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Kanno H, Aizawa T, Hashimoto K, Itoi E, Ozawa H. Anterior decompression through a posterior approach for thoracic myelopathy caused by ossification of the posterior longitudinal ligament: a novel concept in anterior decompression and technical notes with the preliminary outcomes. J Neurosurg Spine 2022; 36:276-286. [PMID: 34560660 DOI: 10.3171/2021.4.spine213] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 04/06/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Various surgical procedures are used to manage thoracic myelopathy due to ossification of the posterior longitudinal ligament (OPLL). However, the outcomes of surgery for thoracic OPLL are generally unfavorable in comparison to surgery for cervical OPLL. Previous studies have shown a significant risk of perioperative complications in surgery for thoracic OPLL. Thus, a safe and secure surgical method to ensure better neurological recovery with less perioperative complications is needed. The authors report a novel concept of anterior decompression through a posterior approach aimed at anterior shift of the OPLL during surgery rather than extirpation or size reduction of the OPLL. This surgical technique can securely achieve anterior shift of the OPLL using a curved drill, threadwire saw, and curved rongeur. The preliminary outcomes were investigated to evaluate the safety and efficacy of this technique. METHODS This study included 10 consecutive patients who underwent surgery for thoracic OPLL. Surgical outcomes, including the ambulatory status, Japanese Orthopaedic Association (JOA) score, and perioperative complications, were investigated retrospectively. In this surgery, pedicle screws are introduced at least three levels above and below the corresponding levels. The laminae, facet joints, transverse processes, and pedicles are then removed bilaterally at levels wherein subsequent anterior decompression is performed. For anterior decompression, the OPLL and posterior portion of the vertebral bodies are partially resected using a high-speed drill with a curved burr, enabling the removal of osseous tissues just ventral to the spinal cord without retracting the dural sac. To securely shift the OPLL anteriorly, the intact PLL and posterior portion of the vertebral bodies cranial and caudal to the lesion are completely resected using a threadwire saw and/or curved rongeur. Rods are connected to the screws, and bone grafting is performed for posterolateral fusion. RESULTS Five patients were nonambulatory before surgery, but all were able to walk at the final follow-up. The average JOA score before surgery and at the final follow-up was 3.2 and 8.8 points, respectively. Notably, the mean recovery rate of JOA score was 72%. Furthermore, no patients showed neurological deterioration postoperatively. CONCLUSIONS The surgical technique is a useful alternative for safely achieving sufficient anterior decompression through a posterior approach and may consequently reduce the risk of postoperative neurological deterioration and improve surgical outcomes in patients with thoracic OPLL.
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Affiliation(s)
- Haruo Kanno
- 1Department of Orthopaedic Surgery, Tohoku University School of Medicine; and
- 2Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Toshimi Aizawa
- 1Department of Orthopaedic Surgery, Tohoku University School of Medicine; and
| | - Ko Hashimoto
- 1Department of Orthopaedic Surgery, Tohoku University School of Medicine; and
| | - Eiji Itoi
- 1Department of Orthopaedic Surgery, Tohoku University School of Medicine; and
| | - Hiroshi Ozawa
- 2Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan
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Butenschoen VM, Wostrack M, Meyer B, Gempt J. Endoscopic Transnasal Odontoidectomy for Ventral Decompression of the Craniovertebral Junction: Surgical Technique and Clinical Outcome in a Case Series of 19 Patients. Oper Neurosurg (Hagerstown) 2020; 20:24-31. [PMID: 33094804 DOI: 10.1093/ons/opaa331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 08/05/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Abnormalities and pathologies of the craniovertebral junction as well as space-occupying lesions of the odontoid process can result in myelopathy symptoms. A staged procedure with posterior stabilization and anterior transnasal endoscopic decompression is recently considered a less invasive alternative to the transoral approach. We present a considerably large case series focused on the operative technique and the long-term neurological clinical outcome. OBJECTIVE To determine the safety and efficacy of odontoidectomy performed via an endoscopic transnasal approach. METHODS We retrospectively reviewed all patients treated in our neurosurgical department from January 2009 to January 2020. Demographics, pre- and postoperative clinical status, and operative technique and complications were extracted and analyzed. RESULTS In total, 22 transnasal operations were performed in 19 patients from January 2009 to January 2020. All but one patient underwent posterior C1-C2 instrumentation prior to the anterior transnasal computed tomography (CT)-navigated full-endoscopic decompression. The median duration of symptoms before surgery was 3 mo. Complications occurred in 1 patient who died from septic organ failure because of his initial diagnosis of osteomyelitis. Postoperative CT imaging showed sufficient decompression in 16 patients, and 3 patients underwent a transnasal endoscopic re-decompression (16%). CONCLUSION Transnasal endoscopic odontoidectomy presents a safe procedure with a satisfying clinical and radiological postoperative outcome.
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Affiliation(s)
- Vicki M Butenschoen
- Department of Neurosurgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Maria Wostrack
- Department of Neurosurgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Bernhard Meyer
- Department of Neurosurgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Jens Gempt
- Department of Neurosurgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
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Kobets A, Ammar A, Dowling K, Cohen A, Goodrich J. The limits of endoscopic endonasal approaches in young children: a review. Childs Nerv Syst 2020; 36:263-271. [PMID: 31845030 DOI: 10.1007/s00381-019-04455-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 11/27/2019] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The endoscopic endonasal approach (EEA) provides visualization of four deep surgical corridors (transcribiform, transtubercular, transsellar, and transclival) with superior illumination and specialized deep-reaching instruments, as compared to microscopic techniques. Several studies have evaluated EEAs in children but do not stratify for the very young of age, whose particularly small nares and developmental anatomy may limit endonasal instrumentation. METHODOLOGY A comprehensive review of EEAs in infants and children to age 4 was performed to determine the limitations in this age group. RESULTS Eighteen studies were identified describing this approach for pediatric patients and the surgical caveats and limitations were reviewed. In very small children, CSF leaks, meningioencephaloceles, tumors of the anterior skull base, and lesions at the rostral cervical spine have been successfully treated endonasally. While newer studies advocate using 2.7-mm diameter (18-cm length) lenses, 4-mm diameter rigid lenses have been used without technical difficulty. The youngest patient in whom an EEA was used was a 6-week-old for a dermoid resection. Some have advocated that due to the small nares, approaches via bilateral entry are optimal for multiple instruments, however, others, including authors of a series of 28 repaired CSF leaks demonstrate successful single nare access. DISCUSSION EEAs are associated with less blood loss, are less likely to hinder normal growth of the skull and midface, and allow for the resection of even malignant lesions. Despite the limitations of the frontal, ethmoid, and sphenoid sinuses before age 3, reports have not documented insurmountable difficulty with EEAs even in infants. 2.7-mm diameter endoscopes are favored unilaterally or bilaterally to treat both benign and malignant lesions and preserve the young patient's facial anatomy better than older methods. Ever improving technology has facilitated the use of this approach in patients it would otherwise be infeasible for in the past, but it still cannot overcome the anatomical constraints of certain young patients in which this approach remains unindicated. Patient selection is therefore of utmost importance and the risks and benefits of more extensive approaches in these cases must be considered.
