scholarly journals ‘Orbital volume restoration rate after orbital fracture’; a CT-based orbital volume measurement for evaluation of orbital wall reconstructive effect

Eye ◽  
2017 ◽  
Vol 31 (5) ◽  
pp. 713-719 ◽  
Author(s):  
J M Wi ◽  
K H Sung ◽  
M Chi
Keyword(s):  
Volume Measurement ◽  
Orbital Fracture ◽  
Orbital Volume ◽  
Orbital Wall

Resources: Internet Resources for the Independent Medical Evaluator – 2007

2007 ◽  
Vol 12 (4) ◽  
pp. 4-7
Author(s):  
Christopher R. Brigham ◽  
Jenny Walker
Keyword(s):  
Head Trauma ◽  
Clonic Seizure ◽  
Acute Subdural Hematoma ◽  
Orbital Fracture ◽  
Orbital Wall ◽  
First Occurrence ◽  
One Year ◽  
The One ◽  
Neurological Injuries ◽  
Medial Orbital Wall

Abstract Rating patients with head trauma and multiple neurological injuries can be challenging. The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fifth Edition, Section 13.2, Criteria for Rating Impairment Due to Central Nervous System Disorders, outlines the process to rate impairment due to head trauma. This article summarizes the case of a 57-year-old male security guard who presents with headache, decreased sensation on the left cheek, loss of sense of smell, and problems with memory, among other symptoms. One year ago the patient was assaulted while on the job: his Glasgow Coma Score was 14; he had left periorbital ecchymosis and a 2.5 cm laceration over the left eyelid; a small right temporoparietal acute subdural hematoma; left inferior and medial orbital wall fractures; and, four hours after admission to the hospital, he experienced a generalized tonic-clonic seizure. This patient's impairment must include the following components: single seizure, orbital fracture, infraorbital neuropathy, anosmia, headache, and memory complaints. The article shows how the ratable impairments are combined using the Combining Impairment Ratings section. Because this patient has not experienced any seizures since the first occurrence, according to the AMA Guides he is not experiencing the “episodic neurological impairments” required for disability. Complex cases such as the one presented here highlight the need to use the criteria and estimates that are located in several sections of the AMA Guides.

scholarly journals Posttraumatic Orbital Emphysema: A Numerical Model

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Andrzej Skorek ◽  
Paweł Kłosowski ◽  
Łukasz Plichta ◽  
Dorota Raczyńska ◽  
Marcin Zmuda Trzebiatowski ◽  
...  
Keyword(s):  
Elevated Pressure ◽  
Orbital Fracture ◽  
Common Symptom ◽  
Inferior Wall ◽  
Finite Model ◽  
Upper Airways ◽  
Numeric Model ◽  
Orbital Emphysema ◽  
Orbital Wall ◽  
Resilience Modulus

Orbital emphysema is a common symptom accompanying orbital fracture. The pathomechanism is still not recognized and the usually assumed cause, elevated pressure in the upper airways connected with sneezing or coughing, does not always contribute to the occurrence of this type of fracture. Observations based on the finite model (simulating blowout type fracture) of the deformations of the inferior orbital wall after a strike in its lower rim. Authors created a computer numeric model of the orbit with specified features—thickness and resilience modulus. During simulation an evenly spread 14400 N force was applied to the nodular points in the inferior rim (the maximal value not causing cracking of the outer rim, but only ruptures in the inferior wall). The observation was made from1·10-3to1·10-2second after a strike. Right after a strike dislocations of the inferior orbital wall toward the maxillary sinus were observed. Afterwards a retrograde wave of the dislocation of the inferior wall toward the orbit was noticed. Overall dislocation amplitude reached about 6 mm. Based on a numeric model of the orbit submitted to a strike in the inferior wall an existence of a retrograde shock wave causing orbital emphysema has been found.

scholarly journals Preliminary Outcomes Following Application Of The Real-Time Navigation System Combined With Intraoperative Three-Dimensional C-Arm Computed Tomography For Zygomatico-Orbital Fracture Reconstruction

