目的 To determine a rapid and accurate method for locating the keypoint and "keyhole" in the suboccipital retrosigmoid keyhole approach.方法 A coordinate system was established using the baseline and its per...
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目的 To determine a rapid and accurate method for locating the keypoint and "keyhole" in the suboccipital retrosigmoid keyhole approach.方法 A coordinate system was established using the baseline and its perpendicular line through the top point of diagastric *** perpendicular distance (x), and the horizontal distance (y) between the central point of the "keyhole" and the top point of the digastric groove in that coordinate system were measured.结果 x and y were 14.20±2.63 mm and 6.54±1.83 mm, respectively(left) and 14.95±2.53 mm and 6.65±1.61 mm, respectively (right).There was no significant difference between the left and right sides of the skull (P>0.05).结论 he drilling point was 14.0 mm above and 6.5 mm behind the top point of the digastric groove in the coordinate system.
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