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cranial base surgery

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https://www.readbyqxmd.com/read/28922880/a-side-door-to-meckel-s-cave-anatomic-feasibility-study-for-the-lateral-transorbital-approach
#1
Blake Harrison Priddy, Cristian Ferrareze Nunes, Andre Beer-Furlan, Ricardo Carrau, Iacopo Dallan, Daniel Monte-Serrat Prevedello
BACKGROUND: In the last decade, endoscopic skull base surgery has significantly developed and generated a plethora of techniques and approaches for access to the cranial ventral floor. However, the exploration for the least-aggressive, maximally efficient approach continues. OBJECTIVE: To describe in detail an anatomical study, along with the technical nuances of a novel endoscopic approach to Meckel's Cave (MC) using a lateral transorbital (LTO) route. METHODS: Eighteen orbits of injected cadaveric specimens were operated on, using an endoscopic LTO approach to MC, middle cranial fossa, and paramedian skull base preserving the orbital rim...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922233/endoscopic-versus-open-repair-for-craniosynostosis-in-infants-using-propensity-score-matching-to-compare-outcomes-a-multicenter-study-from-the-pediatric-craniofacial-collaborative-group
#2
Douglas R Thompson, David Zurakowski, Charles M Haberkern, Paul A Stricker, Petra M Meier
BACKGROUND: The North American Pediatric Craniofacial Collaborative Group (PCCG) established the Pediatric Craniofacial Surgery Perioperative Registry to evaluate outcomes in infants and children undergoing craniosynostosis repair. The goal of this multicenter study was to utilize this registry to assess differences in blood utilization, intensive care unit (ICU) utilization, duration of hospitalization, and perioperative complications between endoscopic-assisted (ESC) and open repair in infants with craniosynostosis...
September 14, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28921242/use-of-computer-assisted-design-and-manufacturing-to-localize-dural-venous-sinuses-during-reconstructive-surgery-for-craniosynostosis
#3
Rajiv R Iyer, Adela Wu, Alexandra Macmillan, Leila Musavi, Regina Cho, Joseph Lopez, George I Jallo, Amir H Dorafshar, Edward S Ahn
OBJECTIVE: Cranial vault remodeling surgery for craniosynostosis carries the potential risk of dural venous sinus injury given the extensive bony exposure. Identification of the dural venous sinuses can be challenging in patients with craniosynostosis given the lack of accurate surface-localizing landmarks. Computer-aided design and manufacturing (CAD/CAM) has allowed surgeons to pre-operatively plan these complex procedures in an effort to increase reconstructive efficiency. An added benefit of this technology is the ability to intraoperatively map the dural venous sinuses based on pre-operative imaging...
September 18, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28917287/intraoperative-computed-tomography-in-cranial-neurosurgery
#4
REVIEW
Christian Schichor, Nicole Terpolilli, Jun Thorsteinsdottir, Jörg-Christian Tonn
The challenge for treating complex lesions with the aim of minimal surgery-related morbidity has generated an increasing demand for sophisticated intraoperative imaging modalities. Newest generations of intraoperative computed tomography (CT) scanners offer a multitude of hardware and software improvements resulting in higher image quality that further propagates its everyday usage in the interdisciplinary operative setting. This article describes workflow and applicability of intraoperative CT scanning in cranial neurosurgery, in subspecialties like skull base or vascular neurosurgery, and its advantages and limitations...
October 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/28893644/high-bone-mass-due-to-novel-lrp5-and-amer1-mutations
#5
Alice Costantini, Päivi Kekäläinen, Riikka E Mäkitie, Outi Mäkitie
WNT signaling is a key regulator of bone metabolism and its increased or decreased activity leads to skeletal disorders. Here we describe two patients with high bone mass (HBM) caused by novel mutations in two different WNT pathway components. The first patient is a 53-year-old male with HBM. He was diagnosed at adult age based on significantly increased bone mineral density (BMD). He has undergone several surgeries due to excessive bone in ear canals, bilateral jaw exostoses and mandibular tori. Radiographs show severe cortical thickening of cranial and long bones...