2021 ◽  
Author(s):  
Yu-Ying Chu ◽  
Jia-Ruei Yang ◽  
Han Tsung Liao ◽  
Bo-Ru Lai
Keyword(s):  
Computed Tomography ◽  
Real Time ◽  
Navigation System ◽  
Surgical Navigation ◽  
Three Dimensional ◽  
Orbital Fracture ◽  
The Real ◽  
Orbital Volume ◽  
Surgical Navigation System ◽  
The Mean

Abstract This study analyzed the outcomes of zygomatico-orbital fracture reconstruction using the real-time navigation system with intraoperative three-dimensional (3D) C-arm computed tomography (CT). Fifteen patients with zygomatico-orbital or isolated orbital/zygoma fractures were enrolled in this prospective cohort. For zygoma reduction, the displacement at five key sutures and the differences between preoperative and intraoperative CT images were compared. For orbital reconstruction, the bilateral orbital volume differences in the anterior, middle, and posterior angles over the medial transitional buttress were measured. Two patients required implant adjustment once after the intraoperative 3D C-arm assessment. On comparing the preoperative and postoperative findings for the zygoma, the average sum of displacement was 19.48 (range, 5.1–34.65) vs. ±1.96 (0–3.95) mm (P < 0.001) and the deviation index was 13.56 (10–24.35) vs. 2.44 (0.6–4.85) (P < 0.001). For the orbit, the mean preoperative to postoperative bilateral orbital volume difference was 3.93 (0.35–10.95) vs. 1.05 (0.12–3.61) mm3 (P <0.001). The mean difference in the bilateral angles at the transition buttress was significantly decreased postoperatively at the middle and posterior one-third. The surgical navigation system with the intraoperative 3D C-arm can effectively improve the accuracy of zygomatico-orbital fracture reconstruction and decrease implant adjustment times.

scholarly journals Predictors and Significance of Orbital Fracture in Traumatic Brain Injury

2020 ◽  
Vol 2 (1) ◽  
pp. 18-22
Author(s):  
Karuna Tamrakar Karki ◽  
Pankaj Raj Nepal
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Head Injury ◽  
Visual Loss ◽  
Orbital Fracture ◽  
Subconjunctival Hemorrhage ◽  
Number Of Patients ◽  
Orbital Wall ◽  
Ct Head ◽  
Time Of Presentation

Background and purpose: Orbital manifestation in traumatic brain injury though uncommon, is one of the major complications of traumatic brain injury that has to be addressed judiciously to prevent permanent visual loss. Material and Methods: 211 patients who underwent CT for traumatic brain injury in between September to December 2019 were prospectively examined for the orbital manifestation. Patients who had undergone CT head including orbit with 3D face RECON were only included in our study to remove the bias between fracture line and suture in plain CT scan. CT imaging was evaluated to identify and subtype the orbital fracture.  Results: Total number of patients was 28, with mean age of 33.82 (SD 17.15) years. Majority of the patients were male which accounted 79% of sample size. There was 78% mild head injury followed by 18% and 4% moderate and severe head injury respectively. The most common type involved among all were blow out fracture and lateral orbital wall fracture. Clinically vision was abnormally around 21% of the cases, abnormal papillary reaction was seen in 25% of the cases around 93% of the cases had raccoon eye at the time of presentation. There was proptosis in around 14% of the patients and subconjunctival hemorrhage was seen in around 93% of the cases. Around 79% of the patients had intact vision at the time of presentation and 3.6% of the patients improved their vision during the course of treatment. Complete globe disruption who required evisceration of the eyeball was 10.7% and those who had abnormal vision at the time of presentation, 7.1% that did not improve their vision. Conclusions: orbital manifestations with either type of orbital fracture in traumatic brain injury are useful for the prediction of severity of orbital injury and its clinical outcome. This helps to identify patients in high risk and start early treatment to prevent permanent visual loss.

scholarly journals Proper Imaging Modality in Medial Orbital Wall and Blowout Fracture

2020 ◽  
Vol 36 (1) ◽  
Author(s):  
Yunia Irawati ◽  
Carennia Paramita ◽  
Dian Farikha
Keyword(s):  
Ct Scan ◽  
Imaging Modality ◽  
Orbital Fracture ◽  
Movement Restriction ◽  
Eyelid Margin ◽  
X Ray ◽  
Blowout Fracture ◽  
Orbital Wall ◽  
Ocular Movement ◽  
The Right