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Affiliation(s)
- Andrew Kobets
- Department of Neurosurgery, Division of Pediatric Neurosurgery, Johns Hopkins School of Medicine, 600 N Wolfe St, 5th Floor, Baltimore, MD, 21287, USA.
| | - Adam Ammar
- Leo Davidoff Department of Neurological Surgery, Division of Pediatric Neurosurgery, Children's Hospital at Montefiore, Albert Einstein College of Medicine, 3415 Bainbridge Ave, The Bronx, NY, 10467, USA
| | - Kamilah Dowling
- Leo Davidoff Department of Neurological Surgery, Division of Pediatric Neurosurgery, Children's Hospital at Montefiore, Albert Einstein College of Medicine, 3415 Bainbridge Ave, The Bronx, NY, 10467, USA
| | - Alan Cohen
- Department of Neurosurgery, Division of Pediatric Neurosurgery, Johns Hopkins School of Medicine, 600 N Wolfe St, 5th Floor, Baltimore, MD, 21287, USA
| | - James Goodrich
- Leo Davidoff Department of Neurological Surgery, Division of Pediatric Neurosurgery, Children's Hospital at Montefiore, Albert Einstein College of Medicine, 3415 Bainbridge Ave, The Bronx, NY, 10467, USA
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Alalade AF, Ogando-Rivas E, Forbes J, Ottenhausen M, Uribe-Cardenas R, Hussain I, Nair P, Lehner K, Singh H, Kacker A, Anand VK, Hartl R, Baaj A, Schwartz TH, Greenfield JP. A Dual Approach for the Management of Complex Craniovertebral Junction Abnormalities: Endoscopic Endonasal Odontoidectomy and Posterior Decompression with Fusion. World Neurosurg X 2019; 2:100010. [PMID: 31218285 PMCID: PMC6580888 DOI: 10.1016/j.wnsx.2019.100010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 01/02/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Ventral brainstem compression secondary to complex craniovertebral junction abnormality is an infrequent cause of neurologic deterioration in pediatric patients. However, in cases of symptomatic, irreducible ventral compression, 360° decompression of the brainstem supported by posterior stabilization may provide the best opportunity for improvement in symptoms. More recently, the endoscopic endonasal corridor has been proposed as an alternative method of odontoidectomy associated with less morbidity. We report the largest single case series of pediatric patients using this dual-intervention surgical technique. The purpose of this study was to evaluate the surgical outcomes of pediatric patients who underwent posterior occipitocervical decompression and instrumentation followed by endoscopic endonasal odontoidectomy performed to relieve neurologic impingement involving the ventral brainstem and craniocervical junction. METHODS Between January 2011 and February 2017, 7 patients underwent posterior instrumented fusion followed by endonasal endoscopic odontoidectomy at our unit. Standardized clinical and radiological parameters were assessed before and after surgery. A univariate analysis was performed to assess clinical and radiologic improvement after surgery. RESULTS A total of 14 operations were performed on 7 pediatric patients. One patient had Ehlers-Danlos syndrome, 1 patient had a Chiari 1 malformation, and the remaining 5 patients had Chiari 1.5 malformations. Average extubation day was postoperative day 0.9. Average day of initiation of postoperative feeds was postoperative day 1.0. CONCLUSIONS The combined endoscopic endonasal odontoidectomy and posterior decompression and fusion for complex craniovertebral compression is a safe and effective procedure that appears to be well tolerated in the pediatric population.
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Affiliation(s)
- Andrew F. Alalade
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
- Department of Neurosurgery, The Walton Centre, Liverpool, United Kingdom
| | - Elizabeth Ogando-Rivas
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Jonathan Forbes
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Malte Ottenhausen
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Rafael Uribe-Cardenas
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Ibrahim Hussain
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Prakash Nair
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Kurt Lehner
- Zucker School of Medicine, Hofstra-Northwell Health School of Medicine, New York, USA
| | - Harminder Singh
- Department of Neurosurgery, Stanford University Medical Center, Stanford, California, USA
| | - Ashutosh Kacker
- Department of Otolaryngology, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Vijay K. Anand
- Department of Otolaryngology, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Roger Hartl
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Ali Baaj
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Theodore H. Schwartz
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
- Department of Otolaryngology, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
- Department of Neuroscience, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
| | - Jeffrey P. Greenfield
- Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, USA
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Visocchi M, Iacopino DG, Signorelli F, Olivi A, Maugeri R. Walk the Line. The Surgical Highways to the Craniovertebral Junction in Endoscopic Approaches: A Historical Perspective. World Neurosurg 2018; 110:544-557. [PMID: 29433179 DOI: 10.1016/j.wneu.2017.06.125] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/17/2017] [Accepted: 06/19/2017] [Indexed: 12/26/2022]
Abstract
BACKGROUND We compiled a comprehensive literature review on the anatomic and clinical results of endoscopic approaches to the craniocervical junction (CVJ) to better contribute to identify the best strategy. METHODS An updated literature review was performed in the PubMed, OVID, and Google Scholar medical databases, using the terms "Craniovertebral junction," "Transoral approach," "Transnasal approach," "Transcervical approach," "Endoscopic endonasal approach," "Endoscopic transoral approach," "Endoscopic transcervical approach." Clinical series, anatomic studies, and comparative studies were reviewed. RESULTS Pure endonasal and cervical endoscopic approaches still have some disadvantages, including the learning curve and the deeper surgical field. Endoscopically assisted transoral surgery with 30° endoscopes represents an emerging option to standard microsurgical techniques for transoral approaches to the anterior CVJ. This approach should be considered as complementary rather than an alternative to the traditional microsurgical transoral-transpharyngeal approach. CONCLUSIONS The transoral approach with sparing of the soft palate still remains the gold standard compared with the pure transnasal and transcervical approaches because of the wider working channel provided by the former technique. The transnasal endoscopic approach alone appears to be superior when the CVJ lesion exceeds the upper limit of the inferior third of the clivus.