September 8, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28890040/risk-of-deep-vein-thrombosis-in-neurosurgery-state-of-the-art-on-prophylaxis-protocols-and-best-clinical-practices
#6
REVIEW
Mario Ganau, Lara Prisco, Helene Cebula, Julien Todeschi, Houssem Abid, Gianfranco Ligarotti, Raoul Pop, Francois Proust, Salvatore Chibbaro
OBJECTIVE: To analytically discuss some protocols in Deep vein thrombosis (DVT)/pulmonary Embolism (PE) prophylaxis currently use in Neurosurgical Departments around the world. DATA SOURCES: Analysis of the prophylaxis protocols in the English literature: An analytical and narrative review of literature concerning DVT prophylaxis protocols in Neurosurgery have been conducted by a PubMed search (back to 1978). DATA EXTRACTION: 80 abstracts were reviewed, and 74 articles were extracted...
September 7, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28887277/single-step-resection-of-an-intraosseous-meningioma-and-cranial-reconstruction-technical-note
#7
C E Broeckx, T J J Maal, R D Vreeken, R R M Bos, M Ter Laan
OBJECTIVE: Simultaneous tumour resection and cranial reconstruction can be a challenging task. Surgical navigation is an indispensible tool in making this single-step procedure possible. In this case report we describe a new technique for this procedure to ensure a precise resection and optimal fit of the implant in a patient with an intraosseous meningioma. METHODS: We generated a 3D model of the patients skull based on a CT-scan and created a digital 'resection line' object using 3D Studio Max 2016 software...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28885697/second-look-arthroscopic-findings-after-cora-based-leveling-osteotomy
#8
Barbara Vasquez, Don Hulse, Brian Beale, Sharon Kerwin, Chad Andrews, Brian W Saunders
OBJECTIVE: To describe the arthroscopic appearance of intra-articular structures mid-term (9 months) and long-term (>12 months) after CORA-based leveling osteotomy (CBLO). STUDY DESIGN: Case series. ANIMALS: Dogs (n = 41) with second-look arthroscopy of the stifle after CBLO for treatment of a cranial cruciate ligament (CCL) deficiency. Both stifles were re-evaluated (stifles n = 42) in 1 dog. METHODS: Medical records of dogs that had second-look arthroscopy after CBLO were reviewed...
September 8, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28882369/3d-printed-tcp-based-scaffold-incorporating-vegf-loaded-plga-microspheres-for-craniofacial-tissue-engineering
#9
F Fahimipour, M Rasoulianboroujeni, E Dashtimoghadam, K Khoshroo, M Tahriri, F Bastami, D Lobner, L Tayebi
OBJECTIVE: Vascularization is a critical process during bone regeneration/repair and the lack of tissue vascularization is recognized as a major challenge in applying bone tissue engineering methods for cranial and maxillofacial surgeries. The aim of our study is to fabricate a vascular endothelial growth factor (VEGF)-loaded gelatin/alginate/β-TCP composite scaffold by 3D printing method using a computer-assisted design (CAD) model. METHODS: The paste, composed of (VEGF-loaded PLGA)-containing gelatin/alginate/β-TCP in water, was loaded into standard Nordson cartridges and promptly employed for printing the scaffolds...
