三维ct能生动地显示锤骨、砧骨的立体形态及空间关系。
D CT can vividly demonstrate the shape and spatial relationships of malleus and incus.
砧骨短脚或砧骨窝及外半规管是乳突手术中确定FN锥曲段的重要标志。
Short limb of incus(or incudal fossa) and lateral semicircular canal are important landmarks by which pyramidal segment of FN might be located in manipulation of mastoid.
充分暴露外半规管轮廓和砧骨窝，保持骨性外耳道后壁的完整。
Outside the full exposition the semicircular canals outline and the anvil nest, maintains the osseous external auditory meatus behind completeness.
关于砧镫关节及砧骨长脚下部的血供，来自镫骨方面的动脉多于砧骨方面的动脉。
The arterial supply of incudostapedial joint and the distal portion of the incuscomes from the vessels passing to them from the stapes rather than from the incudalsource.
在显微镜下观察豆状突的形态与砧骨长脚之间的关系，观察砧骨长脚与豆状突之间的微细结构和组织切片。
The relationship between the long limbs of incus and the lenticular process was studied by observing the micro structure and tissue section with microscope.
结论砧骨短脚是手术的重要标志；
ConclusionThe crus breve incudis is an important marker for operation.
结果（1）锤骨头、颈、柄，砧骨体等在横、冠状位上的显示率均为10 0 % ，其余结构在两个位置上的显示率有不同程度的差异。
Results (1) The demonstrating rate of the head, neck and handle of malleus on both transverse and coronal plane was 100%. The other structures were seen in different degrees.
结果（1）锤骨头、颈、柄，砧骨体等在横、冠状位上的显示率均为10 0 % ，其余结构在两个位置上的显示率有不同程度的差异。
Results (1) The demonstrating rate of the head, neck and handle of malleus on both transverse and coronal plane was 100%. The other structures were seen in different degrees.
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