Odd angle internal bone fixation device

Details Odd angle internal bone fixation device Odd angle internal bone fixation device

1996-07-08

1997-12-02

Tucker, Guy V.

Surgery

Instruments

Orthopedic instrumentation

606 73, 606 65, A61B 1768

Patent

active

056930550

ABSTRACT:
An odd angle internal fixation device for a transverse fracture located at the junction of the metaphysis and diaphysis of a long bone such as the proximal humerus. The internal fixation device includes an elongated lag screw and a rectangular shaped guide plate. The lag screw is introduced through the diaphyseal segment of the fracture at an angle ranging approximately between 155.degree. to 170.degree., cross fixing the bone fracture line and settling in the depth of the epiphysis. The guide plate serves as a guide for the lag screw and allows the engagement of the head of the screw to the inner wall of its short barrel. The engagement would cause the rectangular guide plate which is attached to the barrel, to be compressed against the diaphyseal cortex as the screw advances deeper into the epiphysis.

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patent: 2699774 (1955-01-01), Livingston
patent: 3489143 (1970-01-01), Halloran
patent: 4438762 (1984-03-01), Kyle
patent: 4657001 (1987-04-01), Fixel
patent: 4973333 (1990-11-01), Treharne
Advertisement for Fracture Appliances, Zimmer, Feb. 1947, 1 page.

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