Subtalar arthroereisis implant apparatus and treatment method
OwnerKent A. Feldmaninventor
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Abstract
A device and method of manufacturing and implanting a custom subtalar arthroereisis implant having side surfaces which are mirrored in topography with the sinus tarsi of a patient. The implant is formed using images of the patient standing in a weight bearing position with their sinus tarsi and the surrounding bone structure in an anatomically correct alignment. Once implanted, the implant urges and maintains the anatomically correct alignment thereby minimizing any patient tendency for abnormal motion between said patent's talus and calcaneus.
Claims8
A subtalar arthroereisis implant, for correcting anatomical alignment of a patient's ankle bone structure comprising:
- an implant configured for insertion to an implanted position within a void, said void having a shape defined by a topography of all of a plurality of bone surfaces surrounding an entire area of an anatomic space of a sinus tarsi cavity of a foot of a patient while in a weight bearing position;
- said implant having a monolithic body, said monolithic body formed of compressible material, said monolithic body having a circumferential exterior surface extending from a first end of said monolithic body to a distal end of said monolithic body;
- a plurality of facets formed into said circumferential exterior surface defining a topography of said circumferential exterior surface of said monolithic body of said implant;
- said topography defined by said plurality of facets forming said circumferential exterior surface of said monolithic body to a surface topography which is a mirror image of said shape of said void defined by said topography of all of said plurality of bone surfaces surrounding said entire area of said anatomic space;
- and
- said monolithic body is positionable to an implanted position with said circumferential exterior surface of said monolithic body anatomically mated in respective contacts of respective said plurality of facets against respective said bone surfaces of all of said plurality of bone surfaces surrounding said entire area of said anatomic space.
Dependencies are inferred from the claim text.