05129899 is referenced by 260 patents and cites 6 patents.

A surgical spinal fixation system includes a bone bolt having first end portions that are adapted to be surgically implanted into a patient's spine at first and second spaced apart positions and a central portion of the bone bolt defining a load transfer surface, the bone bolt having a second upper threaded sections for threadably receiving a nut at a shaped, countersunk interface. As an alternate embodiment, a bone screw provides an upper enlarged head with a lower coarsely threaded shank. A plate having upper and lower surfaces and outer opposed edges is provided with an elongated slot for accommodating a selected bone bolt or bone screw. The plate edges carry fine adjustments extending between the upper and lower surfaces of the plate and a load transfer washer interfaces the plate and the selected bone bolt or bone screw for distributing load (and reducing stress) from the bone bolt (or screw) to the plate.

Title
Bone fixation apparatus
Application Number
7/675740
Publication Number
5129899
Application Date
March 27, 1991
Publication Date
July 14, 1992
Inventor
James W Simmons
San Antonio
TX, US
David L Brumfield
Nesbit
MS, US
Laura C Small
Memphis
TN, US
Agent
Pravel Gambrell Hewitt Kimball & Krieger
Assignee
Smith & Nephew Richards
TN, US
IPC
A61B 17/58
A61B 17/56
A61F 2/08
A61F 5/04
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