Metatarsal phalangeal sesamoid prosthetic joint

Details Metatarsal phalangeal sesamoid prosthetic joint Metatarsal phalangeal sesamoid prosthetic joint

1997-01-13

1998-07-07

Jones, Mary Beth

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

A61F 242

Patent

active

057762031

ABSTRACT:
A prosthetic or artificial joint for replacing the natural metatarsal-phalangeal-sesamoid joint of the human toe has a phalangeal component that provides an articulating base platform for a metatarsal component to glide upon. The metatarsal component articulates against a gliding articular insert recessed in the base of the phalangeal component. The base of the phalangeal component has an elongated groove which divides the base into two portions which simulate the function of the sesamoids and offers mechanical advantage to the metatarsal component as it articulates. The groove also allows the flexor halucis brevis tendon to pass beneath the joint between the two artificial sesamoids.

REFERENCES:
patent: 3651521 (1972-03-01), Devas
patent: 4156296 (1979-05-01), Johnson et al.
patent: 4242759 (1981-01-01), White
patent: 4685919 (1987-08-01), Niwa et al.
patent: 5037440 (1991-08-01), Koening
patent: 5147386 (1992-09-01), Carignan et al.
patent: 5314486 (1994-05-01), Zang et al.
patent: 5458648 (1995-10-01), Berman et al.
patent: 5507821 (1996-04-01), Sennwald et al.

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