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Affiliation(s)
| | - Domenico Gerardo Iacopino
- Department of Experimental Biomedicine and Clinical Neurosciences, School of Medicine, Neurosurgical Clinic, University of Palermo, Palermo, Italy
| | | | - Alessandro Olivi
- Institute of Neurosurgery, Catholic University of Rome, Rome, Italy
| | - Rosario Maugeri
- Department of Experimental Biomedicine and Clinical Neurosciences, School of Medicine, Neurosurgical Clinic, University of Palermo, Palermo, Italy.
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Harel R, Nulman M, Cohen ZR, Knoller N. Anterior cervical approach for the treatment of axial or high thoracic levels. Br J Neurosurg 2018; 32:599-603. [PMID: 29745733 DOI: 10.1080/02688697.2018.1471123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 04/25/2018] [Accepted: 04/26/2018] [Indexed: 10/16/2022]
Abstract
PURPOSE Application of the anterior sub-axial cervical approach to the axial spine or the high thoracic spine has been previously described. Evaluation methods to determine the feasibility of these approaches were also described but alternative method was utilized in the current study. We describe our experience expanding the boundaries of anterior cervical approach utilizing a novel algorithm for approach selection. MATERIALS AND METHODS A retrospective analysis of patients' files and imaging data of all anterior cervical approach to treat pathologies above C2-3 disc space or below C7-D1 disc space. The decision to proceed with standard approach was based on CT or MRI scans and the pre-operative cervical range of motion. Post-operative course and surgical complications will be discussed. RESULTS During a two year period 13 patients had undergone anterior cervical approach to the axial spine (3 patients) or the thoracic spine (10 patients). Ten patients were treated for tumour resection, one for trauma, one for myelopathy and the last for infective osteomyelitis with epidural abscess. Three patients were previously operated in another hospital via the posterior approach with remaining compressive mass necessitating anterior decompression. Complications were recorded in 30% of the patients. CONCLUSIONS Approach to the axial or the high thoracic spine is more challenging and harbors approach-related complication. Pre-operative evaluation of patients imaging allows harnessing the standard approach for treatment of extreme levels with relative safety and efficiency. Spine surgeons' awareness to this technique may increase surgical efficacy while reducing the complication rates.
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Affiliation(s)
- Ran Harel
- a Spine Surgery Unit, Department of Neurosurgery , Sheba Medical Center , Ramat-Gan , Israel
- b Talpiot Medical Leadership Program , Sheba Medical Center , Ramat-Gan , Israel
- c Sackler Medical School, Tel-Aviv University , Tel-Aviv , Israel
| | - Maya Nulman
- c Sackler Medical School, Tel-Aviv University , Tel-Aviv , Israel
| | - Zvi R Cohen
- c Sackler Medical School, Tel-Aviv University , Tel-Aviv , Israel
- d Department of Neurosurgery , Sheba Medical Center , Ramat-Gan , Israel
| | - Nachshon Knoller
- a Spine Surgery Unit, Department of Neurosurgery , Sheba Medical Center , Ramat-Gan , Israel
- c Sackler Medical School, Tel-Aviv University , Tel-Aviv , Israel
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Direct and Oblique Approaches to the Craniovertebral Junction: Nuances of Microsurgical and Endoscope-Assisted Techniques Along with a Review of the Literature. ACTA NEUROCHIRURGICA. SUPPLEMENT 2017. [PMID: 28120061 DOI: 10.1007/978-3-319-39546-3_17] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
PURPOSE The aim of this review is to provide an update of the technical nuances of microsurgical and endoscopic-assisted approaches to the craniovertebral junction (transnasal, transoral, and transcervical), and to report on the available clinical results in order to identify the best strategy. METHODS A nonsystematic update of the reviews and reporting on the anatomical and clinical results of endoscopic-assisted and microsurgical approaches to the craniovertebral junction (CVJ) was performed. RESULTS Pure endonasal and cervical endoscopic approaches still have some disadvantages, including their steep learning curves and their deeper surgical fields. Endoscopically assisted transoral surgery with 30° endoscopes represents an emerging option compared with standard microsurgical techniques for transoral approaches to the anterior CVJ. This approach should be considered as complementary to, rather than as an alternative to the traditional transoral-transpharyngeal approach. CONCLUSIONS The transoral (microsurgical or video-assisted) approach with sparing of the soft palate still remains the gold standard compared with the "pure" transnasal and transcervical approaches, due to the wider working channel provided by the former technique. The transnasal endoscopic approach alone appears to be superior when the CVJ lesion exceeds the upper limit of the inferior third of the clivus. Of particular interest is the evidence that advances in reduction techniques can avoid the ventral approach.
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Aldahak N, Richter B, Bemora JS, Keller JT, Froelich S, Abdel Aziz KM. The endoscopic endonasal approach to cranio-cervical junction: the complete panel. Pan Afr Med J 2017; 27:277. [PMID: 29187946 PMCID: PMC5660904 DOI: 10.11604/pamj.2017.27.277.12220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 07/12/2017] [Indexed: 12/30/2022] Open
Abstract
We aim to establish a complete summary on the Endoscopic Endonasal Approach (EEA) to Cranio Cervical Junction (CCJ): evolution since first description, criteria to predict the feasibility and limitations, anatomical landmarks, indications and biomechanical evaluation after performing the approach. A comprehensive literature search to identify all available literature published between March 2002 and June 2015, the articles were divided into four categories according to their main purpose: 1- surgical technique, 2- anatomical landmarks and limitations, 3- literature reviews to identify main indications, 4- biomechanical studies. Thereafter, we demonstrate the approach step-by-step, using 1 fresh and 3 silicon injected embalmed cadaveric specimen heads. 61 articles and one poster were identified. The approach was first described on cadaveric study in 2002, and firstly used to perform odontoidectomy in 2005. The main indication is odontoid rheumatoid pannus and basilar invagination. The nasopalatine line (NPL), the superior nostril-hard palate Line (SN-HP), the naso-axial line (NAxL), the rhinopalatine Line (RPL) and other methods were described to predict the anatomical feasibility of the approach. The craniocervical fusion is potentially unnecessary after removal of < 75% of one occipital condyle. A recent cadaveric study stated the possibility of C1-C2 fusion via EEA. This paper reviews all available clinical and anatomical studies on the EEA to CCJ. The approach marked a significant evolution since its first description in 2002. Because of its lesser complications compared to the transoral approach, the EEA became when feasible, the approach of choice to the ventral CCJ.
