allowing the lower prosthesis body to be anchored with screws. The total ankle replacement system further includes a long tibial stem which can also be anchored into the tibia with, for example, screws, nails, anchors, or some other means of attachment. The novel surgical arthroscopic method allows introduction of ankle prostheses into the ankle joint through an exposure in the tibial tubercle. Various novel surgical instruments, such as a telescoping articulating reamer and a talo-calcaneal jig, which facilitate the novel surgical method, are also described.

A soccer shoe includes an upper and a cleat assembly coupled to the upper. The cleat assembly further includes a medial support bar located on the medial side and a lateral support bar located on the lateral side. A portion of the cleat assembly located near a midfoot section of the medial support bar is stiffer than a portion of the cleat assembly located near a midfoot section of the lateral support bar. The medial support bar extends approximately from a region corresponding to the rear of the calcaneous of a properly fitted wearer to approximately the head of the first metatarsal of the wearer. The lateral support bar extends approximately from a region corresponding to the rear of the calcaneous of the wearer to approximately the head of the fifth metatarsal of the wearer. The cleat assembly is bonded to a cushioning midsole formed from heated and compressed ethylene vinyl acetate foam. The upper lacks a full-length lasting board and is bonded directly to the cushioning midsole. A lining covers a padded collar and extends inside a foot-receiving region of the shoe, with a portion of the foot-receiving region around a wearer's heel being substantially free of discontinuities.

A soccer shoe includes an upper and a cleat assembly coupled to the upper. The cleat assembly further includes a medial support bar located on the medial side and a lateral support bar located on the lateral side. A portion of the cleat assembly located near a midfoot section of the medial support bar is stiffer than a portion of the cleat assembly located near a midfoot section of the lateral support bar. The medial support bar extends approximately from a region corresponding to the rear of the calcaneous of a properly fitted wearer to approximately the head of the first metatarsal of the wearer. The lateral support bar extends approximately from a region corresponding to the rear of the calcaneous of the wearer to approximately the head of the fifth metatarsal of the wearer. The cleat assembly is bonded to a cushioning midsole formed from heated and compressed ethylene vinyl acetate foam. The upper lacks a full-length lasting board and is bonded directly to the cushioning midsole. A lining covers a padded collar and extends inside a foot-receiving region of the shoe, with a portion of the foot-receiving region around a wearer's heel being substantially free of discontinuities.

A prosthesis suited for orthopedic implantation possesses a multi-piece stem component that supports an artificial joint surface that can articulate with another artificial joint surface in various ways. The prosthesis can be assembled in a snap fit and / or interlocking fashion that provides positive locking means without the use of screws or other fasteners. The prosthesis can accommodate fitment of a plastic joint surface made, e.g., from ultra high molecular weight polyethylene. The prosthesis is well suited for use in an ankle replacement system that can be installed using minimally invasive intramedullary guidance established with respect to the major axis of the tibia by minimally invasive access through the calcaneus, through an incision in the bottom of the foot. The prosthesis makes possible the installation of a total ankle system using minimally invasive anterior access to the ankle joint for making bony cuts and to install prosthesis components.

A prosthesis suited for orthopedic implantation possesses a multi-piece stem component that supports an artificial joint surface that can articulate with another artificial joint surface in various ways. The prosthesis can be assembled in a snap fit and / or interlocking fashion that provides positive locking means without the use of screws or other fasteners. The prosthesis can accommodate fitment of a plastic joint surface made, e.g., from ultra high molecular weight polyethylene. The prosthesis is well suited for use in an ankle replacement system that can be installed using minimally invasive intramedullary guidance established with respect to the major axis of the tibia by minimally invasive access through the calcaneus, through an incision in the bottom of the foot. The prosthesis makes possible the installation of a total ankle system using minimally invasive anterior access to the ankle joint for making bony cuts and to install prosthesis components.

An implant for use in ankle arthroplasty is provided. The implant includes a first member for cooperation with the tibia and a second member for cooperation with the talus. The second member is operably associated with the first member. The implant also includes a third member rigidly removably connectable to the second member. The third member includes a portion of the third member for attachment to the calcaneous. The third member is adapted to provide for a first position in the calcaneous when said third member is in a first relative position with respect to the second member is adapted to provide for a second position in the calcaneous when the third member is in a second relative position with respect to the second member.

An intramedullary screw and fixation system for intraosseous bone fusion of the subtalar joint includes a lag screw member, a reamer for reaming an internal surface of each of the calcaneus and talus medullary canals, and targeting guide assembly for alignment with the subtalar joint. The lag screw member includes an elongated body, a first threaded portion at a first end and a bulbous portion at a second end. The targeting guide assembly receives a cutting blade in an elongated rod for reaming the articulating surfaces of the calcaneus and talus intramedullary canals, where the cutting blade is inserted through a percutaneous incision into the elongated rod.

