191 results about "Metatarsal bones" patented technology

A fixation device for reduction of bone segments of the metatarsus comprises a fixation plate that is sized and configured to generally conform to the shaft of the metatarsus between the head and base. The plate includes a head end that is wider than the base end, with curved side edges that gradually taper between the two ends and produce a necked-down portion between the two ends that narrower than either end. The profile of the plate is further reduced by curving the plate across its width and along the entire length of the plate and by forming the plate at a minimal thickness of about 0.9 mm. The plate is provided with a plurality of screw holes staggered across the length and width of the plate. In the preferred embodiment, two screw holes are provided at each end and a group of four screws are provided adjacent each of the side edges. The screws holes are staggered to avoid conflict of the screws within the bone regardless of how many screws are used to secure the plate to the bone.

A fixation plate for use in fusion of the metatarsal-phalangeal joint includes a distal portion configured to engage the metatarsus bone and a proximal portion configured to engage the phalanx bone. The distal portion is elongated with several screw defined therethrough along a longitudinal axis passing through the portion. The proximal portion includes a plurality of screw holes that are all offset relative to each other along axes parallel and perpendicular to the longitudinal axis. No more than one of the screw holes in the proximal portion is aligned with the longitudinal axis. The fixation plate is contoured to cup the bones of the MTP joint. The plate may include an intermediate portion that is bent at a pre-determined dorsi-flexion angle.

A device, method, and system for treatment or fixation of a fractured, damaged, or deteriorating bone or bones in a mid-foot region. The device comprising an implant with both proximal and distal fastener holes, along with fastener slots in a central elongated body, for securing the implant to the appropriate osseous cortical structures of the foot. The method for treatment or fixation of fractured, damaged, or deteriorating bones in the medial column of the foot with use of a device such as an intramedullary nail that attaches to either the talus or first metatarsal bones to secure the medial cuneiform and navicular bones in place.

An insole for a shoe includes a body that is configured to fit within the shoe. A heel recess in a heel area of the insole extends partially through the body. A metatarsal opening in a metatarsal area of the insole extends completely through the body. A heel insert is secured in the heel recess, and a metatarsal insert is secured in the metatarsal opening. A method is disclosed for making an insole by mixing a reactive resin with a quantity of cork particles to form a body mixture. The mixture is injected into an injection mold to form a body portion of the insole that includes a heel recess and metatarsal opening. A heel insert and metatarsal insert are molded and provided in the heel recess and metatarsal opening, respectively.

A surgical jig for use in performing a scarf osteotomy on the first metatarsal of the forefoot includes a cutting guide that is adapted to guide a cutting implement relative to a reference surface that is adapted to be placed against the plantar aspect of a forefoot. The jig has guide surfaces for guiding both the longitudinal cut and the transverse cuts of the operation. The jig is selected from one in a set of jigs by an overlay template, through which an X-ray of the forefoot can be viewed.

Deformities present on the end of a bone, for example the end of the metatarsal bone making up part of the metatarsocuneiform joint, can lead to deformities such as bunions. These deformities are treatable with an implant that comprises a plate with a wedge extending perpendicular from the plate. Following removal of cartilage from the joint, deformed portions at the end of the bone are removed and the wedge is inserted in the joint and held in place when the plate is attached to the bones flanking the joint. This effectively fuses the two bones together. The wedge can be shaped in various ways depending on the particular deformity present.

A removable ball of the foot insert for placement into footwear at a position in correspondence with a forefoot portion of the footwear includes a substantially planar member made from a viscoelastic gel, the planar member including a lower surface and an upper surface, and a plurality of parallel, spaced apart, sinusoidally shaped spring walls formed from a viscoelastic gel and extending from the lower surface of the planar member at a predetermined area corresponding to a ball of the foot when the insert is inserted into the footwear, for separating bones of second and third metatarsals of the foot, the spring walls having heights that generally decrease outwardly from a center of the predetermined area, and the viscoelastic gel of the planar member having a hardness greater than a hardness of the viscoelastic gel of the spring walls.

A compression apparatus including an expandable body configured for disposal about a foot. A strap extends from the body. The strap is configured for disposal about the foot adjacent an ankle. The strap has a first layer configured to engage an outer surface of the foot adjacent the ankle, a second layer and a third cushion layer disposed therebetween. The body may include a metatarsal portion. The first layer and the second layer may be configured to provide a barrier to the third cushion layer. The first layer may be configured to prevent engagement of the third cushion layer with the outer surface of the foot.

An orthotic insole assembly including a semi-rigid cradle extending forward from the metatarsal region of the foot to the heel, wherein medial and lateral sidewalls extend upward from the cradle. The cradle includes an aperture in the area of heel impact wherein a heel plug is disposed within the aperture. A resilient, foam, cushioning layer overlies the cradle and the heel plug. A riser is connected to the cushioning layer to provide an elevated region in the area of the first metatarsal.

A footwear sole includes a footwear sole base with a forefoot region, a mid-foot region, and a heel region. A lower heel cushion is positioned in the heel region. An upper heel cushion is positioned over the lower heel cushion. A shank with reinforcement ribs is positioned in the mid-foot region. A forefoot stabilizer is positioned in the forefoot region. The forefoot stabilizer includes an axial spine and lateral ribs to facilitate forward movement and lateral support. The footwear sole may be used in combination with a foot bed with a flexible base and a rigid orthotic structure. The foot bed may include elastomer cushioning domes at heel and metatarsal impact points. The foot bed may include a liner with moisture wicking and anti-microbe properties.

