Objective: Although several radiolucent head-fixation devices have been developed to allow intraoperative cerebral angiography, no device provides satisfactory freedom to obtain the most suitable head position. We recently designed a multipurpose radiolucent Sugita head frame (modified radiolucent Sugita frame) with satisfactory degrees of freedom and rigidity for intraoperative head positioning and head holding, respectively.
Description Of Instrumentation: A short arm and a ring joint, made of engineering plastic, were added to the prototype radiolucent Sugita frame, to permit side-tilting movements of the frame. The shape of all handles at the joints was also changed and the size was enlarged, to facilitate adjustment of the head position.
Experience And Results: We used this modified radiolucent Sugita frame in 20 cases involving aneurysms or arteriovenous malformations. The frame performed satisfactorily in all cases, in terms of firm head fixation and unrestrained freedom of head positioning at the surgeon's request. The modified radiolucent Sugita frame was evaluated with respect to its resistance to physical forces. The physical strength of the modified radiolucent Sugita frame is almost equivalent to that of the metallic Sugita frame and is considered sufficient for clinical usage.
Conclusion: With its rigidity, satisfactory degrees of freedom, and ease of handling, the clinical applicability of the dramatically improved radiolucent head frame enables us to obtain satisfactory intraoperative angiograms.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/00006123-200210000-00025 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Immediate Dental Implant Stabilization in a Canine Model Using a Novel Mineral-Organic Adhesive: 4-Month Results.
Int J Oral Maxillofac Implants
January 2020
Purpose: This study evaluated a novel injectable, self-setting, osteoconductive, resorbable adhesive that provides immediate implant stabilization.
Materials And Methods: Twenty-six large canines had the mandibular second through fourth premolars and the first molar removed bilaterally. After 3 months, oversized osteotomies were prepared with only the apical 2 mm of the implant engaging native bone.
Modified metaphyseal-loading anterolaterally flared anatomic femoral stem: five- to nine-year prospective follow-up evaluation and results of three-dimensional finite element analysis.
Artif Organs
February 2013
Department of Orthopaedics and Rehabilitation Medicine, Faculty of Medical Sciences Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, Fukui, Japan.
We have designed a proximal-fitting, anterolaterally flared, arc-deposit hydroxyapatite-coated anatomical femoral stem (FMS-anatomic stem; KYOCERA Medical, Osaka, Japan) for cementless total hip arthroplasty (THA) for Japanese patients with dysplastic hip osteoarthritis, using a nonlinear three-dimensional finite element analysis simulating loading conditions. The Anatomic Fit stem was modified in the region of the arc-sprayed surface, to allow more proximal appearance of spot welds. The aim of the present study was to analyze the clinical and radiographic outcomes of patients who underwent THA using this stem.
View Article and Find Full Text PDFA case report of dysosteosclerosis observed from the prenatal period.
Clin Pediatr Endocrinol
July 2010
Department of Pediatrics, University of Yamanashi, Yamanashi, Japan ; Department of Pediatrics, Yamanashi Prefectural Central Hospital, Yamanashi, Japan.
Dysosteosclerosis is a sclerosing bone dysplasia with skeletal changes resembling those of osteopetrosis. The disorder is associated with dental anomalies and occasionally mental retardation. Because of the rarity and phenotypic diversity of dysosteosclerosis, it remains unsolved whether or not the disorder is heterogeneous.
View Article and Find Full Text PDFModified, multipurpose, radiolucent sugita head frame for intraoperative cerebral angiography.
Neurosurgery
October 2002
Department of Neurosurgery, Shinshu University School of Medicine, Matsumoto, Japan.
Objective: Although several radiolucent head-fixation devices have been developed to allow intraoperative cerebral angiography, no device provides satisfactory freedom to obtain the most suitable head position. We recently designed a multipurpose radiolucent Sugita head frame (modified radiolucent Sugita frame) with satisfactory degrees of freedom and rigidity for intraoperative head positioning and head holding, respectively.
Description Of Instrumentation: A short arm and a ring joint, made of engineering plastic, were added to the prototype radiolucent Sugita frame, to permit side-tilting movements of the frame.
Intraoperative angiography for emergency cerebrovascular surgery using an exclusively developed radiolucent Sugita head frame and fixation.
J Clin Neurosci
November 2000
Division of Emergency and Critical Care Medicine, Shinshu University Hospital, Matsumoto, Japan.
Intraoperative angiography during emergency cerebrovascular surgery, clipping operation for acute aneurysmal subarachnoid hemorrhage, is reported. For acquisition of intraoperative angiography, an exclusively developed radiolucent version of a Sugita head frame, made of engineering plastics for angiography, and an ordinary fluoroscopic unit were installed. In a radiolucent head frame, all the parts of the ordinary metallic Sugita multipurpose head frame, fixation and its accessories were made of high-molecular polymer plastics in the same size.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!