Wrist prosthesis

Details Wrist prosthesis Wrist prosthesis

1978-02-23

1979-12-18

Frinks, Ronald L.

Surgery

Truss

Pad

128 92C, A61F 124

Patent

active

041786408

ABSTRACT:
A prosthesis for the wrist joint and other joints which includes a carpal component having a base for cooperation with a radial component. The base is formed in the shape of a half-toroid, each end of the toroid integrally forming an intra-medullary pin for insertion into the medullary canal of the metacarpals with acrylic cement or equivalent gap-filling medium. The radial component of the prosthesis has a seat which is generally concave for receiving a side of the base of the carpal component. The seat includes a pair of adjacent concave surfaces tapering into cylindrical shafts, the toroidal base located between the shafts. A ridge is formed between the concave surfaces allowing the toroidal base to ride upon the ridge and rotate front to back and/or slide side to side. A tapered, notched stem extends from the seat for insertion into the medullary canal of the radius.

REFERENCES:
patent: 3852831 (1974-12-01), Dee
patent: 3869729 (1975-03-01), Attenborough
patent: 3909853 (1975-10-01), Lennox
patent: 4038704 (1977-08-01), Ring
patent: 4040130 (1977-08-01), Laure
patent: 4059854 (1977-11-01), Laure
patent: 4063314 (1977-12-01), Loda
"Total Arthroplasty of the Wrist to Relieve Pain and Increase Motion" by R. L. Linscheid et al., Geriatrics, Apr. 1976, pp. 48-52.
"The Development of a Total Wrist Arthroplasty" by Robert G. Volz, Clinical Orthopaedics & Related Research, No. 116, May 1976, pp. 209-214.
"Total Wrist Arthroplasty: A Preliminary Report" by R. D. Beckenbaugh et al., The Journal of Hand Surgery, vol. 2, No. 5, pp. 337-344, Sep. 1977.

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