September 4, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28875119/indocyanine-green-fluorescence-to-evaluate-nasoseptal-flap-viability-in-endoscopic-endonasal-cranial-base-surgery
#10
Edward E Kerr, Ali Jamshidi, Ricardo L Carrau, Raewyn G Campbell, Leo F Ditzel Filho, Bradley A Otto, Daniel M Prevedello
Objectives  The pedicled nasoseptal flap (NSF) has dramatically reduced postoperative cerebrospinal fluid leakage following endoscopic endonasal approach (EEA) surgery. Although rare, its arterial supply may be damaged during harvest or may be preoperatively damaged for numerous reasons. Early recognition permits harvesting a contralateral flap before sacrificing its pedicle as part of the surgical exposure or use of an alternative flap. Design  Technical feasibility study and case series. Setting  Tertiary care university-associated medical center...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28871557/anatomy-of-the-transverse-mesocolon-based-on-embryology-for-laparoscopic-complete-mesocolic-excision-of-right-sided-colon-cancer
#11
Takeru Matsuda, Yasuo Sumi, Kimihiro Yamashita, Hiroshi Hasegawa, Masashi Yamamoto, Yoshiko Matsuda, Shingo Kanaji, Taro Oshikiri, Tetsu Nakamura, Satoshi Suzuki, Yoshihiro Kakeji
BACKGROUND: To treat colon cancer via complete mesocolic excision (CME) with central vascular ligation (CVL), dissection along the embryologic fusion planes is required. However, this surgery is difficult, especially for right-sided colon cancer, because the anatomy and embryology of the transverse mesocolon are not familiar to gastrointestinal surgeons. METHODS: In this video article, the anatomic details of the transverse mesocolon based on embryology are illustrated with a focus on the venous anatomy...
September 5, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28867323/endoscopic-middle-cranial-fossa-reconstruction-via-a-subtemporal-keyhole-a-technical-note
#12
Fuminari Komatsu, Masaaki Imai, Akihiro Hirayama, Naokazu Hayashi, Shinri Oda, Masami Shimoda, Mitsunori Matsumae
BACKGROUND: Skull base reconstruction is an essential technique for repairing cerebrospinal fluid (CSF) leakage. A reliable method for middle cranial fossa (MCF) reconstruction with minimal invasiveness has not been reported. An initial case of endoscopic MCF reconstruction via a subtemporal keyhole is described. CASE DESCRIPTION: A 57-year-old man developed severe meningitis and was diagnosed with spontaneous CSF leakage from bone defects on the tegmen tympani...
August 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28863110/relative-location-of-fundus-meatus-acustici-interni-via-porus-acusticus-internus-in-facial-nerve-decompression
#13
Xu Liu, Haodong Wang, Kailiang Cheng, Youqiong Li
Facial neural edema is the pathophysiological base of Bell's palsy. The middle cranial fossa approach is used to relieve the oppression of facial nerve at its most narrow course in the facial canal. In this research, the authors mainly discussed the internal auditory canal segment of facial nerve, completely in the shadow of the bony structure, which is inconvenient for transmastoid decompression. Therefore, the objective was to explore the definite position of the fundus meatus acustici interni from internal acoustic pore...
September 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28862552/cavernous-sinus-compartments-from-the-endoscopic-endonasal-approach-anatomical-considerations-and-surgical-relevance-to-adenoma-surgery
#14
Juan C Fernandez-Miranda, Nathan T Zwagerman, Kumar Abhinav, Stefan Lieber, Eric W Wang, Carl H Snyderman, Paul A Gardner
OBJECTIVE Tumors with cavernous sinus (CS) invasion represent a neurosurgical challenge. Increasing application of the endoscopic endonasal approach (EEA) requires a thorough understanding of the CS anatomy from an endonasal perspective. In this study, the authors aimed to develop a surgical anatomy-based classification of the CS and establish its utility for preoperative surgical planning and intraoperative guidance in adenoma surgery. METHODS Twenty-five colored silicon-injected human head specimens were used for endonasal and transcranial dissections of the CS...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28857703/vascular-stent-placement-for-palliation-of-mass-associated-chylothorax-in-two-dogs
#15
Scott Taylor, Elizabeth Rozanski, Amy F Sato, John E Rush
CASE DESCRIPTION 2 dogs with chylothorax were identified to have cardiac mass lesions obstructing the return of venous blood from the cranial vena cava. Chylous effusion was presumed to have been a result of an increase in cranial vena cava pressure affecting flow of chyle through the thoracic duct. CLINICAL FINDINGS Both dogs had tachypnea and pleural effusion requiring therapeutic thoracocentesis. Fluid analysis confirmed chylothorax. A heart-base mass was identified via echocardiography in each dog, and CT-angiographic findings confirmed obstruction to venous return in the cranial vena cava in both dogs and compression of the pulmonary artery in 1 dog...
