scholarly journals Technical Note: Bone Autograft Harvest using Ria System through Lateral Epicondyle Extraarticular Entry Point

2021 ◽  
pp. 59-64
Author(s):  
Jose Ignacio Laso ◽  
Nicola S Franulic ◽  
Sebastia N Spichige ◽  
Pedro Osorio ◽  
Carlos Rojas ◽  
...  
Keyword(s):  
Technical Note ◽  
Entry Point ◽  
Lateral Epicondyle ◽  
Bone Autograft

scholarly journals Placement of leads for stereotactic electroencephalography without the use of anchor bolts: technical note

2020 ◽  
pp. 1-6
Author(s):  
Torin Karsonovich ◽  
Allyson Alexander ◽  
Sarah Graber ◽  
Brent R. O’Neill
Keyword(s):  
Technical Note ◽  
Entry Point ◽  
Target Point ◽  
Epileptogenic Zone ◽  
Anchor Bolt ◽  
Cranial Defect ◽  
Common Technique ◽  
Thin Bone ◽  
The Mean ◽  
Anchor Bolts

OBJECTIVEStereotactic electroencephalography (SEEG) is an increasingly common technique that neurosurgeons use to help identify the epileptogenic zone. The anchor bolt, which typically secures the electrode to the skull, can be problematic in very thin bone or in electrodes placed in the occiput.METHODSA technique is described to place electrodes without the use of an anchor bolt. Accuracy data for entry point, target point, and depth were collected and compared between electrodes placed with and those placed without an anchor bolt.RESULTSA total of 58 patients underwent placement of 793 electrodes, of which 25 were boltless. The mean entry and depth errors at target were equivalent, although there was a trend toward greater depth error with boltless electrodes (3.4 mm vs 2.01 mm and 2.59 mm in the bolted groups, respectively). The mean lateral target error was slightly but significantly smaller for boltless electrodes. The majority (60%) of boltless leads were placed into thin temporal squamous bone. The average skull thickness at the entry point for all boltless leads was 1.85 mm.CONCLUSIONSBoltless SEEG electrodes can be placed through thin bone, adjacent to a cranial defect, or in the occiput with equivalent accuracy to electrodes placed with anchor bolts.

Implantation of Depth Electrodes in Children Using VarioGuide® Frameless Navigation System: Technical Note

2017 ◽  
Vol 15 (3) ◽  
pp. 302-309 ◽  
Author(s):  
Marcelo Budke ◽  
Josue M Avecillas-Chasin ◽  
Francisco Villarejo
Keyword(s):  
Navigation System ◽  
Technical Note ◽  
Entry Point ◽  
Electrode Placement ◽  
Electrode Position ◽  
Electrode Implantation ◽  
Depth Electrodes ◽  
Stereotactic Navigation ◽  
The Mean ◽  
A New Technique

Abstract BACKGROUND Electrode placement in epilepsy surgery seeks to locate the sites of ictal onset and early propagation. An invasive diagnostic procedure, stereoelectroencephalography (SEEG) is usually implemented with frame-based methods that can be especially problematic in young children. OBJECTIVE To evaluate the feasibility and accuracy of a new technique for frameless SEEG in children using the VarioGuide® system (Brainlab AG, München, Germany). METHODS A frameless stereotactic navigation system was used to implant depth electrodes with percutaneous drilling and bolt insertion in pediatric patients with medically refractory epilepsy. Data on general demographic information of electrode implantation, duration, number, and complications were retrospectively collected. To determine the placement accuracy of the VarioGuide® frameless system, the mean Euclidean distances were calculated by comparing the preoperatively planned trajectories with the final electrode position observed on postoperative computed tomography scans. RESULTS From May 2011 to December 2015, 15 patients (8 males, 7 females; mean age: 8 yr, range: 3-16 yr) underwent SEEG depth electrode implantation of a total of 111 electrodes. The mean error measured by the Euclidean distance from the center of the entry point to the intended entry point was 3.64 ± 1.78 mm (range: 0.58-7.59 mm) and the tip of the electrode to the intended target was 2.96 ± 1.49 mm (range: 0.58-7.82 mm). There were no significant complications. CONCLUSION Depth electrodes can be placed safely and accurately in children using the VarioGuide® frameless stereotactic navigation system.

Anatomic double-bundle ACL reconstruction using a bone–patellar tendon–bone autograft: a technical note

2009 ◽  
Vol 18 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Nicolas Pujol ◽  
Olivier Fong ◽  
Matthieu Karoubi ◽  
Philippe Beaufils ◽  
Philippe Boisrenoult
Keyword(s):  
Acl Reconstruction ◽  
Patellar Tendon ◽  
Double Bundle ◽  
Technical Note ◽  
Bone Autograft ◽  
Double Bundle Acl Reconstruction ◽  
Bone Patellar Tendon

Arthroscopic treatment of lateral epicondyle avulsion fracture of the elbow during adolescence: A technical note

2020 ◽  
Vol 7 (3) ◽  
pp. 157-160
Author(s):  
Sung-Hyun Yoon ◽  
Joong-Bae Seo ◽  
Kwon-Young Kwak ◽  
Jae-Sung Yoo
Keyword(s):  
Avulsion Fracture ◽  
Technical Note ◽  
Arthroscopic Treatment ◽  
Lateral Epicondyle

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.

Technical Note

1998 ◽  
Vol 47 (3) ◽  
pp. 153-160
Author(s):  
Wang ◽  
Park ◽  
Kang ◽  
Oh
Keyword(s):  
Technical Note

Field evaluation of a behavioral test battery for DWI: NHTSA technical note

1983 ◽  
Author(s):  
Theodore E. Anderson ◽  
Robert M. Schweitz ◽  
Monroe B. Snyder
Keyword(s):  
Field Evaluation ◽  
Technical Note ◽  
Test Battery ◽  
Behavioral Test ◽  
Behavioral Test Battery
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