A shoe structure specifically designed to more securely fit a wider range of feet widths and proportions by providing an integrated resilient heel device in the rearfoot region of the upper. The heel device extends upward and rearward toward the back of the foot to avoid the bulbous end of the calcaneus but also to engage the area just above the heel bone. The heel device has opposing portions that are biased toward one another and provide a secure but comfortable engagement of the shoe onto the wearer's heel. The heel device is smaller than the size of the shoe into which it is incorporated to enhance the biasing effect of the opposing portions.

The invention comprises a lateral ankle fusion plate, a jig for use with the fusion plate and a method for ankle fusion of the joints between the tibia, the talus, and the calcaneus. In addition, a separate fusion screw from posterior to anterior through the calcaneal tuberosity into the distal tibia is useful and can be placed using the targeting jig of the invention. The plate includes a C-shaped stirrup portion that wraps the bottom of the calcaneus and is provided with a screw hole for a T-T-C-fusion screw. A C-shaped targeting jig is provided that interfaces with the plate to allow for placement of the calcaneal screw and has an additional attachment for placement of the independent fusion screw so as to avoid impingement with the plate, and plate screws. The invention also relates to a method of surgery that incorporates the use of the plate, the jig and the tibial / talar / calcaneal fusion screw for an arthrodesis of the ankle joint.

An arthroeresis-prosthesis (endorthosis) system comprising a sinus tarsi implant for the purpose of blocking abnormal motion between the talus and calcaneus while allowing normal motion and alignment. In a preferred embodiment, the prosthetic device is composed of a non-metallic, specialized medical grade polymer (polyetheretherketone-PEEK) that is a combination of a frustum of a right cine and an axially extending cylinder that is cannulated and partially structured on the exterior surface.

A calcaneus plate provided with two vertically-spaced plate sections, with corner-located screw holes. An intermediate wall connects the plate sections. An arcuate protrusion extends from the intermediate wall and contains an internal sliding mechanism for a compression screw. The sliding mechanism includes an arc-shaped compression hole with an elongated opening that includes a ridge upon with the compression screw head can slide.

An implant for use in ankle arthroplasty is provided. The implant includes a first member for cooperation with the tibia and a second member for cooperation with the talus. The second member is operably associated with the first member. The implant also includes a third member rigidly removably connectable to the second member. The third member includes a portion of the third member for attachment to the calcaneus. The third member is adapted to provide for a first position in the calcaneus when the third member is in a first relative position with respect to the second member and is adapted to provide for a second position in the calcaneus when the third member is in a second relative position with respect to the second member.

A method and apparatus for locating a calcaneus within a fracture walker is disclosed. The apparatus includes a locating device that has a notch formed therein, and an insole covering the locating device whereby the ankle forms a depression in the insole adjacent the notch when force is applied through the ankle on the insole.

The invention provides a calcaneus pre-operation returning frame. The calcaneus pre-operation returning frame aims at solving the problem that the returning of the broken calcaneus is difficult when an orthopedist performs operative treatment on the calcaneus. No holding force is performed on the calcaneus in the returning process, so that calcaneus returning operation is difficult, and the risk of faults also occurs. The technical scheme is that a supporting rod is composed of a talus supporting rod and a metatarsus supporting rod, the end of the talus supporting rod is connected with the metatarsus supporting rod through a connecting shaft, the talus supporting rod and the metatarsus supporting rod are fixed through an adjusting lock rod, and a drag rod is connected with a metatarsus supporting rod in a shaft connection mode and is connected with the metatarsus supporting rod through an elastic lock catch. The calcaneus pre-operation returning frame has the advantages that angle adjustment and length adjustment can be performed according to the actual use conditions, fine adjustment can be performed, and infection and the like caused by wound expansion cannot be caused. The calcaneus pre-operation returning frame further has the advantages of being high in control degree, low in cost, stable, reliable and high in practicality.

An arthroeresis-prosthesis (endorthosis) system comprising a sinus tarsi implant for the purpose of blocking abnormal motion between the talus and calcaneus while allowing normal motion and alignment. In a preferred embodiment, the prosthetic device is composed of a non-metallic, specialized medical grade polymer (polyetheretherketone-PEEK) that is a combination of a frustum of a right cine and an axially extending cylinder that is cannulated and partially structured on the exterior surface.

