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1.
J Craniofac Surg ; 35(5): 1531-1536, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38861339

RESUMO

Literature describes variable rates of diplopia of associated with zygomatic maxillary complex (ZMC) fractures (6% to 40%). The aim of this study was to retrospectively assess the prevalence of diplopia in ZMC fracture patients, the usefulness of the orthoptic evaluation compared with the clinical finger-tracking examination, and to seek possible relations of this symptom with clinical parameters. Data of patients attending the Maxillofacial Surgery Units of the University of Messina and University of Naples "Federico II", between January 2012 and December 2022 were retrieved. Statistical analysis of positive versus negative diplopia at both the clinical examination and the orthoptic evaluation and subgroup analysis were performed. 320 patients were included in the analysis. 50 (15.6%) patients reported diplopia at the clinical examination, whereas 70 (21.9%) resulted positive at the orthoptic evaluation. Statistical analysis for every determinant and subgroup did not show statistical significance ( P >0.05). Performing routine preoperative orthoptic evaluation allowed an increase of 6.3% in positive reports. Although it seems that no basic clinical parameter can predict diplopia, results suggest that the orthoptic evaluation is superior in the assessment of this symptom. Clinical analysis was shown to be a moderate/low efficient test and should not be used as a decisional standard.


Assuntos
Diplopia , Fraturas Zigomáticas , Humanos , Diplopia/diagnóstico , Diplopia/etiologia , Masculino , Feminino , Estudos Retrospectivos , Adulto , Pessoa de Meia-Idade , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Maxilares/diagnóstico por imagem , Idoso , Adolescente , Prevalência , Adulto Jovem , Relevância Clínica
2.
J Craniomaxillofac Surg ; 52(5): 606-611, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38448338

RESUMO

Our study aimed to evaluate modified patient-specific surgical-guide-assisted precise treatment of unilateral comminuted zygomaticomaxillary complex (ZMC) fractures. The retrospective non-randomized study was conducted in a single hospital in China. All patients diagnosed with unilateral comminuted ZMC fractures between January 1, 2018 and December 31, 2022 were retrospectively reviewed. All patients underwent preoperative spiral computed tomography (CT). CT data were processed using software to DICOM format and transferred to Proplan CMF3.0 for preoperative virtual surgical planning and postoperative evaluation. All data were extracted from standardized electronic medical records. All statistical analyses were performed using SPSS version 20.0. The chi-square test and t-test were used for statistical analyses. The 54 included patients were divided into two comparable, equal cohorts of 27 patients, and followed up for at least 6 months. Fracture reduction was assisted using the modified patient-specific surgical guides in the guide group (23 males, four females; mean age 37.74 ± 12.07 years) and without the modified patient-specific surgical guides in the control group (20 males, seven females; mean age 37.44 ± 13.58 years). In the guide group, the mean eminence deviation between the affected and unaffected sides was 1.01 ± 0.92 mm, and the mean width deviation between the affected and unaffected sides was 1.29 ± 1.32 mm. In the control group, the mean eminence deviation between the affected and unaffected sides was 1.99 ± 1.69 mm, and the mean width deviation between the affected and unaffected sides was 2.68 ± 2.01 mm. The differences in facial protrusion (p = 0.001) and width (p = 0.003) symmetry between the affected and healthy sides of the two groups were statistically significant (p < 0.05). In conclusion, applying the modified patient-specific surgical guides to unilateral comminuted zygomaticomaxillary complex fracture reduction has the advantages of greater predictability and effectiveness, and improved bilateral ZMC symmetry. It should be noted that this approach would be especially beneficial for less-experienced surgeons.


Assuntos
Fraturas Cominutivas , Fraturas Maxilares , Cirurgia Assistida por Computador , Fraturas Zigomáticas , Humanos , Estudos Retrospectivos , Masculino , Feminino , Fraturas Zigomáticas/cirurgia , Fraturas Zigomáticas/diagnóstico por imagem , Adulto , Fraturas Cominutivas/cirurgia , Fraturas Cominutivas/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Fraturas Maxilares/diagnóstico por imagem , Pessoa de Meia-Idade , Cirurgia Assistida por Computador/métodos , Tomografia Computadorizada Espiral , Imageamento Tridimensional/métodos , Fixação Interna de Fraturas/métodos , Fixação Interna de Fraturas/instrumentação
3.
J Craniofac Surg ; 35(5): e414-e418, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38408330

