Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1996-11-06
1998-07-21
Polutta, Mark O.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 242
Patent
active
057829276
ABSTRACT:
A joint prosthesis for replacement of the metacarpal-phalangeal (MP) joint of a human finger which includes a metacarpal element with a stem for reception into the medullary cavity of the metacarpal bone and a generally ball-shaped articular head and a phalangeal element with a stem for reception into the medullary cavity of the proximal phalangeal bone and a generally socket-shaped head which conforms to the ball-shaped head. The metacarpal element's articular head has reliefs located on each of its two lateral sides so as to provide a generally free path for the collateral ligaments. The phalangeal element's articular head has a dorsal protrusion, that resists subluxation-dislocation of the phalangeal bone, and grooves in its concave surface which allow biological fluids access to the inner regions of the articulation contact surfaces.
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Klawitter Jerome J.
Ogilvie William F.
Ascension Orthopedics, Inc.
Polutta Mark O.
Snow Bruce E.
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