In a high heel shoe the heel seat is angled upwards approximately 3-5 degrees. The insole follows the natural shape of the inside long arch of the foot so that the medial arch of the foot is raised higher than the lateral arch of the foot in order to support the natural angle of the calcaneus, the navicular, the medial cuneiform and the first metatarsal. The angle of the heel seat is more acute relative to the ground looking from the lateral side of the shoe. A triangular dome bump on the insole of the shoe has one corner behind the second metatarsal head, a second corner behind the fourth metatarsal head and the final corner near mid-foot. Material is added beneath the sole of the insole so that the greatest thickness is beneath the metatarsal heads and tapers to zero at the end of the insole toward the toes.

An implant for causing fusion of bones in an ankle is disclosed. The implant, in a preferred embodiment, is a cannulated screw with threads at the leading end and threads at the trailing end having a a tibial component that interacts with the tibia, a calcaneus component that interacts with the calcaneus and a midsection extending between the tibial component and the calcaneus component. The implant is placed in a borehole formed in the tibia, talus and calcaneus and causes the tibia and talus to be moved into compressive contact with each other. As a result, the ends of the tibia and talus that have previously had the cartilage removed down to bloody bone are coapted together to allow fusion. In another embodiment of the invention, a middle threaded portion is placed between the tibial component and the calcaneus component. The middle threaded portion interacts with the talus to help add compressive force to the fusion process. The invention also includes a method for using the implant to fuse the bones of the ankle together. The method includes steps of producing an implant and then using the implant to apply compressive forces on the bones of the ankle. The invention in one embodiment also includes a method that uses images such as x-ray images preoperatively to determine the length and width of the disclosed implant or any other implant with each patient's unique anatomy will properly allow coaption of the ends of the prepared tibia and talus at the ankle joint. The implant is inserted from the bottom of the foot through a predetermined hole in the calcaneus which extends through the talus into the diaphysis of the tibia. When properly inserted and seated in the bones, the implant is locked by screws.

A prosthetic ankle assembly including an astragalar component with an upper articular surface that forms part of an ankle joint prosthesis and a lower surface with a shape adapted to engage an upper face of an astragalus. An astragalocalcanean rod is positioned in an astragalocalcanean channel extending from the lower face of the calcaneus to the upper surface of the astragalus. A first end of the astragalocalcanean rod is engage with the lower surface of the astragalar component and a second end of the astragalocalcanean rod is engaged with a lower region of the calcaneus. A distance between the second end of the astragalocalcanean rod is adjustable relative to the lower surface of the astragalar component to adjustably compress the calcaneus against the astragalus.

Provided is a system and method for providing a non-binding allograft subtalar joint implant for surgical implant into a person's foot proximate to the ankle. This system for repair includes at least one sterile non-binding allograft subtablar joint implant provided as a pre-formed allograft rod plug “ARP” having a diameter about equal to an average width of a canal between a person's talus and calcaneus bones, the ARP being resiliently compressible and flexible. When snuggly disposed between the person's talus and calcaneus bones, the ARP compresses during normal use of the person's foot and maintains the canal in an anatomically correct alignment and reduces a tendency for abnormal motion between the person's talus and calcaneus bones. An associated method of use is also provided.

Footwear includes a support member having an upper surface attachable to a foot, and two bulbous protuberances, a forward bulbous protuberance and rearward bulbous protuberance. Each of the protuberances has a curved outer contour, and protrudes from a lower surface of the support member on opposite sides of a latitudinal midline thereof, the latitudinal midline being halfway between a calcaneus support portion and a phalanges support portion of the support member. The forward bulbous protuberance is positioned medially offset with respect to a longitudinal centerline.

An ankle implant for use in ankle arthroplasty in total ankle replacement is provided. The implant includes an upper prosthesis anchored to the tibia and a lower prosthesis anchored to the talus. The lower prosthesis is operable associated with the upper prosthesis. The implant also includes a stem which is rigidly removably connected to the second member. The stem includes a portion for attachment to the calcaneous. The stem is be adapted to be in a first position in the calcaneous when the stem is in a first relative position with respect to the lower prosthesis, and to provide for a second position in the calcaneous when the stem is in a second relative position with respect to the lower prosthesis.

An intramedullary screw and fixation system for intraosseous bone fusion of the subtalar joint includes a lag screw member, a reamer for reaming an internal surface of each of the calcaneus and talus medullary canals, and targeting guide assembly for alignment with the subtalar joint. The lag screw member includes an elongated body, a first threaded portion at a first end and a bulbous portion at a second end. The targeting guide assembly receives a cutting blade in an elongated rod for reaming the articulating surfaces of the calcaneus and talus intramedullary canals, where the cutting blade is inserted through a percutaneous incision into the elongated rod.

