Frontonasal and Craniofrontonasal Dysplasia: Preoperative Quantitative Description of the Cranio-Orbito-Zygomatic Region Based on Computed and Conventional Tomography

1994 ◽  
Vol 31 (2) ◽  
pp. 97-105 ◽  
Author(s):  
Stephanie M Moffat ◽  
Jeffrey C. Posnick ◽  
Gaylene E. Pron ◽  
Derek C. Armstrong
Keyword(s):  
Computed Tomography ◽  
Clinical Presentation ◽  
Matched Control ◽  
Quantitative Description ◽  
Frontonasal Dysplasia ◽  
Orbital Wall ◽  
Computed Tomography Scans ◽  
Conventional Tomography ◽  
The Mean ◽  
Medial Orbital Wall

The unoperated cranio-orbito-zygomatic complex of 18 children (mean 4.7 years) with frontonasal dysplasia (FND) and 12 children (mean 1.1 years) with craniofrontonasal dysplasia (CFND) was quantified by 15 standard measurements performed on either computed tomography scans or facial tomograms. The results were compared with age-matched control values. In the FND group, the mean anterior interorbital and mid-interorbital distances were significantly increased at 148% and 118% of normal, and in the CFND patients, at 177% and 140% of normal. Excessive medial orbital wall protrusion (mean, 145% of normal in FND and 177% in CFND), shortened zygomatic arch lengths (mean, 94% of normal In FND and 91% in CFND), and reduced cephalic lengths (mean, 96% of normal in FND and 83% in CFND) were all observed. An expanded interzygomatic buttress distance was documented only in the CFND group, at 111% of normal. The clinical presentation of craniofacial deformities such as FND and CFND can be objectively described by a numerical analysis of the bony pathology.

scholarly journals Ethnic variation in medial orbital wall anatomy and its implications for decompression surgery

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Minhui Amy Chan ◽  
Farah Ibrahim ◽  
Arjunan Kumaran ◽  
Kailing Yong ◽  
Anita Sook Yee Chan ◽  
...  
Keyword(s):  
Relative Position ◽  
Ethmoid Sinus ◽  
Decompression Surgery ◽  
Ethnic Variation ◽  
Sinus Wall ◽  
Orbital Wall ◽  
Mean Width ◽  
Significant Difference ◽  
The Mean ◽  
Medial Orbital Wall

Abstract Background To describe the inter-ethnic variation in medial orbital wall anatomy between Chinese, Malay, Indian and Caucasian subjects. Methods Single-centre, retrospective, Computed Tomography (CT)-based observational study. 20 subjects of each ethnicity, were matched for gender and laterality. We excluded subjects younger than 16 years and those with orbital pathology. OsiriX version 8.5.1 (Pixmeo., Switzerland) and DICOM image viewing software CARESTREAM Vue PACS (Carestream Health Inc., USA) were used to measure the ethmoidal sinus length, width and volume, medial orbital wall and floor angle and the relative position of the posterior ethmoid sinus to the posterior maxillary wall. Statistical analyses were performed using Statistical Package for Social Sciences version 25.0 (IBM, USA). Results There were 12 males (60 %) in each group, with no significant difference in age (p = 0.334–0.994). The mean ethmoid sinus length in Chinese, Malay, Indian and Caucasian subjects, using the Chinese as reference, were 37.2, 36.9, 38.0 and 37.4mm, the mean width was 11.6, 10.5, 11.4 and 10.0mm (p = 0.020) and the mean ethmoid sinus volume were 3362, 3652, 3349 and 3898mm3 respectively. The mean medial orbital wall and floor angle was 135.0, 131.4, 131.0 and 136.8 degrees and the mean relative position of posterior ethmoid sinus to posterior maxillary wall were − 2.0, -0.2, -1.5 and 1.6mm (p = 0.003) respectively. Conclusions No inter-ethnic variation was found in decompressible ethmoid sinus volume. Caucasians had their posterior maxillary sinus wall anterior to their posterior ethmoidal walls unlike the Chinese, Malay and Indians. Awareness of ethnic variation is essential for safe orbital decompression.

Hyperkinetic Movement Disorders

2015 ◽  
Author(s):  
Devin Mackay ◽  
Edison Miyawaki
Keyword(s):  
Computed Tomography ◽  
Clinical Features ◽  
Movement Disorders ◽  
Clinical Presentation ◽  
Genetic Correlations ◽  
Practical Approach ◽  
Involuntary Movements ◽  
Computed Tomography Scans ◽  
Paroxysmal Disorders ◽  
Laboratory Investigations

The hyperkinetic movement disorders include heterogeneous diseases and syndromes, all characterized by one or a variety of excessive, involuntary movements. The hyperkinetic movement disorders are heterogeneous in clinical presentation, but a rational and practical approach to diagnosis exists based on new genetic correlations and targeted laboratory investigations. Treatments informed by a still-developing picture of motor pathophysiology offer significant benefit for these disorders. This chapter discusses choreiform disorders, including patterns in choreiform diagnosis; tremor disorders; paroxysmal disorders, including tics and myoclonus; dystonias, including monogenic primary dystonias; and pathophysiology and treatment in the hyperkinetic movement disorders. Figures include clinical photos, computed tomography scans, and an algorithm representing cortical-subcortical circuitry. Tables delineate definitions, distinguishing clinical features, medications, genetics, protein products, and treatments associated with various disorders.  This review contains 6 figures, 12 tables, and 145 references.

