乙狀竇前經(jīng)顳骨巖部鎖孔入路的顯微解剖學(xué)研究
[Abstract]:Microsurgical anatomy of the approach of the retrosigmoid posterior keyhole approach
Objective: to follow the principle of minimally invasive surgery, integrate the concept of minimally invasive keyhole surgery into the anterior approach of the sigmoid sinus and explore the feasibility and surgical approach design of the posterior sigmoid labyrinthine keyhole operation, and observe the exposed anatomical structure to provide the basis for clinical application.
Methods: 8 cadaver cranial specimens were perfused with color emulsion by formalin fixation. According to the principle of "small and large enough", the skin incision was gradually reduced on the basis of the traditional incision of the petrous part of the temporal bone before the traditional sigmoid sinus. Finally, the scalp incision with a "C" shaped length of about 7cm after the ear was formed. The flap and the myofascial flap were opened forward, and the part of the mastoid process combined with the temporal craniotomy to form a pea shaped bone window of about 3.5cm x 3cm; open the anterior and temporal dura mater, ligation, cut off the upper sinus, and distraction the temporal and cerebellar hemispheres. Under the microscope, the anatomical structure was observed under the microscope.
Results: the posterior 7cm "C" scalp incision and the 3.5cm x 3cm size bone window can fully meet the exposure of the important structure. By adjusting the head and microscope angles, the anterior labyrinth keyhole approach of the sigmoid sinus can reveal the ipsilateral oculomotor nerve, the trochlear nerve, the trigeminal nerve, the facial nerve complex, the glossopharyngeal nerve, vagus nerve, and the post traffic. The artery, posterior cerebral artery, superior cerebellar artery, anterior inferior cerebellar artery, middle and upper part of the basilar artery, superior slope, lateral ventral surface of the pons, and posterior cavernous sinus.
Conclusion: the experimental design of the anterior labyrinthine keyhole approach is feasible and can reveal the above structure well. In theory, the keyhole approach can be used to carry out the ventral lateral tumor of the bridge brain, the cerebral cavernous angioma of the unilateral bridge, the limited upper diagonal meningioma, the acoustic neuroma of the inner ear canal, the upper middle artery in the basilar artery. Surgery, such as tumor.
The second part is neuronavigation assisted anatomic study of the anterior sigmoid sinus via labyrinthine keyhole approach.
Objective: to integrate the concept of minimally invasive keyhole surgery into the anterior approach of the sigmoid sinus, and to design the anterior trans sigmoid sinus via the labyrinth keyhole approach (including two surgical methods, including the partial labyrinth and the apex keyhole approach and the full labyrinthine keyhole approach) with the aid of neuronavigation, and to explore the feasibility of grinding the related bone structure in the approach to provide the basis for clinical application.
Methods: 8 adult cadavers were perfused with 4% formalin and perfusion of intracranial arteriovenous glue. The navigation data were established before the experiment. In the navigation system, the scope of the important structures such as the sigmoid sinus, the bone labyrinth and the inner ear canal were marked with different colors. The incision and bone window of the labyrinthine keyhole approach were used, the flap and the myofascial flap were opened in stratified forward, and the navigation was guided. The lower wheel profile of the sigmoid sinus, the semicircular canal of the bone, and the facial nerve canal, all the labyrinthine and the tip of the rock, all the labyrinthine, observe the difference of the exposed structure, measure the length of the exposed structure, the operation field of vision and the maximum angle of the operation field in the anterior space of the sigmoid sinus.