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Affiliation(s)
- Nouman Aldahak
- Department of Neurosurgery, Allegheny General Hospital, Drexel University College of Medicine, 420 East North Avenue, Suite 302, Pittsburgh, PA, 15212, USA.,Department of Neurosurgery, Lariboisière Hospital, Assistance Publique, Hôpitaux de Paris, University of Paris VII-Diderot 2, Rue Ambroise Paré 75475 Paris Cedex 10, Paris, France
| | - Bertram Richter
- Department of Neurosurgery, Allegheny General Hospital, Drexel University College of Medicine, 420 East North Avenue, Suite 302, Pittsburgh, PA, 15212, USA
| | - Joseph Synèse Bemora
- Department of Neurosurgery, Lariboisière Hospital, Assistance Publique, Hôpitaux de Paris, University of Paris VII-Diderot 2, Rue Ambroise Paré 75475 Paris Cedex 10, Paris, France
| | - Jeffery Thomas Keller
- Departments of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, P.O Box 670515 Cincinnati, Ohio 45267-0515, USA
| | - Sebastien Froelich
- Department of Neurosurgery, Lariboisière Hospital, Assistance Publique, Hôpitaux de Paris, University of Paris VII-Diderot 2, Rue Ambroise Paré 75475 Paris Cedex 10, Paris, France
| | - Khaled Mohamed Abdel Aziz
- Department of Neurosurgery, Allegheny General Hospital, Drexel University College of Medicine, 420 East North Avenue, Suite 302, Pittsburgh, PA, 15212, USA
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Hankinson TC, Tuite GF, Moscoso DI, Robinson LC, Torner JC, Limbrick DD, Park TS, Anderson RCE. Analysis and interrater reliability of pB-C2 using MRI and CT: data from the Park-Reeves Syringomyelia Research Consortium on behalf of the Pediatric Craniocervical Society. J Neurosurg Pediatr 2017; 20:170-175. [PMID: 28524792 DOI: 10.3171/2017.3.peds16604] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The distance to the ventral dura, perpendicular to the basion to C2 line (pB-C2), is commonly employed as a measure describing the anatomy of the craniovertebral junction. However, both the reliability among observers and the clinical utility of this measurement in the context of Chiari malformation Type I (CM-I) have been incompletely determined. METHODS Data were reviewed from the first 600 patients enrolled in the Park-Reeves Syringomyelia Research Consortium with CM-I and syringomyelia. Thirty-one cases were identified in which both CT and MRI studies were available for review. Three pediatric neurosurgeons independently determined pB-C2 values using common imaging sequences: MRI (T1-weighted and T2-weighted with and without the inclusion of retro-odontoid soft tissue) and CT. Values were compared and intraclass correlations were calculated among imaging modalities and observers. RESULTS Intraclass correlation of pB-C2 demonstrated strong agreement between observers (intraclass correlation coefficient [ICC] range 0.72-0.76). Measurement using T2-weighted MRI with the inclusion of retro-odontoid soft tissue showed no significant difference with measurement using T1-weighted MRI. Measurements using CT or T2-weighted MRI without retro-odontoid soft tissue differed by 1.6 mm (4.69 and 3.09 mm, respectively, p < 0.05) and were significantly shorter than those using the other 2 sequences. Conclusions pB-C2 can be measured reliably by multiple observers in the context of pediatric CM-I with syringomeyelia. Measurement using T2-weighted MRI excluding retro-odontoid soft tissue closely approximates the value obtained using CT, which may allow for the less frequent use of CT in this patient population. Measurement using T2-weighted MRI including retro-odontoid soft tissue or using T1-weighted MRI yields a more complete assessment of the extent of ventral brainstem compression, but its association with clinical outcomes requires further study.
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Affiliation(s)
- Todd C Hankinson
- Pediatric Neurosurgery, Children's Hospital Colorado, University of Colorado Anschutz Medical Campus, and.,Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado
| | - Gerald F Tuite
- Division of Pediatric Neurosurgery, Neuroscience Institute, Johns Hopkins All Children's Hospital, St. Petersburg, Florida
| | - Dagmara I Moscoso
- Department of Neurosurgery, Columbia University, Morgan Stanley Children's Hospital of NewYork-Presbyterian, New York, New York
| | - Leslie C Robinson
- Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado
| | - James C Torner
- University of Iowa College of Public Health, Iowa City, Iowa; and
| | - David D Limbrick
- Department of Neurological Surgery, Washington University School of Medicine, Saint Louis, Missouri
| | - Tae Sung Park
- Department of Neurological Surgery, Washington University School of Medicine, Saint Louis, Missouri
| | - Richard C E Anderson
- Department of Neurosurgery, Columbia University, Morgan Stanley Children's Hospital of NewYork-Presbyterian, New York, New York
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Li ZF, Shao XH, Zhang LQ, Yang ZP, Li X, Yang Q, Li JM. Transnasal Endoscopic Biopsy Approach to Atlas Tumor with X-ray Assisted and Related Radiographic Measure. Orthop Surg 2017; 8:179-85. [PMID: 27384726 DOI: 10.1111/os.12232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 02/16/2016] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE To develop an endoscopic transnasal approach to atlas tumors and study its practicability. METHODS This article comprises two components: an illustrative case report and observational data on 50 volunteers. As to the case report, a 34 year old man presented with occipital pain for more than 3 months and underwent systematic investigation in Qilu Hospital of Shandong University. CT and MRI scans showed bony destruction in the craniovertebral junction (CVJ) suggestive of tumor. Via an endoscopic transnasal approach to the suspected atlas tumor through the inferior nasal meatus, a Gallini biopsy needle was used to obtain tissue for examination. The procedure was performed endoscopically with double orientation X-ray guidance and coaxial technology after establishing the shortest distance for the biopsy track and range of target tissue and was assisted by manual palpation. As to the observational data, 50 volunteers underwent atlas-related morphometric image measurement using gemstone CT equipment. Biopsy track angles, range for biopsy of the atlas and biopsy track distances were measured by a blinded operator on CT images. RESULTS CASE REPORT pathological examination of the biopsy resulted in diagnosis of a chordoma. There were no complications such as bleeding, infection or spinal cord injury. One month later, the patient underwent tumor resection and reconstruction in other hospital and the diagnosis of chordoma was confirmed by pathological examination of the resected specimen. Observational data: measurements obtained from CT scans of the 50 volunteers were as follows. Biopsy track angles: mean leaning inside angle 3.53° ± 0.39° and mean posterior slope angle 13.05° ± 1.39°. Range for atlas biopsy: transverse diameter 11.84 ± 1.24 mm and longitudinal diameter 9.67 ± 0.90 mm. Biopsy track distances: from atlas to nostril, and to anterior and posterior edges of the inferior turbinate mucosa were 94.52 ± 5.03 mm, 78.21 ± 4.63 mm, and 33.51 ± 3.13 mm, respectively. CONCLUSIONS An endoscopic transnasal approach enables biopsy and diagnosis of tumors in the anterior arch of the atlas. Relevant measurements were obtained by assessing CT scans of 50 volunteers to assist operators to determine the effective and safe range for transnasal atlas biopsy.