A golf shoe has a stabilizing system consisting of an upper, a longitudinally extending midsole consisting of polyurethane, and a shank, wherein the midsole additionally to its longitudinal extension is extended vertically with a medial arch support structure, a lateral side support structure and a heel support structure. The structures are bonded to the outside of the upper and the medial arch support structure and the lateral side support structure extends upwardly and encircles eyelets for lacing of said upper. In order to further stabilize the golf shoe through all the phases of the swing of a golfer, the heel support structure (9) of said midsole (2) extends vertically to a point above the human calcaneus of a wearer, approximately to the point where the Achilles tendon is fixated. Midsole beams (14,23) are extending from the vertically extending heel support structure towards the vertical medial (8) and lateral (7) support structures.

An ankle implant for use in ankle arthroplasty in total ankle replacement is provided. The implant includes an upper prosthesis anchored to the tibia and a lower prosthesis anchored to the talus. The lower prosthesis is operable associated with the upper prosthesis. The implant also includes a stem which is rigidly removably connected to the second member. The stem includes a portion for attachment to the calcaneous. The stem is be adapted to be in a first position in the calcaneous when the stem is in a first relative position with respect to the lower prosthesis, and to provide for a second position in the calcaneous when the stem is in a second relative position with respect to the lower prosthesis.

A foot support for use with a human foot having a forefoot portion that supports the foot beneath the metatarsal heads and an arched midfoot portion that supports the foot beneath the metatarsal, cuneiforms, navicular, and cuboid bones and has a slope between a maximum height on the medial side of the foot support and a minimum height on the lateral side of the foot support. The foot support also includes a wedge fixed beneath the forefoot portion such that the maximum wedge height is positioned beneath the first metatarsal head and the minimum wedge height extends beneath the fourth metatarsal head. The foot support may optionally include a heel portion that supports the calcaneus and talus bones in a neutral, varus, or valgus positions.

A calcaneus plate provided with two vertically-spaced plate sections, with corner-located screw holes. An intermediate wall connects the plate sections. An arcuate protrusion extends from the intermediate wall and contains an internal sliding mechanism for a compression screw. The sliding mechanism includes an arc-shaped compression hole with an elongated opening that includes a ridge upon with the compression screw head can slide.

Disclosed is a frame-type pressurizing multipurpose guider. The frame-type pressurizing multipurpose guider is characterized by being composed of a main frame (1) and a guide barrel (2), a positioner (3) is arranged at one end of the main frame, triangular three toes (4) are arranged at the tail end of the positioner, a nut (5) is arranged at the other end of the main frame, an external thread (6) of the guide barrel is matched with the nut, a guide hole (7) is arranged in the guide barrel, and an inner hexagon groove (9) is arranged at the tail of the guide barrel. The frame-type pressurizing multipurpose guider has the advantages that according to knowledge of human anatomy, fractures of irregular bones of a human body are multiple fractures, especially fractures of scaphoid, calcaneus, astragali and the like; when fixing in the guide barrel is needed, a guide needle can be accurately implanted at one step, so that artificial osteoporosis caused by repeated implanting of the guide needle can be avoided to realize stable fixing of a screw. The frame-type pressurizing multipurpose guider is convenient for fracture pressurizing, pressurizing can be conveniently performed by the guider when the scaphoid fractures, separates, shifts, closes and restores for the convenience of early healing of fracture, and the frame-type pressurizing multipurpose guide is suitable for implanting of the guide needle of the guide barrel for various fractures of the irregular bones of the human body.

The invention belongs to the technical field of medical ultrasonography, and particularly relates to a cancellous bone diagnosis system based on ultrasound backscattering signal parameters. The system comprises an ultrasound backscattering signal acquisition module, a pretreatment module, a backscattering parameter calculation module and a cancellous bone state evaluation module. In the invention, an ultrasound transceiver probe is used to acquire ultrasound backscattering signals from the calcaneus of a human body; effective cancellous bone ultrasound backscattering signals are extracted; the calculation module is used to calculate four parameters, i.e. backscattering coefficient, apparent integration backscattering coefficient, spectral centroid shift and mean trabecular bone spacing; and finally, the health state of the cancellous bone is analyzed by comparing the four parameters with standard values stored in an internal standard database in the system. Compared with the traditional ultrasound transmission diagnosis system based on broadband ultrasound attenuation and ultrasound propagation velocity, the diagnosis system provided by the invention can obtain the complete information of the cancellous bone structure, thereby better detecting the health state of the cancellous bone of a human body.

A heel cup can be inserted into a shoe in order to define a posterior upward projection and lateral wings which surround the posterior and lateral faces of the calcaneum and which, through lateral notches, define a preferential deformation zone at, and in the direction of, the subtalar cone of the tibiotarsal joint. Moreover, a sufficiently-rigid connecting zone connects the posterior upward projection and the lateral wings, thus providing the shoe with good stability while enabling inversion and eversion foot movements. In this way, comfort is increased considerably, while the risk of articular injuries is reduced since the subtalar articulation is contained correctly upon reaching the limit thereof.