Endoscopic Endonasal and Transciliary Supra-Orbital Approaches to Parasellar Structures: A Comparative Cadaveric Study of Surgical Working Area, Degrees of Freedom and Endoscopic Visualization

2016 ◽  
Vol 77 (S 01) ◽  
Author(s):  
Teddy Totimeh ◽  
Surya Pandey ◽  
Ronke Ogunbameru ◽  
Joshua Emerson ◽  
Chester Griffiths ◽  
...  
2019 ◽  
Author(s):  
Smruti Patel ◽  
Rafael Avendano-Pradel ◽  
Sophie D’herbemont ◽  
David Ceja ◽  
Diego Martinez ◽  
...  

Skull Base ◽  
2006 ◽  
Vol 16 (01) ◽  
pp. 001-013 ◽  
Author(s):  
Omar A El-Banhawy ◽  
Abd El-Hafiz Shehab El-Dien ◽  
Ahmed Said Zolfakar ◽  
Ahmed N Halaka ◽  
Heshmat Ayad

2012 ◽  
Vol 73 (05) ◽  
pp. 296-306 ◽  
Author(s):  
Forhad Chowdhury ◽  
Mohammod Haque ◽  
Khandkar Kawsar ◽  
Shamim Ara ◽  
Quazi Mohammod ◽  
...  

2016 ◽  
Vol 38 (03) ◽  
pp. 235-244
Author(s):  
Brandon Lucke-Wold ◽  
Aclan Dogan ◽  
Justin Cetas ◽  
William Cameron ◽  
Jeremy Ciporen

Purpose Simulation training offers a useful opportunity to appreciate vascular anatomy and develop the technical expertise required to clip intracranial aneurysms of the posterior circulation. Materials and Methods In cadavers, a comparison was made between the endoscopic transclival approach (ETA) alone and a combined multiportal approach using the ETA and a transorbital precaruncular approach (TOPA) to evaluate degrees of freedom, angles of visualization, and ergonomics of aneurysm clip application to the posterior circulation depending on basilar apex position relative to the posterior clinoids. Results ETA alone provided improved access to the posterior circulation when the basilar apex was high riding compared with the posterior clinoids. ETA + TOPA provided a significantly improved functional working area for instruments and visualization of the posterior circulation for a midlevel basilar apex. A single-shaft clip applier provided improved visualization and space for instruments. Proximal and distal vascular control and feasibility of aneurysmal clipping were demonstrated. Conclusions TOPA is a medial orbital approach to the central skull base; a transorbital neuroendoscopic surgery approach. This anatomical simulation provides surgical teams an alternative to the ETA approach alone to address posterior circulation aneurysms, and a means to preoperatively prepare for intraoperative anatomical and surgical instrumentation challenges.


2013 ◽  
Vol 20 (4) ◽  
pp. 587-592 ◽  
Author(s):  
Leon T. Lai ◽  
Michael K. Morgan ◽  
David C.W. Chin ◽  
Kornkiat Snidvongs ◽  
June X.Z. Huang ◽  
...  

Author(s):  
Constantin A. Hintschich ◽  
René Fischer ◽  
Caroline Seebauer ◽  
Karl-Michael Schebesch ◽  
Christopher Bohr ◽  
...  

Abstract Background Extended endoscopic endonasal operations of the sinuses and the frontal skull base require a bimanual action of the surgeon in many cases. Thus, typically an assistant guides the endoscope and centers the field of view. In this study, we investigate in which cases an endoscope holding arm can be used alternatively. Materials and methods The electromagnetic system ENDOFIXexo was used in different surgical interventions of the paranasal sinuses and beyond questioning ergonomics and geometrical limitations. The realized degrees of freedom were documented, and a topography of possible applications compiled. Results The presented system is limited by the anatomy of the anterior ethmoid and dynamic working conditions in the sagittal direction. Especially in extended interventions in the posterior ethmoid, in which parts of the nasal septum have been resected and a static position of the endoscope is desired the surgeon can greatly benefit from the robotic arm. Moreover, through the high flexibility of the endoscopic arm surgeries of the pharynx and larynx were performed, questioning the current gold standard of microscope-assisted surgical procedures. Conclusion Under the impression of an urging staff shortage and due to its unlimited patience, the ENDOFIXexo arm seems promising. Taking into account the complex anatomy and the limited access, we especially see a favorable field of application in the surgery of the pituitary gland and skull base tumors.


2020 ◽  
Vol 27 (1) ◽  
pp. 21-27
Author(s):  
Young Yoon Kim ◽  
Hyung Chae Yang ◽  
Jae Gu Kim ◽  
Hee Young Kim ◽  
Jong Min Park ◽  
...  

Background and Objectives: Treatment choice for fungal ball is endoscopic endonasal removal. However, it is not easy to remove fungal elements from the maxilla using only an endonasal approach. To overcome this difficulty, we introduced a cotton pledget technique and evaluated its efficacy through a cadaveric study and clinical research.Materials and Method: A cadaveric study was performed using 10 half heads of seven cadavers. The ease and safety of the cotton pledget technique were compared to those of a previously reported technique. In clinical research, we enrolled 52 patients who underwent surgery with the cotton pledget technique and 36 patients who underwent surgery using the conventional endoscopic approach. Demographic factors, preoperative Lund-Mackay (LM) score, sinonasal outcome test (SNOT) score, surgical morbidity, and incomplete removal rate were analyzed.Results: The cadaveric study showed that the cotton pledget technique was easier (p=0.011) than the conventional technique. In addition, clinical evaluation showed that the cotton pledget group had significantly lower incomplete removal rate than that of the control group (p=0.010).Conclusion: The cotton pledget technique is an easy and safe method that enables fungal ball removal more effectively than the conventional technique without need for inferior meatal antrostomy (IMA) or the Caldwell-Luc (CL) approach.


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