Pre-contoured buttress plate for posterior wall acetabular fractures
OwnerDaniel Robert Schlattererinventor
Life of this patent
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Abstract
An improved posterior acetabular wall fracture buttress plate has a buttress plate having a pair of arms extending from a main plate. The main plate is pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface, the arms being 1.0 cm or less wide and bent lengthwise off horizontal about 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees. This is a stand-alone buttress plate intended to accomplish a buttress effect similar to previous art of 2-3 pelvic plates.
Claims12
A method of immobilizing a bone comprising the steps of:
- isolating a region of bone to be immobilized;
- reduction and temporary fixation of a plurality of fracture fragments with wires or reduction clamps;
- anatomic positioning of a buttress plate in a best buttress position;
- drilling and measurement steps for selected screw placement;
- removal of provisional fixation devices including wires and clamps;
- intra-operative fluoroscopic imaging to confirm fracture reduction and suitable buttress plate positioning;
- and
- fixation of screws.
A kit of buttress plates comprises:
- a plurality of buttress plates, each buttress plate having a main plate;
- wherein the kit has at least one smaller buttress plate with a small contoured curvature for smaller patients and at least one larger buttress plate with a larger contoured curvature for larger patients, the kit including one or more buttress plates having a pair of arms extending from the main plate, the main plate being pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface bent lengthwise off horizontal relative to the main plate at 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees, the arms being 1.0 cm or less wide.
Dependencies are inferred from the claim text.