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Affiliation(s)
- Zhen-Feng Li
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
| | - Xian-Hao Shao
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
| | - Li-Qiang Zhang
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
| | - Zhi-Ping Yang
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
| | - Xin Li
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
| | - Qiang Yang
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
| | - Jian-Min Li
- Department of Orthopaedics, Qilu Hospital, Shandong University, Jinan, China
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Visocchi M, Signorelli F, Iacopino G, Barbagallo G. Nuances of Microsurgical and Endoscope Assisted Surgical Techniques to the Cranio-Vertebral Junction: Review of the Literature. OPEN JOURNAL OF ORTHOPEDICS AND RHEUMATOLOGY 2017; 2:001-008. [DOI: 10.17352/ojor.000006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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12
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Endoscopic Endonasal Approach for Craniovertebral Junction Pathologic Conditions: Myth and Truth in Clinical Series and Personal Experience. World Neurosurg 2017; 101:122-129. [PMID: 28179170 DOI: 10.1016/j.wneu.2017.01.099] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 01/25/2017] [Accepted: 01/26/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE For many years, the microsurgical transoral approach has been accepted as the gold standard for anterior decompressions of the craniovertebral junction (CVJ). The introduction of the endoscopic endonasal approach (EEA) has gained wide recognition and overwhelming support in recent years, including for diseases of the CVJ. The aim of this study was to critically analyze and discuss all cases of CVJ diseases approached by means of an EEA so far reported in the literature, including our institutional experience consisting of 6 consecutive patients. METHODS Six consecutive patients affected by CVJ disease underwent an EEA. Three patients had a tumor (2 chordomas and 1 myeloma) and 3 had impressio basilaris. RESULTS Five patients had an uncomplicated postoperative course and 1 developed an intraoperative cerebrospinal fluid leak and subsequent meningitis and died 5 weeks after surgery. A total of 107 patients (including our 6) affected by CVJ disease and treated with EEA have been reported so far. Among these patients, cerebrospinal fluid leak was reported in 13 (12.4%), transient velopharyngeal incompetence in 6 (5.6%), postoperative epistaxis in 2 (1.86%), and respiratory dysfunction requiring a tracheostomy in 2 (1.86%). In our extended institutional series of more than 20 consecutive anterior decompressions for CVJ diseases (including transoral and transnasal microsurgical approaches), the only fatal complication was associated with EEA. CONCLUSIONS On the basis of the reviewed literature and our personal experience, the reported increased safety of the EEA needs to be reassessed and discussed.
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13
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Transoral and transnasal odontoidectomy complications: A systematic review and meta-analysis. Clin Neurol Neurosurg 2016; 148:121-9. [DOI: 10.1016/j.clineuro.2016.07.019] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/05/2016] [Accepted: 07/10/2016] [Indexed: 11/23/2022]
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Tubbs RS, Demerdash A, Rizk E, Chapman JR, Oskouian RJ. Complications of transoral and transnasal odontoidectomy: a comprehensive review. Childs Nerv Syst 2016; 32:55-9. [PMID: 26248673 DOI: 10.1007/s00381-015-2864-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 07/28/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Odontoidectomy has been considered an effective way to treat anterior cervicomedullary compression in patients presenting with craniocervical joint anomalies. The transoral and transnasal routes have been described for anterior decompression surgery. However, to date, a comprehensive review of the complications from this procedure is lacking in the extant medical literature. Therefore, herein, we review this specific literature as a resource for surgeons. METHODS A comprehensive review of the literature via online search engines was performed. CONCLUSION The most reported complications for odontoidectomy are CSF leakage, postoperative craniocervical instability, velopharyngeal insufficiency, wound dehiscence, pulmonary issues, meningitis, and death. To our knowledge, this is the first comprehensive review of complications of odontoidectomy. Increased awareness of the more common complications associated with this procedure may help in the care of patients in the future.
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Affiliation(s)
| | | | - Elias Rizk
- Neurological Surgery, Penn State Hershey Medical Center, Hershey, PA, USA
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La Corte E, Aldana PR, Ferroli P, Greenfield JP, Härtl R, Anand VK, Schwartz TH. The rhinopalatine line as a reliable predictor of the inferior extent of endonasal odontoidectomies. Neurosurg Focus 2015; 38:E16. [PMID: 25828492 DOI: 10.3171/2015.1.focus14777] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT The endoscopic endonasal approach (EEA) provides a minimally invasive corridor through which the cervicomedullary junction can be decompressed with reduced morbidity rates compared to those with the classic transoral approaches. The limit of the EEA is its inferior extent, and preoperative estimation of its reach is vital for determining its suitability. The aim of this study was to evaluate the actual inferior limit of the EEA in a surgical series of patients and develop an accurate and reliable predictor that can be used in planning endonasal odontoidectomies. METHODS The actual inferior extent of surgery was determined in a series of 6 patients with adequate preoperative and postoperative imaging who underwent endoscopie endonasal odontoidectomy. The medians of the differences between several previously described predictive lines, namely the nasopalatine line (NPL) and nasoaxial line (NAxL), were compared with the actual surgical limit and the hard-palate line by using nonparametric statistics. A novel line, called the rhinopalatine line (RPL), was established and corresponded best with the actual limit of the surgery. RESULTS There were 4 adult and 2 pediatric patients included in this study. The NPL overestimated the inferior extent of the surgery by an average (± SD) of 21.9 ± 8.1 mm (range 14.7-32.5 mm). The NAxL and RPL overestimated the inferior limit of surgery by averages of 6.9 ± 3.8 mm (range 3.7-13.3 mm) and 1.7 ± 3.7 mm (range -2.8 to 8.3 mm), respectively. The medians of the differences between the NPL and NAxL and the actual surgery were statistically different (both p = 0.0313). In contrast, there was no statistically significant difference between the RPL and the inferior limit of surgery (p = 0.4375). CONCLUSIONS The RPL predicted the inferior limit of the EEA to the craniovertebral junction more accurately than previously described lines. The use of the RPL may help surgeons in choosing suitable candidates for the EEA and in selecting those for whom surgery through the oropharynx or the facial bones is the better approach.
