Evaluation of the Accuracy of 4 Conventional Freehand Frontal Ventriculostomy Methods in the Chinese Population.

Comparison of the Puncture Depth Between the Ipsilateral Ventricle and the Contralateral Ventricle The difference in the puncture depth between the ipsilateral ventricle and the contralateral ventricle was extremely significant ( P < .0001); the depth of puncture to the ipsilateral ventricle in 373 patients was less than 60 mm, and the depth of puncture to the contralateral ventricle in 37 patients ranged from 52 to 65 mm (Figure 4 D).

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