Microsurgical anatomy of the modified transjngnlar approach

Objective To investigate both intracranial and extracranial components surgical aproach to resect the jugular foramen (JF) lesions in single-stage. Methods With the aid of the magnification (× 3-40), the microsurgical anatomy and extended exposure of the transjugluar approach were studied in 10 cadaveric head-neck specimens of adults. Results The exposure of the transjugular approach was directed through the jugular process of occipital bone to posterior surface of jugular bulk (JB). After removal of the mastoid process and the petrous bone under the labyrinth, the vertical segment of facial nerve was skeletoned. The exposure was extended lateral to JF. The transverse process of C1 was removed and the segment of the VA between the transverse foramen of C2 and its entrance of the dura was seperated, the cervical exposure was extended. The tympanornastoid notch and the posterior belly of digastric were closely related to facial nerve. Conclusion The modified transjugular approach can provide sufficient

Objective To investigate both intracranial and extracranial components surgical aproach to resect the jugular foramen (JF) lesions in single-stage. Methods With the aid of the magnification (× 3-40), the microsurgical anatomy and extended exposure of the transjugluar approach were studied in 10 cadaveric head-neck specimens of adults. Results The exposure of the transjugular approach was directed through the jugular process of occipital bone to posterior surface of jugular bulk (JB). After removal of the mastoid process and the petrous bone under the labyrinth, the vertical segment of facial nerve was skeletoned. The exposure was extended lateral to JF. The transverse process of C1 was removed and the segment of the VA between the transverse foramen of C2 and its entrance of the dura was seperated, the cervical exposure was extended. The tympanornastoid notch and the posterior belly of digastric were closely related to facial nerve. Conclusion The modified transjugular approach can provide sufficient exposure for JF. The tympanomastoid notch and the posterior belly of digastric are useful anatomic landmarks to identifl facial nerve. 12 refs,4 figs.