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16
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Dlouhy BJ, Dahdaleh NS, Menezes AH. Evolution of transoral approaches, endoscopic endonasal approaches, and reduction strategies for treatment of craniovertebral junction pathology: a treatment algorithm update. Neurosurg Focus 2015; 38:E8. [PMID: 25828502 DOI: 10.3171/2015.1.focus14837] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The craniovertebral junction (CVJ), or the craniocervical junction (CCJ) as it is otherwise known, houses the crossroads of the CNS and is composed of the occipital bone that surrounds the foramen magnum, the atlas vertebrae, the axis vertebrae, and their associated ligaments and musculature. The musculoskeletal organization of the CVJ is unique and complex, resulting in a wide range of congenital, developmental, and acquired pathology. The refinements of the transoral approach to the CVJ by the senior author (A.H.M.) in the late 1970s revolutionized the treatment of CVJ pathology. At the same time, a physiological approach to CVJ management was adopted at the University of Iowa Hospitals and Clinics in 1977 based on the stability and motion dynamics of the CVJ and the site of encroachment, incorporating the transoral approach for irreducible ventral CVJ pathology. Since then, approaches and techniques to treat ventral CVJ lesions have evolved. In the last 40 years at University of Iowa Hospitals and Clinics, multiple approaches to the CVJ have evolved and a better understanding of CVJ pathology has been established. In addition, new reduction strategies that have diminished the need to perform ventral decompressive approaches have been developed and implemented. In this era of surgical subspecialization, to properly treat complex CVJ pathology, the CVJ specialist must be trained in skull base transoral and endoscopic endonasal approaches, pediatric and adult CVJ spine surgery, and must understand and be able to treat the complex CSF dynamics present in CVJ pathology to provide the appropriate, optimal, and tailored treatment strategy for each individual patient, both child and adult. This is a comprehensive review of the history and evolution of the transoral approaches, extended transoral approaches, endoscopie assisted transoral approaches, endoscopie endonasal approaches, and CVJ reduction strategies. Incorporating these advancements, the authors update the initial algorithm for the treatment of CVJ abnormalities first published in 1980 by the senior author.
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Affiliation(s)
- Brian J Dlouhy
- Department of Neurosurgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa; and
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Visocchi M, Di Martino A, Maugeri R, González Valcárcel I, Grasso V, Paludetti G. Videoassisted anterior surgical approaches to the craniocervical junction: rationale and clinical results. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2015; 24:2713-23. [PMID: 25801742 DOI: 10.1007/s00586-015-3873-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 03/08/2015] [Indexed: 01/31/2023]
Abstract
PURPOSE In this narrative review, we aim to give an update on the anatomic fundamentals of endoscopic assisted surgery to the craniocervical junction (transnasal, transoral and transcervical), and to report on the available clinical results. METHODS A non-systematic review and reporting on the anatomical and clinical results of endoscopic assisted approaches to the craniocervical junction (CVJ) is performed. RESULTS Pure endonasal and cervical endoscopic approaches still have some disadvantages, including the learning curve and the lack of 3-dimensional perception of the surgical field. Endoscopically assisted transoral surgery with 30° endoscopes represents an emerging alternative to standard microsurgical techniques for transoral approaches to the anterior CVJ. Used in conjunction with traditional microsurgery and intraoperative fluoroscopy, it provides a safe and improved method for anterior decompression with or without a reduced need for extensive soft palate splitting, hard palate resection, or extended maxillotomy. CONCLUSIONS Transoral (microsurgical or video-assisted) approach with sparing of the soft palate still remains the gold standard compared to the "pure" transnasal and transcervical approaches due to the wider working channel provided by the former technique. Transnasal endoscopic approach alone appears to be superior when the CVJ lesion exceeds the upper limit of the inferior third of the clivus. Combined transnasal and transoral procedures can be tailored according to the specific pathological and radiological findings.
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Affiliation(s)
| | - Alberto Di Martino
- Department of Orthopaedics and Trauma Surgery, University Campus Bio-medico of Rome, Rome, Italy.
| | - Rosario Maugeri
- Neurosurgery Clinic, Department of Experimental Medicine and Clinical Neurosciences, University of Palermo, Palermo, Italy
| | | | - Vincenzo Grasso
- Surgical Department, Neurosurgical Unit, SS. Antonio e Biagio e Cesare Arrigo Hospital, Alessandria, Italy
| | - Gaetano Paludetti
- Institute of Otorhinolaringology, Catholic University of Rome, Rome, Italy
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Ridder T, Anderson RCE, Hankinson TC. Ventral Decompression in Chiari Malformation, Basilar Invagination, and Related Disorders. Neurosurg Clin N Am 2015; 26:571-8. [PMID: 26408067 DOI: 10.1016/j.nec.2015.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ventral brainstem compression is an uncommon clinical diagnosis seen by pediatric neurosurgeons and associated with Chiari malformation, type I. Presenting clinical symptoms often include headaches, lower cranial neuropathies, myelopathy, central sleep apnea, ataxia, and nystagmus. When ventral decompression is required, both open and endoscopic transoral/transnasal approaches are highly effective.
