Knee prosthesis

Details Knee prosthesis Knee prosthesis

1985-07-25

1987-12-22

Apley, Richard J.

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

Implantable prosthesis

Bone

A61F 238

Patent

active

047144734

ABSTRACT:
An improved prosthesis particularly for use as a knee joint is designed for secure ingrowth attachment to cancellous bone and adjacent tissue without use of bone cement. The prosthesis comprises a tibial component and a femoral component shaped to accommodate articulatory knee joint motion and each including a base surface adapted for enhanced bone ingrowth attachment to cancellous bone of a resected tibia and femur, respectively. The base surface of each component includes an extended surface area protruding into a region of cancellous bone and subdivided into a plurality of attachment zones coated with a selected porous bone ingrowth material, wherein these attachment zones are bounded by uncoated shallow channels for draining fluid from the attachment interface to the exterior of the prosthesis. In addition, each base surface includes one or more relatively thin anchoring fins extending in a medial-lateral direction for improved locking against component rotation while avoiding stress shielding of the ingrowth attachment interface, thereby achieving improved ingrowth fixation.

REFERENCES:
patent: 3715763 (1973-02-01), Link
patent: 3728742 (1973-04-01), Averill
patent: 3774244 (1973-11-01), Walker
patent: 3816855 (1974-06-01), Saleh
patent: 3837009 (1974-09-01), Walker
patent: 3840904 (1974-10-01), Tronzo
patent: 3849805 (1974-11-01), Leake et al.
patent: 3868730 (1975-03-01), Kaufer et al.
patent: 3869731 (1975-03-01), Waugh et al.
patent: 3879767 (1975-04-01), Stubstad
patent: 3896502 (1975-07-01), Lennox
patent: 3909854 (1975-10-01), Martinez
patent: 3916451 (1975-11-01), Buechel et al.
patent: 3919723 (1975-11-01), Heimke et al.
patent: 3945053 (1976-03-01), Hillberry et al.
patent: 3964106 (1976-06-01), Hutter, Jr. et al.
patent: 3975778 (1976-08-01), St. Newton, III
patent: 3977026 (1976-08-01), Battault
patent: 3986212 (1976-10-01), Sauer
patent: 4000525 (1977-01-01), Klawitter et al.
patent: 4011602 (1977-03-01), Rybicki et al.
patent: 4016606 (1977-04-01), Murray et al.
patent: 4017911 (1977-04-01), Kafesjian et al.
patent: 4038703 (1977-08-01), Bokros
patent: 4052754 (1977-10-01), Homsy
patent: 4055862 (1977-11-01), Farliag
patent: 4081866 (1978-04-01), Upshaw et al.
patent: 4085466 (1978-04-01), Goodfellow et al.
patent: 4127902 (1978-12-01), Homsy
patent: 4136405 (1979-01-01), Pastrick et al.
patent: 4164794 (1979-08-01), Spector et al.
patent: 4166292 (1979-09-01), Bokros
patent: 4168326 (1979-09-01), Broemer
patent: 4177524 (1979-12-01), Grell et al.
patent: 4193140 (1980-03-01), Treace
patent: 4205400 (1980-06-01), Shen et al.
patent: 4206516 (1980-06-01), Pilliar
patent: 4207627 (1980-06-01), Cloutier
patent: 4209861 (1980-07-01), Walker et al.
patent: 4213209 (1980-07-01), Insall et al.
patent: 4215439 (1980-08-01), Gold et al.
patent: 4217666 (1980-08-01), Averill
patent: 4224696 (1980-09-01), Murray et al.
patent: 4224697 (1980-09-01), Murray et al.
patent: 4231120 (1980-11-01), Day
patent: 4231122 (1980-11-01), Koeneman
patent: 4234972 (1980-11-01), Hench et al.
patent: 4249270 (1981-02-01), Bahler et al.
patent: 4262368 (1981-04-01), Lacey
patent: 4272855 (1981-06-01), Frey
patent: 4301553 (1981-11-01), Noiles
patent: 4307472 (1981-12-01), Morris
patent: 4309488 (1982-01-01), Heide et al.
patent: 4309778 (1982-01-01), Buechel et al.
patent: 4328593 (1982-05-01), Sutter et al.
patent: 4351069 (1982-09-01), Ballintyn et al.
patent: 4355428 (1982-10-01), Deloison et al.
patent: 4355429 (1982-10-01), Mittelmeier et al.
patent: 4385405 (1983-05-01), Teinturier
patent: 4430760 (1984-02-01), Smestad
patent: 4430761 (1984-02-01), Niederer et al.
patent: 4462120 (1984-07-01), Rambert et al.
patent: 4470158 (1984-09-01), Pappas et al.
patent: 4479271 (1984-10-01), Bolesky et al.
patent: 4501031 (1985-02-01), McDaniel et al.
patent: 4549319 (1985-10-01), Meyer
Brochure from Intermedics, on the "APR Universal Hip System", 1984.
"Key References in Biomaterials: Bone/Biomaterial Interface in Orthopedic Joint Implants", from Journal of Biomedical Materials Research, vol. 18, 577-599, (1984), John Wiley & Sons, Inc.
Intermedics Orthopedics Brochure, 1984.
Technical Monograph, 1984, by Roy D. Bloebaum, Lawrence D. Dorr, and Diane Moynes.

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