A fracture fixation system particularly useful for bones of the hand and foot is disclosed. The system uses curved shape-memory alloy (e.g., Nitinol) wires that have a predetermined radius of curvature to accommodate different sized bones. These shape-memory alloy wire forms can be inserted into phalanx, metacarpal or metatarsal bones via a percutaneous technique. The technique uses small skin incisions; a specialized drill guide that has holding K-wires to maintain fixation of the drill guide to the bone so that it does not lose the insertion point; a specialized drill as well as a specialized wire cutter and advancement tool to make sure that the level of the wire is below the level of the outer cortical bone. Shape-memory alloy (e.g., Nitinol) based wires with a pre-bent curve have an advantage over the typical standard K-wire in that they can spring back to their predetermined memory shape when inserted into the intramedullary canal of the bone and heated, i.e., a more aggressive curve. By increasing their bending or flexion to increase the arc of curvature, this allows fixation points for the wire, essentially locking it to bone.

This invention elevates the midsection of the foot when shoeless, addressing congenital flatness, or lapsing or pronation in the arch. The device, which can be constructed of various materials, does not continue to the metatarsus or heel, and is attached to the foot by lateral straps or stretchable bands, either singular or in two pieces closed by a snap, buckle, velcro or similar fastener, and adding a heel or, ankle strap or band if greater stability is desired. It may be worn inside or over stockings, and feature assorted shapes, textures, coloration, and decoration. The invention can also serve as an orthotic for barefoot runners or dancers by means of longitudinal extension, with openings under the metatarsus and heel so these areas may touch the ground or floor, and employ additional straps or bands. This device is contraindicated as a diagnostic or therapeutic aid, without the intent of medical application.

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.

An insole having a top sheet, a base layer, a forefoot pad, a heel cushion, and stability cradle. The forefoot pad can be made a blown EVA or other material, and the heel cushion can be made of a clear TPR, soft polyurethane or blown EVA. A heel cup surrounds the exterior back by a heel cup, and a heel pod opening and midfoot pod opening is located in the stability cradle for allowing placement of heel pads and midfoot pads in a replacement manner. There is also a soft metatarsal raised dome on the top (foot contact) surface of the insole which would be directly above the metatarsal midfoot area.

The present invention provides a prosthesis for implantation at the proximal articular surface of a proximal phalange, of a human great toe. The prosthesis comprises a base portion having a generally concave bearing surface shaped to articulate with the distal articular surface of a metatarsal bone, and a flat surface opposite the bearing surface for emplacement against a resected surface of the proximal phalange of the great toe of the human subject. A stem extends distally from the flat surface of the base portion, for implantation in the intramedulary canal of a proximal phalange of the great toe of the human subject. The stem has a generally frustoconical shape, with a substantially oval wide end at the flat surface of the base portion, tapering to a substantially circular end. The generally frustoconically shaped stem has a longitudinal axis that is inclined at an anatomical angle, of about 94° to the base portion, to align with the intramedulary canal of a proximal phalanx of the great toe of the human subject.

An embodiment of footwear having the orthotic foot device and method of making it is disclosed herein. The device provides support for the foot when used in footwear, in certain regions of the foot such as in the arch and metatarsal regions, in a manner that is very comfortable and yet supportive to the wearer. The embodiment of the orthotic foot device may provide at least one secure, but easily adjusted support component for a region of the foot such as the arch and metatarsal regions. The support component may be removably attached to a cushioned supportive footbed or chassis to provide an increased walking/running comfort and performance. It will become apparent to those skilled in the art that at least one of the support components may be fixedly or integrally attached to the footbed or chassis.

A supportive device for the transverse metatarsal arch of the foot is comprised of a fabric-coated elasticized strap enclosing a specially designed pad of rubberized material. This strap is wrapped snugly around the transverse metatarsal arch with the enclosed pad strategically placed to provide optimum arch support, metatarsal relief and secured by a hook and loop type fastener strip.

Footwear comprising a sole. The sole has a heel section for supporting a heel of the foot. The heel section has medial and lateral regions. At least a portion of the lateral region has a first compressive resilience for attenuating the shock of impact to the wearer during running and walking. Further, the sole has an arch section forward of the heel section for supporting an arch of the foot. The arch section also has medial and lateral regions. At least a portion of the lateral region of the arch section has the first compressive resilience and at least a portion of the medial region of the arch section has a second compressive resilience harder than the first compressive resilience for providing firm support for the foot during running and walking. In addition, the sole has a forefoot section forward of the arch section for supporting a ball of the foot including first, second, third, fourth and fifth metatarsal heads and associated metatarsal necks, proximal phalanges and metatarsal phalangeal joints. The forefoot section has a first region for supporting the first, second, third, fourth and fifth metatarsal heads, associated phalanges and metatarsal phalangeal joints, and the metatarsal neck associated with the fifth metatarsal head and a second region for supporting at least one of the metatarsal necks associated with the second and third metatarsal heads. The first region of the forefoot section has the first compressive resilience and the second region of the forefoot section has the second compressive resilience.

A stabilization brace presents a compressive, sock-like body for a compressive fit about the ankle joint and forefoot. A pair of force straps extends from the metatarsal heads and is wound in a preferred manner along opposed regions of the foot and ankle to offer countervailing forces therealong. First and second closure systems secure the body to the foot and offer circumferential support thereto. The brace resists excessive supination and pronation of the foot, ankle joint and underlying structures. Three embodiments of the brace are shown wherein one end of the force straps are attached to a zone adjacent the metatarsals as well as bifurcated ends attached to the metatarsal zone and a second zone spaced therefrom. A third embodiment presents bifurcated ends attached at one zone adjacent the metatarsals and another zone of the rear of the Achilles which presents an enhanced heel locking mechanism.