Vorrichtung und Verfahren zur Bestimmung der Spannung eines Ligamenttransplantats.

摘要

An instrument for determining the variation in tension of a ligament graft extending between first and second proposed fixation sites positioned on first and second articulated bones, respectively, comprises a yoke (16) which carries a device for securing the yoke to one of the first and second bones. A yoke plate (18) is rotatable carried by the yoke. A main housing (60) is adapted for connection to the yoke plate. A sled (78) is slidably carried by the main housing. The sled is adapted for connection to the ligament graft. A mechanism (85, 91) is provided for adjusting the position of the sled relative to the housing so as to place a desired degree of tension on the ligament graft. A transducer (87) is associated with the mechanism for adjusting for determining changes in tension, if any, from the desired degree of tension as the first and second bones are moved relative to one another.