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Affiliation(s)
- Thomas Ridder
- Children's Hospital Colorado, 13123 East 16th Avenue, Aurora, CO 80045, USA.
| | - Richard C E Anderson
- Department of Neurosurgery, Columbia University Medical Center, New York, NY 10032, USA
| | - Todd C Hankinson
- Children's Hospital Colorado, 13123 East 16th Avenue, Aurora, CO 80045, USA; Department of Neurosurgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Fujii T, Platt A, Zada G. Endoscopic Endonasal Approaches to the Craniovertebral Junction: A Systematic Review of the Literature. J Neurol Surg B Skull Base 2015; 76:480-8. [PMID: 26682128 DOI: 10.1055/s-0035-1554904] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 03/11/2015] [Indexed: 02/07/2023] Open
Abstract
Background We reviewed the current literature pertaining to extended endoscopic endonasal approaches to the craniovertebral junction. Methods A systematic literature review was utilized to identify published surgical cases of endoscopic endonasal approaches to the craniovertebral junction. Full-text manuscripts were examined for various measures of surgical indications, patient characteristics, operative technique, and surgical outcomes. Results We identified 71 cases involving endoscopic endonasal approaches for surgical management of a variety of pathologies located within the craniovertebral junction. Patient ages ranged from 3 to 87 years, with 40 females and 31 males. Five patients required tracheostomy, two were reintubated, and all others experienced an average intubation duration of 0.54 days following surgery. Fifty-eight patients (81.7%) underwent an additional posterior decompression or fusion either before or after the endonasal procedure. A complete resection of the pathologic lesion was reported in 57 cases (83.8%), another five were successful biopsies, and four resulted in partial resection. The follow-up time ranged from 0.5 to 57 months. Conclusion Although the transoral approach has been the standard for anterior surgical management for the past several decades, our systematic review illustrates that the extended endoscopic endonasal approach is a safe and effective alternative for most pathologies affecting the craniovertebral junction.
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Affiliation(s)
- Tatsuhiro Fujii
- Department of Neurosurgery, Keck School of Medicine of USC, Los Angeles, California, United States
| | - Andrew Platt
- Department of Neurosurgery, Keck School of Medicine of USC, Los Angeles, California, United States
| | - Gabriel Zada
- Department of Neurosurgery, Keck School of Medicine of USC, Los Angeles, California, United States
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20
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Van Abel KM, Mallory GW, Kasperbauer JL, M D, Moore EJ, Price DL, O'Brien EK, Olsen KD, Krauss WE, Clarke MJ, Jentoft ME, Van Gompel JJ. Transnasal odontoid resection: is there an anatomic explanation for differing swallowing outcomes? Neurosurg Focus 2015; 37:E16. [PMID: 25270135 DOI: 10.3171/2014.7.focus14338] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Swallowing dysfunction is common following transoral (TO) odontoidectomy. Preliminary experience with newer endoscopic transnasal (TN) approaches suggests that dysphagia may be reduced with this alternative. However, the reasons for this are unclear. The authors hypothesized that the TN approach results in less disruption of the pharyngeal plexus and anatomical structures associated with swallowing. The authors investigate the histological and gross surgical anatomical relationship between pharyngeal plexus innervation of the upper aerodigestive tract and the surgical approaches used (TN and TO). They also review the TN literature to evaluate swallowing outcomes following this approach. METHODS Seven cadaveric specimens were used for histological (n = 3) and gross anatomical (n = 4) examination of the pharyngeal plexus with the TO and TN surgical approaches. Particular attention was given to identifying the location of cranial nerves (CNs) IX and X and the sympathetic chain and their contributions to the pharyngeal plexus. S100 staining was performed to assess for the presence of neural tissue in proximity to the midline, and fiber density counts were performed within 1 cm of midline. The relationship between the pharyngeal plexus, clivus, and upper cervical spine (C1-3) was defined. RESULTS Histological analysis revealed the presence of pharyngeal plexus fibers in the midline and a significant reduction in paramedian fiber density from C-2 to the lower clivus (p < 0.001). None of these paramedian fibers, however, could be visualized with gross inspection or layer-by-layer dissection. Laterally based primary pharyngeal plexus nerves were identified by tracing their origins from CNs IX and X and the sympathetic chain at the skull base and following them to the pharyngeal musculature. In addition, the authors found 15 studies presenting 52 patients undergoing TN odontoidectomy. Of these patients, only 48 had been swallowing preoperatively. When looking only at this population, 83% (40 of 48) were swallowing by Day 3 and 92% (44 of 48) were swallowing by Day 7. CONCLUSIONS Despite the midline approach, both TO and TN approaches may injure a portion of the pharyngeal plexus. By limiting the TN incision to above the palatal plane, the surgeon avoids the high-density neural plexus found in the oropharyngeal wall and limits injury to oropharyngeal musculature involved in swallowing. This may explain the decreased incidence of postoperative dysphagia seen in TN approaches. However, further clinical investigation is warranted.
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Affiliation(s)
- Kathryn M Van Abel
- Division of Otolaryngology Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota
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21
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Ponce-Gómez JA, Ortega-Porcayo LA, Soriano-Barón HE, Sotomayor-González A, Arriada-Mendicoa N, Gómez-Amador JL, Palma-Díaz M, Barges-Coll J. Evolution from microscopic transoral to endoscopic endonasal odontoidectomy. Neurosurg Focus 2015; 37:E15. [PMID: 25270134 DOI: 10.3171/2014.7.focus14301] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT The goal of this study was to compare the indications, benefits, and complications between the endoscopic endonasal approach (EEA) and the microscopic transoral approach to perform an odontoidectomy. Transoral approaches have been standard for odontoidectomy procedures; however, the potential benefits of the EEA might be demonstrated to be a more innocuous technique. The authors present their experience with 12 consecutive cases that required odontoidectomy and posterior instrumentation. METHODS Twelve consecutive cases of craniovertebral junction instability with or without basilar invagination were diagnosed at the National Institute of Neurology and Neurosurgery in Mexico City, Mexico, between January 2009 and January 2013. The EEA was used for 5 cases in which the odontoid process was above the nasopalatine line, and was compared with 7 cases in which the odontoid process was beneath the nasopalatine line; these were treated using the transoral microscopic approach (TMA). Odontoidectomy was performed after occipital-cervical or cervical posterior augmentation with lateral mass and translaminar screws. One case was previously fused (Oc-C4 fusion). The senior author performed all surgeries. American Spinal Injury Association scores were documented before surgical treatment and after at least 6 months of follow-up. RESULTS Neurological improvement after odontoidectomy was similar for both groups. From the transoral group, 2 patients had postoperative dysphonia, 1 patient presented with dysphagia, and 1 patient had intraoperative CSF leakage. The endoscopic procedure required longer surgical time, less time to extubation and oral feeding, a shorter hospital stay, and no complications in this series. CONCLUSIONS Endoscopic endonasal odontoidectomy is a feasible, safe, and well-tolerated procedure. In this small series there was no difference in the outcome between the EEA and the TMA; however, fewer complications were documented with the endonasal technique.
