Prosthetic acetabulum

Details Prosthetic acetabulum Prosthetic acetabulum

1989-08-11

1990-04-24

Frinks, Ronald L.

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

Implantable prosthesis

Bone

623 18, A61F 232

Patent

active

049196774

ABSTRACT:
The turns of the self-tapping screwthread formed on the outside surface of the metal hemispherical shell have front portions of constant thickness which extend over one third of the cross sectional length of the thread turn. The remainder of the thread turns is wedge-shaped. The shape of the thread turns facilitates the cutting in of the screw thread when the hemispherical shell is being implanted.

REFERENCES:
patent: 3977026 (1976-08-01), Battault
patent: 4662891 (1987-05-01), Noiles
patent: 4715859 (1987-12-01), Schelhas et al.
patent: 4822367 (1989-04-01), Stuhmer
M. Ungethum, et al., Biomechanical Aspects of Non-Cemented Prosthetic Hip Sockets, Medizinisch Orthopadische Technik, vol. 106, No. 6, Nov./Dec. 1986, Stuttgart, Germany.

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