September 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28844965/osteosynthesis-of-a-cranio-osteoplasty-with-a-biodegradable-magnesium-plate-system-in-miniature-pigs
#16
Hendrik Naujokat, Jan-Marten Seitz, Yahya Açil, Timo Damm, Inga Möller, Aydin Gülses, Jörg Wiltfang
Biodegradable magnesium alloys are a new class of implant material suitable for bone surgery. The aim of this study was to investigate plates and screws made of magnesium for osteosynthesis in comparison to titanium in a cranial fracture model. Implants were used for internal fixation of a cranio-osteoplasty in nine minipigs. Computed tomography was conducted repeatedly after surgery. The implants and the adjacent tissues were harvested 10, 20 and 30 weeks after surgery and investigated by micro-computed tomography and histological analysis...
August 24, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28841620/a-treatment-algorithm-for-patients-presenting-with-sagittal-craniosynostosis-after-the-age-of-1-year
#17
Edward J Ruane, Catharine B Garland, Liliana Camison, Regina A Fenton, Ken K Nischal, Ian F Pollack, Mandeep S Tamber, Lorelei J Grunwaldt, Joseph E Losee, Jesse A Goldstein
BACKGROUND: Sagittal craniosynostosis typically presents shortly after birth, with a scaphocephalic head shape, and is addressed surgically for functional and aesthetic concerns. This study highlights the authors' experience with a challenging patient population: those with phenotypically mild, missed, and late-developing sagittal craniosynostosis. METHODS: A prospective cohort study was conducted for all cases of sagittal craniosynostosis presenting to the authors' institution between July of 2013 and December of 2015...
September 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28838112/endoscopic-endonasal-surgery-for-cranial-base-chondrosarcomas
#18
Francisco Vaz-Guimaraes, Juan C Fernandez-Miranda, Maria Koutourousiou, Ronald L Hamilton, Eric W Wang, Carl H Snyderman, Paul A Gardner
BACKGROUND: Microsurgical resection via open approaches is considered the main treatment modality for cranial base chondrosarcomas (CBCs). The use of endoscopic endonasal approaches (EEAs) has been rarely reported. OBJECTIVE: To present the endoscopic endonasal experience with CBCs at our institution. METHODS: Retrospective review of the medical records of 35 consecutive patients who underwent EEA for CBC resection between January 2004 and April 2013...
August 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28834834/three-dimensional-analysis-of-midfacial-soft-tissue-changes-after-maxillary-posterior-impaction-and-intraoral-vertical-ramus-osteotomy-for-mandibular-setback-in-class-iii-patients
#19
Seung-Won Seo, Young-Soo Jung, Hyoung-Seon Baik
This study investigated the correlation between the 3-dimensional changes in midfacial soft tissues, including the parasagittal area and maxilla-mandible complex, after Le Fort I maxillary posterior impaction and bilateral intraoral vertical ramus osteotomy (B-IVRO), using cone-beam computed tomography (CBCT). This retrospective study included 22 skeletal Class III patients (6 men and 16 women; mean age 21.6 years) who underwent orthognathic surgery. Three-dimensional CBCT images taken before and 1 year after surgery were superimposed based on the cranial base...
August 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28828558/anatomical-study-of-occipital-triangles-the-inferior-suboccipital-triangle-a-useful-vertebral-artery-landmark-for-safe-postero-lateral-skull-base-surgery
#20
Giuseppe La Rocca, Roberto Altieri, Luca Ricciardi, Alessandro Olivi, Giuseppe Maria Della Pepa
BACKGROUND: Vertebral artery (VA) identification within the suboccipital triangle is a key step in craniocervical junction surgery. Often VA exposition at this level is arduous (space-occupying lesions, previous surgery); to identify VA more proximally may prove useful in complex cases. An alternative triangle is present just below the suboccipital one, where VA can be easily controlled; we named it the inferior suboccipital triangle (IST). The aim of the study is to identify IST anatomical relations and VA space orientation and evaluate its practical utility in surgery...
August 22, 2017: Acta Neurochirurgica
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