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Affiliation(s)
- Juan Antonio Ponce-Gómez
- Departments of Neurological Surgery, National Institute of Neurology and Neurosurgery "Manuel Velasco Suarez," Mexico City, Mexico
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Fang CH, Friedman R, Schild SD, Goldstein IM, Baredes S, Liu JK, Eloy JA. Purely endoscopic endonasal surgery of the craniovertebral junction: A systematic review. Int Forum Allergy Rhinol 2015; 5:754-60. [PMID: 25946171 DOI: 10.1002/alr.21537] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 02/18/2015] [Accepted: 03/03/2015] [Indexed: 11/09/2022]
Abstract
BACKGROUND Endoscopic endonasal surgery (EES) is a relatively novel approach to the craniovertebral junction (CVJ). The purpose of this analysis is to determine the surgical outcomes of patients who undergo purely EES of the CVJ. METHODS A search for articles related to EES of the CVJ was performed using the MEDLINE/PubMed database. A bibliographic search was done for additional articles. Demographics, presenting symptoms, imaging findings, complications, follow-up, and patient outcomes were analyzed. RESULTS Eighty-five patients from 30 articles were included. The mean patient age was 47.9 ± 24.8 years (range, 3 to 96 years), with 44.7% being male. The most common presenting symptom was myelopathy (n = 64, 75.3%). The most common indications for surgery were brainstem compression secondary to basilar invagination (n = 41, 48.2%) and odontoid pannus (n = 20, 23.5%). Odontoidectomy was performed in 97.6% of cases. Intraoperative complications occurred in 16 patients (18.8%) and postoperative complications occurred in 18 patients (21.2%). Six patients developed postoperative respiratory failure necessitating a tracheostomy. Neurologic improvement was seen in 89.4% of patients at a mean follow-up of 22.2 months. CONCLUSION Our analysis found that EES of the CVJ results in a high rate of neurologic improvement with acceptable complication rates. Given its minimally invasive nature and high success rate, this approach appears to be a reasonable alternative to the traditional transoral approach in select cases. This study represents the largest pooled sample size of EES of the CVJ to date. Increasing use of the endoscopic endonasal approach will allow for further studies with greater statistical power.
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Affiliation(s)
- Christina H Fang
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark
| | - Remy Friedman
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark
| | - Sam D Schild
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark
| | - Ira M Goldstein
- Department of Neurological Surgery, Rutgers New Jersey Medical School, Newark
| | - Soly Baredes
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark.,Center for Skull Base and Pituitary Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark
| | - James K Liu
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark.,Department of Neurological Surgery, Rutgers New Jersey Medical School, Newark.,Center for Skull Base and Pituitary Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark
| | - Jean Anderson Eloy
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark.,Department of Neurological Surgery, Rutgers New Jersey Medical School, Newark.,Center for Skull Base and Pituitary Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark
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Tan SH, Ganesan D, Prepageran N, Waran V. A minimally invasive endoscopic transnasal approach to the craniovertebral junction in the paediatric population. Eur Arch Otorhinolaryngol 2014; 271:3101-5. [PMID: 24986428 DOI: 10.1007/s00405-014-3149-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 06/10/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Sien Hui Tan
- Department of Otolaryngology, Faculty of Medicine, University Malaya, Lembah Pantai, 50603, Kuala Lumpur, Malaysia,
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Choudhri O, Mindea SA, Feroze A, Soudry E, Chang SD, Nayak JV. Experience with intraoperative navigation and imaging during endoscopic transnasal spinal approaches to the foramen magnum and odontoid. Neurosurg Focus 2014; 36:E4. [DOI: 10.3171/2014.1.focus13533] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Object
In this study the authors share their experience using intraoperative spinal navigation and imaging for endoscopic transnasal approaches to the odontoid in 5 patients undergoing C1–2 surgery for basilar invagination at Stanford Hospital and Clinics from 2010 to 2013.
Methods
Of these 5 patients undergoing C1–2 surgery for basilar invagination, 4 underwent a 2-tiered anterior C1–2 resection with posterior occipitocervical fusion during a first stage surgery, followed by endoscopic endonasal odontoidectomy in a separate setting. Intraoperative stereotactic navigation was performed using a surgical navigation system in all cases. Navigation accuracy, characterized as target registration error, ranged between 0.8 mm and 2 mm, with an average of 1.2 mm. Intraoperative imaging using a CT scanner was also performed in 2 patients.
Results
Endoscopic decompression of the brainstem was achieved in all patients, and no intraoperative complications were encountered. All patients were extubated within 24 hours after surgery and were able to swallow within 48 hours. After appropriate initial reconstruction of the defect at the craniocervical junction, no postoperative CSF leakage, arterial injury, or need for reoperation was encountered; 1 patient developed mild postoperative velopharyngeal insufficiency that resolved by the 6-month follow-up evaluation. There were no deaths and no patients required tracheostomy placement. The average inpatient stay after surgery varied between 72 and 96 hours, without extended intensive care unit stays for any patient.
Conclusions
Technologies such as intraoperative CT scanning and merged MRI/CT can provide the surgeon with detailed, virtual real-time information about the extent of complex endoscopic vertebral segment resection and brainstem decompression and lessens the prospect of revision or secondary procedures in this challenging surgical corridor. Moreover, patients experience limited morbidity and can tolerate early oral intake after transnasal endoscopic odontoidectomy. Essential to the successful undertaking of these endoscopic adventures is 1) an understanding of the endoscopic nasal, skull base, and neurovascular anatomy; 2) advanced and extended-length instrumentation including navigation; and 3) a team approach between experienced rhinologists and spine surgeons comfortable with endoscopic skull base techniques
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Affiliation(s)
| | | | | | - Ethan Soudry
- 2Otolaryngology–Head & Neck Surgery, Stanford University Medical Center, Stanford, California
| | | | - Jayakar V. Nayak
- 2Otolaryngology–Head & Neck Surgery, Stanford University Medical Center, Stanford, California
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