[Applied anatomy of abut structures of internal auditory meatus (IAM) through middle cranial fossa approach].

OBJECTIVE

To provide anatomical basis for operation of internal auditory meatus(IAM). Correlation structures with IAM were measured according to sign of hiatus of facial nerve.

METHOD

These structures include spinous foramen, superficial geater petrosal nerve, superficial lesser petrosal nerve, hiatus of facial nerve were measured on 24 wet cranial bone (48 sides).

RESULT

It is demonstrated that 8.3% geniculate ganglion and labyrinth segment of facial nerve Variation which distance from hiatus of facial nerve to geniculate ganglion is distinct.

CONCLUSION

Our data will be very holpful for location of IAM during operation via middle cranial fossa approach.