Roadmap to Endoscopic Endonasal Occipitocervical Fusion following Odontoidectomy: Anatomical Evaluation of Buccopharyngeal Flap Exposure in a Cadaveric Study

2019 ◽  
Author(s):  
Smruti Patel ◽  
Rafael Avendano-Pradel ◽  
Sophie D’herbemont ◽  
David Ceja ◽  
Diego Martinez ◽  
...  
Keyword(s):  
Cadaveric Study ◽  
Occipitocervical Fusion ◽  
Endoscopic Endonasal

scholarly journals Endoscopic Endonasal Partial Middle Turbinectomy Approach: Adaptability of the Procedure in a Cadaveric Study and in Surgery for Different Sphenoid Sinus and Skull Base Lesions

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
Keyword(s):  
Skull Base ◽  
Sphenoid Sinus ◽  
Cadaveric Study ◽  
Endoscopic Endonasal ◽  
Skull Base Lesions

Transcranial Microsurgical and Endoscopic Endonasal Cavernous Sinus (CS) Anatomy: A Cadaveric Study

2012 ◽  
Vol 73 (05) ◽  
pp. 296-306 ◽  
Author(s):  
Forhad Chowdhury ◽  
Mohammod Haque ◽  
Khandkar Kawsar ◽  
Shamim Ara ◽  
Quazi Mohammod ◽  
...  
Keyword(s):  
Cavernous Sinus ◽  
Cadaveric Study ◽  
Endoscopic Endonasal

scholarly journals Predicting clinical outcomes using morphometric changes in adults with complex Chiari malformation undergoing occipitocervical fusion with or without ventral decompression: patient series

2021 ◽  
Vol 2 (22) ◽  
Author(s):  
John K. Chae ◽  
Neelan J. Marianayagam ◽  
Ibrahim Hussain ◽  
Amanda Cruz ◽  
Ali A. Baaj ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Chiari Malformation ◽  
Posterior Fossa Decompression ◽  
Occipitocervical Fusion ◽  
Endoscopic Endonasal ◽  
Perpendicular Line ◽  
Canal Diameter ◽  
Bulbar Symptoms ◽  
Patient Series ◽  
Atlantodental Interval

BACKGROUND The authors assessed the connection between clinical outcomes and morphometrics in patients with complex Chiari malformation (CM) who have undergone posterior fossa decompression (PFD) and subsequent occipitocervical fusion (OCF) with or without ventral decompression (VD). OBSERVATIONS The authors retrospectively reviewed 33 patients with CM aged over 21 years who underwent PFD and OCF with or without endoscopic endonasal odontoidectomy at the authors’ institution (21 OCF only and 12 OCF + VD). Clivoaxial angle (CXA), pB-C2 (perpendicular line to the line between the basion and C2), atlantodental interval (ADI), basion-dens interval (BDI), basion-axial interval (BAI), and C1 canal diameter were measured on preoperative and approximately 3-month postoperative computed tomography or magnetic resonance imaging scans. Common symptoms included headache, paresthesia, and bulbar symptoms. Clinical improvement after surgery was observed in 78.8% of patients. CXA, ADI, and BDI all significantly increased after surgery, whereas pB-C2 and BAI significantly decreased. OCF + VD had a significantly more acute CXA and longer pB-C2 preoperatively than OCF only. Patients who clinically improved postoperatively showed the same significant morphometric changes, but those who did not improve showed no significant morphometric changes. LESSONS Patients showing improvement had greater corrections in skull base morphometrics than those who did not. Although there are various mutually nonexclusive reasons why certain patients do not improve after surgery, smaller degrees of morphometric correction could play a role.

scholarly journals Increase in clivo-axial angle is associated with clinical improvement in children undergoing occipitocervical fusion for complex Chiari malformation: patient series

2021 ◽  
Vol 2 (23) ◽  
Author(s):  
Neelan J. Marianayagam ◽  
John K. Chae ◽  
Ibrahim Hussain ◽  
Amanda Cruz ◽  
Ali A. Baaj ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Chiari Malformation ◽  
Pediatric Patients ◽  
Age Groups ◽  
Posterior Fossa Decompression ◽  
Occipitocervical Fusion ◽  
Endoscopic Endonasal ◽  
Presenting Symptoms ◽  
Axial Angle ◽  
Canal Diameter

BACKGROUND The authors analyzed the pre- and postoperative morphometric properties of pediatric patients with complex Chiari malformation undergoing occipitocervical fusion (OCF) to assess clinical outcomes and morphometric properties that might influence postoperative outcomes. OBSERVATIONS The authors retrospectively reviewed 35 patients younger than 22 years with Chiari malformation who underwent posterior fossa decompression and OCF with or without endoscopic endonasal odontoidectomy at their institution (13 with and 22 without odontoidectomy). Clivo-axial angle (CXA), pB-C2, atlantodental interval, basion-dens interval, basion-axial interval, and canal diameter at the level of C1 were measured on preoperative and approximately 3-month postoperative computed tomography or magnetic resonance imaging. The authors further stratified the patient cohort into three age groups and compared the three cohorts. The most common presenting symptoms were headache, neck/shoulder pain, and dysphagia; 80% of the cohort had improved clinical outcomes. CXA increased significantly after surgery. When stratified into those who showed postoperative improvement and those who did not, only the former showed a significant increase in CXA. After age stratification, the significant changes in CXA were observed in the 7- to 13-year-old and 14- to 21-year-old cohorts. LESSONS CXA may be the most important morphometric predictor of clinical outcomes after OCF in pediatric patients with complex Chiari malformation.

A cadaveric study of the endoscopic endonasal transclival approach to the basilar artery

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 ◽  
...  
Keyword(s):  
Basilar Artery ◽  
Cadaveric Study ◽  
Endoscopic Endonasal

scholarly journals The Antibiotic-Vaseline Soaked Cotton Pledget as an Adjuvant Material for Endoscopic Endonasal Fungal Ball Removal

2020 ◽  
Vol 27 (1) ◽  
pp. 21-27
Author(s):  
Young Yoon Kim ◽  
Hyung Chae Yang ◽  
Jae Gu Kim ◽  
Hee Young Kim ◽  
Jong Min Park ◽  
...  
Keyword(s):  
Removal Rate ◽  
Conventional Technique ◽  
Cadaveric Study ◽  
Control Group ◽  
Surgical Morbidity ◽  
Endoscopic Endonasal ◽  
Safe Method ◽  
Fungal Ball ◽  
Incomplete Removal ◽  
Sinonasal Outcome Test

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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