scholarly journals Union Rate on Hinge Side after Open-Door Laminoplasty Using Maxillofacial Titanium Miniplate

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Koopong Siribumrungwong ◽  
Theerasan Kiriratnikom ◽  
Boonsin Tangtrakulwanich
Keyword(s):  
Computed Tomography ◽  
Cervical Canal ◽  
Open Door ◽  
Union Rate ◽  
Japanese Orthopedic Association ◽  
Computed Tomography Scans ◽  
Before And After ◽  
The Mean ◽  
Scan Data ◽  
Titanium Miniplate

Background. One of the important complications of open-door laminoplasty is a premature laminoplasty closure. In order to prevent premature laminoplasty closure many techniques have been described and a titanium miniplate is one of the instruments to maintain cervical canal expansion. This study was performed to evaluate the effectiveness of titanium miniplates on the union rate for open-door laminoplasty.Materials and Methods. We performed open-door laminoplasty in 68 levels of fourteen patients using maxillofacial titanium miniplates. Axial computed tomography scans were obtained at 6 months postoperatively to evaluate the union rates of the hinge side. The Japanese Orthopedic Association (JOA) score was used to compare the clinical outcomes before and after surgery.Results. Computed tomography scan data was available on 68 levels in 14 patients. There were no premature closures of the hinge or miniplate dislodgements. The union rate on the hinge side was 70.5% (48/68). The mean JOA score increased significantly from 7.0 before surgery to 10.2, 12.2, and 13.0 after surgery at 1, 3, and 6 months, respectively.Conclusion. Open-door laminoplasty using maxillofacial titanium miniplates can provide union rates comparable to other techniques. It can maintain canal expansion without failures, dislodgements, and premature closures.

Postoperative Changes in Isolated Medial Orbital Wall Fractures Based on Computed Tomography

2017 ◽  
Vol 28 (8) ◽  
pp. 2038-2041 ◽  
Author(s):  
Soyeon Jung ◽  
Jang Won Lee ◽  
Chung Hun Kim ◽  
Euna Hwang ◽  
Hyoseob Lim ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Postoperative Changes ◽  
Orbital Wall ◽  
Medial Orbital Wall

Stackable Carbon Fiber Cages for Thoracolumbar Interbody Fusion After Corpectomy: Long-term Outcome Analysis

Neurosurgery ◽  
2011 ◽  
Vol 68 (3) ◽  
pp. 810-819 ◽  
Author(s):  
Robert F Heary ◽  
Arvin Kheterpal ◽  
Antonios Mammis ◽  
Sanjeev Kumar
Keyword(s):  
Computed Tomography ◽  
Carbon Fiber ◽  
Vertebral Body ◽  
Additional Patient ◽  
Preoperative Imaging ◽  
Plain Films ◽  
Computed Tomography Scans ◽  
The Mean

Abstract BACKGROUND: Reconstruction of the thoracolumbar spine after corpectomy is a challenge for fractures, infections, and tumors. OBJECTIVE: To analyze fusion rates, clinical outcomes, and the percent of vertebral body coverage achieved by using stackable carbon fiber–reinforced polyetheretherketone cages in thoracolumbar corpectomies, and to measure the actual size of the cages and compare this measurement with the size of the vertebra(e) replaced by the cage. METHODS: A retrospective study of 40 patients who underwent thoracolumbar corpectomies was performed. Preoperative imaging included plain films, computed tomography scans, and magnetic resonance imaging. Postoperatively, plain films and computed tomography scans were obtained, and the width of decompression and cross-sectional area of the cage were measured. The ratio of the area of the cage to the calculated area of the replaced vertebral body was used to determine the percent of vertebral body coverage. RESULTS: The mean follow-up period was 43 months. Successful fusion was observed in 39 patients. One patient experienced cage subsidence with kyphosis. One additional patient incurred a neurological complication that was corrected without long-term consequence. The mean correction of sagittal alignment was 10°, and the mean width of bony decompression was 20 mm. The mean ratio of the area of the carbon fiber cage to the area of the resected vertebral body was 60%. CONCLUSION: Stackable carbon fiber cages are effective devices for achieving thoracolumbar fusions. No failures of the cages occurred over long-term follow-up. Excellent clinical and radiographic results were achieved by covering a mean of 60% of the vertebral body with the cage.

scholarly journals Comparison of Imaging Softwares for Upper Airway Evaluation: Preliminary Study

2018 ◽  
Vol 11 (4) ◽  
pp. 273-277
Author(s):  
Guilherme dos Santos Trento ◽  
Lucas Borin Moura ◽  
Rubens Spin-Neto ◽  
Philipp Christian Jürgens ◽  
Marisa Aparecida Cabrini Gabrielli ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Digital Imaging ◽  
Upper Airway ◽  
Cone Beam ◽  
Maxillary Expansion ◽  
Accuracy And Precision ◽  
Significant Difference ◽  
Computed Tomography Scans ◽  
The Mean ◽  
Preliminary Study

