scholarly journals The Transspinal Canal Screwing Technique for Atlantoaxial Anomalies: A Technical Note and 2 Case Reports

Neurospine ◽  
2019 ◽  
Vol 16 (2) ◽  
pp. 293-297
Author(s):  
Kento Takebayashi ◽  
Motoo Kubota ◽  
Masahito Yuzurihara ◽  
Shigekuni Tachibana ◽  
Takakazu Kawamata
Keyword(s):  
Case Reports ◽  
Technical Note

scholarly journals Ultrasonographic, quantitative comparison of lower extremity lymphedema versus normal control. Technical note with case reports

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Vanessa Lôbo de Carvalho ◽  
Sergio Xavier Salles-Cunha ◽  
Filipe Amorim Braga ◽  
Rita de Cássia Dos Santos Moreira ◽  
Joyce Annenberg Araújo dos Santos ◽  
...  
Keyword(s):  
Case Report ◽  
Visual Perception ◽  
Case Reports ◽  
Technical Note ◽  
Quantitative Comparison ◽  
Image Quantification ◽  
Chi Square ◽  
Disease Evolution ◽  
Research Endeavor

Characterization of tissue by ultrasonography (CATUS) is a modern-day research endeavor intended to improve visual perception and image quantification. Visual perception increases with color. Quantification focuses on pixel echo brightnesses. A previously presented case report demonstrated reappearance of lymphatic channels a few days after manual drainage. Ultrasonographic images (US) of lymphatic leg and foot were quantitated and compared to a normal extremity based on proportions of pixels in specific brightness intervals. Anatomy evaluated included control- subcutaneous and lymphatic compartments. US with 256 brightness levels were obtained at the proximal, mid and distal leg and foot. Control and lymphatic Gray Scale Medians (GSM) and histograms were compared using t-test and Chi-square statistics. Average GSM was 97±9 (SD) (82-114, n=12 images) for control, greater than 51±15 (24-69, n=12) for lymphedematous leg/foot (P99% of pixels with brightness in the muscle-fiber range (41-196), in contrast to 62% for the lymphatic extremity (P<0.001). Lymphedema averaged 7%, 3%, 15% and 14% of pixels in blood, blood/fat, fat and fat/muscle-like regions (0-4, 5-7, 8-26, 27- 40 brightness intervals). Such regions were visually interpreted as lymphatic channels or lakes. Visual perception by colorization is subjective, but most people perceives details better, for example, during the day than at night. Furthermore, US images have 16 times more shades of gray, 256, than that perceived by the human visual system, 16 on average. Colorization improved perception of lymphatic channels and lakes by transforming blood echoes into red and lymphatic liquid with echoes similar to fat into yellow. Pixel proportions in low brightness intervals were higher in the lymphatic than in the normal extremity. Lymphedema severity was quantified. The CATUS technique may be used to monitor treatment effects or disease evolution.

Temporary Subclavian Steal to Reduce Intraprocedural Embolic Risk during Detachable Balloon Occlusion of Vertebrobasilar Aneurysms: Technical Note with Two Case Reports

1996 ◽  
Vol 3 (4) ◽  
pp. 423-428
Author(s):  
Donald A. Eckard ◽  
Paul L. O'Boynick ◽  
Patrick P. Han
Keyword(s):  
Vertebral Artery ◽  
Subclavian Artery ◽  
Axillary Artery ◽  
Case Reports ◽  
Balloon Occlusion ◽  
Technical Note ◽  
Detachable Balloon ◽  
Subclavian Steal ◽  
Permanent Occlusion ◽  
Artery Flow

Purpose: Unintentional intracerebral embolization is a serious, ever present threat during neurointerventional procedures. We have devised a method to reduce this intraprocedural risk in vertebral artery interventions by creating a temporary subclavian steal. Methods and Results: For this technique, a temporary balloon occlusion catheter is advanced into the proximal subclavian artery via a femoral artery approach, while a second introducer catheter is passed into the target vertebral artery via an axillary artery access. The temporary occluding balloon is then inflated within the proximal subclavian artery, establishing a subclavian steal that diverts blood flow into the arm. Permanent balloon occlusion of the vertebral artery can then be accomplished without fear of intracerebral embolization. Two patients with vertebrobasilar junction aneurysms were successfully treated with detachable balloon embolization using this cerebral protection technique. The permanent occlusion balloons were easily passed through the introducer catheter without difficulty despite reversed vertebral artery flow. No complications were encountered, and the aneurysms were successfully occluded in both patients. Conclusions: Temporary subclavian steal can be easily created to reduce the risk of cerebral embolic complications when performing interventional neuroradiological procedures in the vertebral artery.