Results: 1, the incision of the labyrinth keyhole approach can fully meet the requirement of the labyrinthine keyhole approach.2. On the premise of pre operation planning, the neuronavigation can assist the precise completion of the sigmoid sinus, the contour of the semicircular canal, the part of the labyrinth and the tip of the rock, the upper inner canal nodules, and the grinding of all the fans, which can reduce the important structure caused by blind grinding. .3, compared with the labyrinthine keyhole approach, can obviously increase the slope, the exposure length of the cranial and abduction nerves, the horizontal and vertical horizons, the maximum field angle (P0.01).4 in the anterior space of the sigmoid sinus through partial labyrinthine and apex keyhole approach. The subdural structure shows the length of the subdural structure and the anterior intersigmoid sinus through the full labyrinth keyhole approach. The maximum gap angle was also significantly increased (all P0.01) than that of the labyrinthine keyhole approach, but the difference was not statistically significant (P0.05) compared with the partial labyrinth and the apex keyhole approach.
Conclusion: the anterior sigmoid sinus via the labyrinthine keyhole approach is feasible, and it can well reveal the diagonal area and meet the minimally invasive idea. The neuronavigation system can assist the precise completion of the bone structure grinding. Partial labyrinth, rock tip or full labyrinth grinding can improve the exposure of the diagonal area. The labyrinth and the rock tip keyhole approach can be widely exposed. In the oblique area, the cerebellopontine angle, the supratentorial area of the cerebellar cerebellum, the anterior region of the pontine and the posterior cavernous sinus, the structure of the III-XI brain nerve, and the possibility of retaining the hearing and facial nerve function is higher. The observation and operation of the full labyrinth keyhole approach are more, but the further increase of exposure is limited, and the hearing is sacrificed.
The third part is a quantitative study of neuronavigation assisted anterior petrosal keyhole approach to petroclival region.
Objective: with the aid of neuronavigation, the quantitative analysis of the differences in the exposure of the diagonal region by the four methods of the keyhole approach of the petrous bone before the sigmoid sinus and the petrous bone of the temporal bone is provided.
Methods: according to the sequence of the keyhole entry of the petrous sinus before the sigmoid sinus, it was divided into four surgical methods: the posterior labyrinth keyhole approach, the partial labyrinth and the apex keyhole approach, the total labyrinth keyhole approach and the cochlear keyhole approach. 6 (12 sides) were fixed with 4% formaldehyde and intracranial arteriovenous perfusion was perfused. The navigation data had been established. The human corpse was dissected by microdissection, and the keyhole approach was simulated in turn. Using the Stryker neuronavigation system, the exposed area of the diagonal area and the operation freedom degree were measured and analyzed statistically.
Results: 1, the exposed area of the rocky area of the four keyhole approaches was (93.1 + 17.6) mm2, (340.1 + 47.1) mm2, (357.4 + 56.4) mm2 and (377.5 + 59.4) mm2, and the post labyrinth keyhole approach was significantly smaller than the latter three (all P0.01), and there was no significant difference (all P0.05).2 in the subsequent three, and the operation freedom was in turn (555.1 + 164.1) mm2 and MM 2, (847.2 + 186.7) mm2 and (906.8 + 204.6) mm2, through partial labyrinth and apex, through all labyrinthine and three keyhole approach of cochlea were significantly higher than that of posterior locking keyhole approach (all P0.01). All labyrinthine and cochlear keyhole entry approaches were higher than those of partial labyrinthine and apex keyhole approach (all P0.01), but through all labyrinthine and cochlear keyhole approach, through all labyrinthine and cochlear keyhole approach There was no significant difference in partial labyrinth and petrous apex and total labyrinthine keyhole approach (P0.05).
Conclusion: the trauma of the four modes of operation increased in turn. The theory of the posterior labyrinth keyhole approach does not damage the hearing and facial nerve function, and its exposure to the diagonal area is relatively limited. The exposure to the partial labyrinth and the apex keyhole approach is more extensive, and the possibility of preserving the facial nerve function and hearing is higher. The lesions through the total labyrinth keyhole approach to the lesion The treatment is more convenient, but it can not further increase the exposure of the diagonal area. The approach of the cochlear keyhole approach can not further increase the exposure of the diagonal area, but it is suitable for the operation of the internal carotid artery invasion.
【學(xué)位授予單位】:蘇州大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2007
【分類號】:R651;R322
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