The interest about upper airway evaluation has increased lately. Therefore, many softwares have been developed aiming to improve and facilitate the analysis of airway volume. The objective of this study was to compare two different softwares packages, Mimics and Dolphin, in their accuracy and precision in upper airway space measurements. Preoperative cone beam computed tomography scans of nine nonsyndromic patients submitted to surgically assisted rapid maxillary expansion were included in this study. The imaging exams were converted to DICOM (digital imaging and communications in medicine) files and imported to the softwares. The mean volume for the Dolphin group (G1) was 10.791 cm3 (SD = 4.269 cm3) and for the Mimics group (G2) was 10.553 cm3 (SD = 4.564 cm3). There was no statistically significant difference between the two groups ( p = 0.105).

Medial orbital wall protrusion: computed tomography findings

2004 ◽  
Vol 51 (2) ◽  
pp. 69-71 ◽  
Author(s):  
Tuba Karagülle Kendi ◽  
Craig Rodrigez ◽  
Gökhan Kemal ◽  
Yasemin Karadeniz Bilgili ◽  
Sinef Huvaj
Keyword(s):  
Computed Tomography ◽  
Orbital Wall ◽  
Medial Orbital Wall

scholarly journals Endoscopic Endonasal Approach of Orbital Medial Wall Reconstruction using Septal Cartilage: A Rare Surgical Case Report

2015 ◽  
Vol 8 (1) ◽  
pp. 30-33
Author(s):  
MK Rajasekar ◽  
M Vivek ◽  
V Narendrakumar
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Septal Cartilage ◽  
Medial Wall ◽  
Endoscopic Endonasal Approach ◽  
Endonasal Approach ◽  
Endoscopic Endonasal ◽  
Surgical Case ◽  
Orbital Wall ◽  
Medial Orbital Wall

ABSTRACT Orbital fractures can cause facial disfigurement and disturbs vision. Medial orbital wall fractures are diagnosed with frequent use of computed tomography (CT) scans in the diagnosis of orbital trauma. Orbital reconstruction plays a challenging role for the surgeons as it comes in a multitude of different forms. We report a case of 45-year male with a history of assault presented with diminution of vision, restricted abduction and diplopia of the left eye. Computed tomography scan showed fracture of the left medial orbital wall fracture and the patient was treated by endoscopic endonasal approach of medial orbital wall reconstruction using septal cartilage. How to cite this article Rajasekar MK, Vivek M, Narendrakumar V. Endoscopic Endonasal Approach of Orbital Medial Wall Reconstruction using Septal Cartilage: A Rare Surgical Case Report. Clin Rhinol An Int J 2015;8(1):30-33.

scholarly journals Root Canal Transportation after Root Canal Preparation with ProTaper Next, WaveOne Gold, and Twisted Files

2020 ◽  
Vol 9 (11) ◽  
pp. 3661
Author(s):  
Wojciech Eliasz ◽  
Kinga Kubiak ◽  
Wojciech Poncyljusz ◽  
Anna Surdacka
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Mean Value ◽  
Root Canal Preparation ◽  
Movement Kinematics ◽  
Root Canals ◽  
Adaptive Motion ◽  
Computed Tomography Scans ◽  
Canal Transportation ◽  
The Mean

Background: Root canal preparation during endodontic treatment may be associated with various complications, including a change in the original pathway of the root canal lumen. The aim of our study was to determine whether files of similar sizes that use various movement kinematics (rotary, reciprocal, adaptive motion) cause root canal transportation, and whether the differences between such systems are statistically significant. Methods: The degree of root canal transportation (DT) was calculated with the use of computed tomography scans for 3 groups of teeth (for each group: n = 20) in which the root canals were prepared using either rotary (ProTaper Next—PTN), reciprocal (WaveOne Gold—WOG), or adaptive movement (Twisted Files—TF) instruments. Results: For rotary ProTaper Next instruments, the mean value of the DT index was 0.0795 (SD = 0.0179) for 3 mm from the apex, 0.09 (SD = 0.0262) for 6 mm from the apex, and 0.106 (SD = 0.0221) for 9 mm from the apex. For reciprocal WaveOne Gold Primary instruments, the mean value of the DT index was 0.0355 (SD = 0.015) for 3 mm from the apex, 0.061 (SD = 0.02) for 6 mm from the apex, and 0.08 (SD = 0.25) for 9 mm from the apex. For Twisted Files, the mean value of the DT index was 0.05 (SD = 0.03) for 3 mm from the apex, 0.092 (SD = 0.17) for 6 mm from the apex, and 0.08 (SD = 0.02) for 9 mm from the apex. Conclusions: The use of PTN, WOG, and TF files resulted in root canal transportation to a different degree. The use of rotary PTN files produced the most transported preparation, whereas the use of WOG files produced the conservative root canal preparation that allowed the retention of the original shape of the root canal.

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