RESUMO

Gillies temporal approach has been widely used to reduce zygoma fractures. Traditionally, it is the preferred method to reduce the isolated zygomatic arch fracture. It can be combined with other approaches, such as subciliary and intraoral incisions for more complex zygomatic fractures, so-called tripod fractures. In this study, the author hypothesized that complex zygomaticomaxillary bone fracture reduction can successfully be achieved without Gillies temporal incision. The author retrospectively analyzed the medical records and 3D facial Computed Tomography (CT) scans of 80 patients who had orbitozygomaticomaxillary fractures that affected >3 sites among the frontozygomatic suture, zygomaticomaxillary buttress, zygomatic arch, and orbital walls from May 2021 to August 2023. A single surgeon performed all surgical operations. All fractures were reduced with 2 incisions, lower eyelid incisions (subciliary or subconjunctival) and intraoral incisions (gingivobuccal approach), within a week of the initial traumatic event. After sufficient exposure to fractured sites using 2 incisions, the author reduced the fracture with a bony hook at the inferior orbital rim, lateral wall, or Boise elevator at the intraoral incision. All cases were successfully corrected without any complications. In conclusion, the author can successfully reduce complex zygomaticomaxillary fracture combined with orbital wall fractures without temporal Gillies approach.


Assuntos
Fraturas Maxilares , Fraturas Orbitárias , Tomografia Computadorizada por Raios X , Fraturas Zigomáticas , Humanos , Fraturas Zigomáticas/cirurgia , Fraturas Zigomáticas/diagnóstico por imagem , Estudos Retrospectivos , Masculino , Feminino , Fraturas Orbitárias/cirurgia , Fraturas Orbitárias/diagnóstico por imagem , Adulto , Pessoa de Meia-Idade , Fraturas Maxilares/cirurgia , Fraturas Maxilares/diagnóstico por imagem , Adolescente , Adulto Jovem , Imageamento Tridimensional , Fixação Interna de Fraturas/métodos , Resultado do Tratamento
4.
BMC Oral Health ; 24(1): 15, 2024 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-38178180

RESUMO

BACKGROUND: One-point fixation was superior to the two and three-points fixation in minimally displaced zygomaticomaxillary complex (ZMC) fracture regarding the cost, invasiveness, scaring, number of wounds, and operation time. Accordingly, this study aimed to predict which one-point fixation is the most stable in managing minimally displaced ZMC fracture. MATERIAL & METHODS: This study simulated the different one-point fixation approaches on three ZMC models after fracture reduction and application of all forces exerted on the fractured area. The findings were represented as stress impact on the ZMC fracture and plating system as well as the inter-fragments micro-motion. RESULTS: The von misses stresses of plates for the zygomaticofrontal, infra-orbital rim, and zygomaticomaxillary buttress model were (66.508, 1.285, and1.16 MPa) respectively. While the screws' von misses for the infraorbital rim, zygomaticofrontal, and zygomaticomaxillary buttress models were (13.8, 4.05, and 1.60 MPa) respectively. Whereas, the maximum principles stress at zygomaticofrontal, zygomaticomaxillary buttress, and infraorbital rim models were (37.03, 37.01, and 34.46 MPa) respectively. In addition, the inter-fragment micro-motion for zygomaticomaxillary buttress, infraorbital rim, and zygomaticofrontal models were (0.26, 0.25, and 0.15 mm) respectively. CONCLUSION: One-point fixation at zygomaticomaxillary buttress is the preferred point because it is exposed to low stresses, and the inter-fragment micro-motion is within the approved limit with the elements in the same direction of fixation which indicates the rigid fixation. In addition, it is less palpable and scarless. TRIAL REGISTRATION: clinical trial.gov (NCT05819372) at 19/04/2023.


Assuntos
Fraturas Maxilares , Fraturas Zigomáticas , Humanos , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia , Fixação Interna de Fraturas , Análise de Elementos Finitos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Tomografia Computadorizada por Raios X
5.
J Craniofac Surg ; 34(8): 2252-2256, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37485955