A 27-year-old man was first seen 4 weeks after his right eye being accidently hit by branches of tree. He complained of diplopia which was significant on the right gaze. There were partial thickness superior and inferior eyelid rupture and full thickness superior eyelid margin laceration (which got repaired), hematoma, and swelling of the right eye. Orbital x-ray demonstrated no abnormality. However, orbital CT Scan was eventually obtained and it showed medial wall and orbital floor fracture of the right eye, hence, we planned to do the reconstruction of orbital fracture. We concluded that patient with severe soft tissue swelling, unclear ocular movement restriction and diplopia with normal orbital X-ray should undergo orbital CT scan, as it is the best radiologic imaging in establishing an orbital wall fracture. This case report will discuss the importance on determining a proper imaging modality in blowout fracture.

scholarly journals Risk prediction of posttraummatic enophthalmos development on the basis of orbital volume calculations using multislice computed tomography data

2018 ◽  
Vol 11 (3) ◽  
pp. 26-33
Author(s):  
Dmitriy V. Davydov ◽  
Natalya S. Serova ◽  
Ol'ga Yu. Pavlova
Keyword(s):  
Computed Tomography ◽  
Surgical Treatment ◽  
Prognostic Factor ◽  
Multislice Computed Tomography ◽  
Volume Measurement ◽  
Slice Thickness ◽  
Orbital Trauma ◽  
Orbital Volume ◽  
Additional Information ◽  
The Difference

Purpose. To elaborate a method of orbital volume measurement in patients with midface trauma at pre- and postoperative stages on the basis of multislice computed tomography (MSCT); to investigate the capabilities of orbital volume measurement to acquire additional diagnostic information and to estimate the risk of postoperative enophthalmos development. Materials and methods. A total of 71 patients (100%) with midface trauma were examined at the Sechenov University clinic. At pre- and postoperative stages, all patients (n = 71, 100%) were examined using MSCT (Toshiba Aquilion One 640) with 0.5 mm slice thickness in bone and soft tissue regimen. To measure orbital volume, MSCT data were processed using Vitrea workstation: bone borders of the right and left orbit were marked before and after surgical treatment on every axial slice, and orbital volumes were presented in ml. Results. Preoperative MSCT data management revealed increased orbital volume due to orbital trauma in 64 patients (90%), the difference between healthy and traumatized orbit was between 2 ml and 14 ml. In these patients, reconstructive surgical procedure was performed. In 7 patients (10%) with mild midface trauma, the difference between orbital volumes was less than 2 ml, this was considered as a positive prognostic factor, and these patients were not subjects to surgical treatment. After surgery, in 55 patients (77%) the orbital volume restored, the difference between orbital volumes was less than 2 ml. In 9 cases (13%), the difference in orbital volume was more than 2 ml, considered as adverse prognostic factor which means that there still was a risk of postoperative enophthalmos development. In this patient group, additional diagnostic examination was necessary, and patients required planning of residual enophthalmos surgical correction with MSCT control during the post-op period. Conclusion. Postprocessing of the MSCT data gave the possibility to calculate pre-and postoperative orbital volume changes and present it in mathematical units (ml) in 3D mode. As the result the additional information can be acquired in order to identify the risk of postoperative enophthalmos.

Model-based segmentation in orbital volume measurement with cone beam computed tomography and evaluation against current concepts

2015 ◽  
Vol 11 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Maximilian E. H. Wagner ◽  
Nils-Claudius Gellrich ◽  
Karl-Ingo Friese ◽  
Matthias Becker ◽  
Franz-Erich Wolter ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Volume Measurement ◽  
Cone Beam ◽  
Orbital Volume ◽  
Model Based

Clinical Application of a Specific Simulation Software for 3-Dimensional Orbital Volume Modeling for Orbital Wall Reconstruction

2019 ◽  
Vol 83 (1) ◽  
pp. 48-54
Author(s):  
Min Ji Kim ◽  
Woo Shik Jeong ◽  
Yun Hwan Kim ◽  
Hannah Kim ◽  
Hyunchul Cho ◽  
...  
Keyword(s):  
Clinical Application ◽  
Simulation Software ◽  
3 Dimensional ◽  
Orbital Volume ◽  
Orbital Wall ◽  
Volume Modeling
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