Piezoelectric Bone Surgery: A Revolutionary Technique for Minimally Invasive Surgery in Cranial Base and Spinal Surgery? Technical Note

2005 ◽  
Vol 57 (suppl_4) ◽  
pp. ONS-E410-ONS-E410 ◽  
Author(s):  
Bernhard J. Schaller ◽  
R Gruber ◽  
H A. Merten ◽  
Thomas Kruschat ◽  
H Schliephake ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Spinal Surgery ◽  
Case Reports ◽  
Tethered Cord ◽  
Cranial Base ◽  
Technical Note ◽  
Illustrative Case ◽  
Neurosurgical Procedures ◽  
Bone Surgery ◽  
Piezoelectric Surgery

Abstract OBJECTIVE: Piezoelectric surgery represents an innovative, ultrasonic surgery technique for performing a safe and effective osteotomy or osteoplasty that contrasts with the traditional hard and soft tissue management methods with rotating instruments. METHODS: Because of its physical and mechanical properties, the definitive clinical advantage of piezoelectric bone surgery with regard to precision cutting lies in the sparing of vital neurovascular bundles or general soft tissue and better visualization of the surgical field, thus suggesting its great safety. Piezoelectric bone surgery has been previously described only in oral and maxillofacial operative procedures in adults. RESULTS: Five children between the age of 6 and 84 months were operated on for craniosynostosis, tethered cord, and an extraconal intraorbital tumor. The usefulness of piezoelectric bone surgery during neurosurgical procedures is presented for these cases. This technique is especially recommended when there are anatomic difficulties because of poor intraoperative visibility or the presence of delicate anatomic structures. CONCLUSION: The present preliminary report (comprising illustrative case reports) demonstrates and introduces for the first time the utility of piezoelectric bone surgery in cranial base and spinal surgery in children. Until now, there has been no documented neurosurgical experience of this technique even in adults.

Application of a computer navigation system in the treatment of silent sinus syndrome: Case reports and technical note

2020 ◽  
Vol 73 (4) ◽  
pp. 783-808
Author(s):  
Paola Bonavolontà ◽  
Giovanni Dell'Aversana Orabona ◽  
Antonia Cama ◽  
Antonio Romano ◽  
Vincenzo Abbate ◽  
...  
Keyword(s):  
Navigation System ◽  
Case Reports ◽  
Computer Navigation ◽  
Technical Note ◽  
Silent Sinus Syndrome ◽  
Computer Navigation System

scholarly journals Double segmental femur fracture: Two case reports with a technical note and perioperative illustration

2020 ◽  
Vol 6 (2) ◽  
pp. 618-621
Author(s):  
Dr. Velmurugeasn ◽  
V Durga Prasad ◽  
J Dheenadhayalan ◽  
S. Rajasekaran
Keyword(s):  
Femur Fracture ◽  
Case Reports ◽  
Technical Note

scholarly journals Surgical treatment of preschool childhood spinal thoracic tuberculosis: two case reports and technical note

2018 ◽  
Vol 32 (1) ◽  
pp. 85-93
Author(s):  
Mehmet Nuri Erdem ◽  
Anas Abdallah ◽  
Sinan Karaca ◽  
Mehmet Aydoğan
Keyword(s):  
Surgical Treatment ◽  
Case Reports ◽  
Pediatric Population ◽  
Posterior Instrumentation ◽  
Spinal Tuberculosis ◽  
Technical Note ◽  
Neurological Deficits ◽  
Pott’S Disease ◽  
Surgical Options

AbstractBackground: The development of paraplegia and kyphosis are two important problems related to spinal tuberculosis (Pott’s disease) in children. The current study aims to present two pediatric Pott’s disease, point out the progression of this disease in children, surgical options and surgical outcomes.Materials and methods: Two cases of childhood Pott’s disease were referred to our department with progressive neurological deficits (both of children were experienced bilateral weakness in lower extremities; grade C according to Frankel scale) during short periods (less than one month per each). Both cases’ MRIs are demonstrated abscesses in thoracic spine. Both patients are treated surgically. We discussed in this study the technical notes in both cases, especially in 2- year-old child.Results: Both cases were treated surgically after decompressing nerve roots and thecal sac posterior instrumentation was applied. Microbiological examination of both samples revealed on M.Tuberculosis. Orthoses are applied three months after operations. Antituberculosis medication protocol was applied. Preoperative paraparesis had recovered completely and muscle strengths all returned to normal in both children. There is no loss of correction during the follow-up periods.Conclusion: Spinal tuberculosis is a dynamic disease that may lead to severe deformities in childhood. Especially in cases where two or more vertebrae are affected, early surgical treatment is essential to prevent severe kyphosis. Surgical intervention accompanied with antituberculosis medications protocol is essential to cure treatment in pediatric population. In children aged ≤6 years and more than one vertebrae were affected, fıbula can be used to allow growth of the child vertebral column.

New AAC Access Strategy for Gesture Tracking: A Technical Note

2012 ◽  
Vol 21 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Susan Fager ◽  
Tom Jakobs ◽  
David Beukelman ◽  
Tricia Ternus ◽  
Haylee Schley
Keyword(s):  
Augmentative And Alternative Communication ◽  
Technical Note ◽  
Head Tracking ◽  
Alternative Communication ◽  
Access Methods ◽  
Cord Injury ◽  
Physical Limitations ◽  
Gesture Tracking ◽  
Communication Needs ◽  
Tracking Device

Abstract This article summarizes the design and evaluation of a new augmentative and alternative communication (AAC) interface strategy for people with complex communication needs and severe physical limitations. This strategy combines typing, gesture recognition, and word prediction to input text into AAC software using touchscreen or head movement tracking access methods. Eight individuals with movement limitations due to spinal cord injury, amyotrophic lateral sclerosis, polio, and Guillain Barre syndrome participated in the evaluation of the prototype technology using a head-tracking device. Fourteen typical individuals participated in the evaluation of the prototype using a touchscreen.

Sign in / Sign up

Export Citation Format

Share Document