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Artificial toe joint

a technology toe bones, applied in the field of artificial toe joints, can solve the problems that current joints generally cannot compensate for metatarsal length variations

Inactive Publication Date: 2011-04-14
MORTON BALLARD ARTHROTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides an improved artificial toe joint that can be used for replacing the joint of the first metatarsal phalangeal joint or other toe joints. The joint has a stable structure and reduces stress on the ends of the bone by distributing the stresses along the bone, promoting improved long term success. The joint includes a low profile joint that contours the existing anatomical structures providing minimal bony disruption, reducing pain. The joint is flexible and can compensate for metatarsal length variations. The joint can be installed in place of previously installed joints that have failed or can modify existing fused joints."

Problems solved by technology

In addition it is important to note that current joints generally can not compensate for metatarsal length variations.

Method used

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Embodiment Construction

[0034]The invention and accompanying drawings will now be discussed in reference to the numerals provided therein so as to enable one skilled in the art to practice the present invention. The drawings and descriptions are exemplary of various aspects of the invention and are not intended to narrow the scope of the appended claims.

[0035]Turning now to FIG. 1, a perspective view of the bones of the proximal toe joint (the metatarsal phalangeal joint) is shown. The innermost toe joint (closest to the foot) is shown. The joint includes a metatarsal bone 10 and a phalange bone 14. The metatarsal bone 10 includes a rounded end 18 which, together with a depression 22 in the phalange bone 14 and the associated cartilage and tissue, forms the joint. The replacement of the toe joint may be necessitated by damage to the bones 10, 14 or to the cartilage and tissues of the joint. (While described in context of the first metatarsal phalangeal joint, the same anatomical presentations exist through...

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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.

Description

RELATED APPLICATIONS [0001]The application claims the benefit of U.S. Provisional Patent Application Ser. No. 60 / 889,195, filed Feb. 9, 2007, which is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION[0002]1. The Field of the Invention[0003]The present invention relates to an improved artificial toe joint. More specifically, the present invention relates to an artificial toe joint providing increased durability and reduced damage to the surrounding bone.[0004]2. State of the Art[0005]Toe joints such as the proximal metatarsal phalangeal joint, the proximal most toe joint of the foot, may become damaged from injury, etc. and may then be replaced. As a toe joint is damaged and deteriorates, symptoms may include loss of propulsion, transfer lesions, metatarsalgia (pain and inflammation of the ball of the foot), gait alterations, pain, etc. Indicators for joint replacement include: hallux limitus, hallux rigidus, hallux abducto valgus, rheumatoid arthritis, os...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/42
CPCA61B17/15A61F2310/00976A61B17/1624A61B17/1637A61B17/1682A61F2/4225A61F2002/30331A61F2002/30383A61F2002/30578A61F2002/30604A61F2002/30649A61F2002/30841A61F2002/4228A61F2002/4233A61F2220/0025A61F2220/0033A61B17/1615
Inventor MORTON, TROY N.
Owner MORTON BALLARD ARTHROTECH
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