Process and device for the preoperative determination of the positioning data of endoprosthetic parts
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United States of America Patent
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May 7, 2002
Issued Date -
N/A
app pub date -
Sep 2, 1999
filing date -
Mar 11, 1997
priority date (Note) -
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Abstract
In order to be able to ascertain the position of the bone in the body without complicated procedures in a process for the preoperative determination of the positioning data of endoprosthetic parts of a central joint relative to the bones forming the central joint, a respective outer articular point is determined by way of movement of the bones about a respective outer joint which is located at the end of the two bones facing away from the central joint. An articular point is determined for each of the two bones in the area of the central joint, and a direction characteristic for each of these bones is determined by way of a straight-line connection of the two articular points obtained in this manner for the two bones. The orientation of the endoprosthetic parts relative to this characteristic direction is then determined. Apparatus for carrying out the process is also provided.
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