RESUMO

A sagittal fracture at the temporal root of the zygomatic arch (ZAR) often occurs as a component of zygomaticomaxillary complex (ZMC) fractures. However, this area is difficult to access, and anchorage is limited due to the unstable structure around it. Therefore, a preauricular approach using single-screw fixation is proposed, and this study reports its results and usefulness. Forty-four patients with sagittal fractures of ZAR occurring with ZMC fractures were evaluated from 2012 to 2021. Open reduction and internal fixation were performed on all patients with ZMC fractures. Closed reduction using Dingman incision and external finger pressure in group A (indirect approach; 30 patients) and single-screw fixation using a preauricular approach in group B (direct approach; 14 patients) were performed to address sagittal fractures in ZAR. For single-screw fixation, the additional mean operation time was 11.34±3.25 minutes. On postoperative 3-dimensional computed tomography and plain radiographs, group B showed more accurate reduction and less deformity and trismus ( P <0.05). Moreover, a normal diet was initiated more quickly in group B than in group A ( P <0.05). Some cases in group A showed nonunion or malunion. This study revealed that a direct approach (group B) toward sagittal fractures of ZAR is recommended due to more accurate results and fewer complications than those observed with the indirect approach (group A). Moreover, the total operation time and complications may be lesser than those with the bicoronal approach.


Assuntos
Fraturas Maxilares , Fraturas Zigomáticas , Humanos , Zigoma/diagnóstico por imagem , Zigoma/cirurgia , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia , Fixação Interna de Fraturas/métodos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Tomografia Computadorizada por Raios X , Estudos Retrospectivos
6.
Oral Maxillofac Surg Clin North Am ; 35(4): 563-575, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37302948

RESUMO

Fractures of the pediatric midface are infrequent, particularly in children in the primary dentition, due to the prominence of the upper face relative to the midface and mandible. With downward and forward growth of the face, there is an increasing frequency of midface injuries seen in children in the mixed and adult dentitions. Midface fracture patterns seen in young children are quite variable; those in children at or near skeletal maturity mimic patterns seen in adults. Non-displaced injuries can typically be managed with observation. Displaced fractures require treatment with appropriate reduction and fixation and longitudinal follow-up to evaluate growth.


Assuntos
Fraturas Maxilares , Fraturas Cranianas , Fraturas Zigomáticas , Adulto , Humanos , Criança , Pré-Escolar , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Fraturas Cranianas/diagnóstico por imagem , Fraturas Cranianas/cirurgia , Mandíbula , Tomografia Computadorizada por Raios X
8.
Pan Afr Med J ; 41: 309, 2022.
Artigo em Francês | MEDLINE | ID: mdl-35855048

RESUMO

Introduction: facial injuries are a public health problem, both physically and psychologically, characterized by a variety of injuries and sometimes by severe esthetic or functional sequelae. The purpose of this study was to describe the epidemiological and tomodensitometric aspects of maxillofacial fractures in Mopti. Methods: we conducted a cross-sectional and descriptive study in the Department of Radiology of the Mopti Hospital from January 2019 to December 2019. All patients who had undergone maxillofacial CT scan for a trauma with fracture confirmed by CT scan during this period were included. The variables analyzed were age, sex, etiology and the types of fractures observed on CT scan. Data recording and analysis were carried out using SPSS version 20 and Excel 2013. Results: of a total of 120 patients, the mean age was 26.43 years with a standard deviation of 14.547. Men predominated (75%; n= 90). Road accidents were the leading cause of fractures (50%; n = 60). Occlusofacial fractures accounted for 38.33% (n= 46). Lefort II was the most common fracture (22.50%; n= 27). Conclusion: this study allowed us to identify the population groups most affected by maxillofacial fractures in the Mopti region: adolescents and young adults. Tomodensitometric results were dominated by occlusofacial fractures, in particular Lefort type II fractures.


Assuntos
Fraturas Maxilares , Traumatismos Maxilofaciais , Fraturas Cranianas , Acidentes de Trânsito , Adolescente , Adulto , Estudos Transversais , Humanos , Masculino , Mali/epidemiologia , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/epidemiologia , Fraturas Maxilares/etiologia , Traumatismos Maxilofaciais/diagnóstico por imagem , Traumatismos Maxilofaciais/epidemiologia , Traumatismos Maxilofaciais/etiologia , Estudos Retrospectivos , Fraturas Cranianas/diagnóstico por imagem , Fraturas Cranianas/epidemiologia , Fraturas Cranianas/etiologia , Tomografia Computadorizada por Raios X/efeitos adversos , Adulto Jovem
9.
Br J Oral Maxillofac Surg ; 60(4): 397-411, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35272868

RESUMO

Management of zygomaticomaxillary complex (ZMC) fractures can be challenging. Consequently, there is a difference in treatment amongst clinicians. In the literature it remains unclear if the number of fixation points affects the quality of the anatomical reduction, stability through time, and potential complications. Therefore, the objective of this study was to assess the outcome of no fixation, one-point fixation and multiple-point fixation of ZMC fractures. MEDLINE, EMBASE and The Cochrane Central Register of Controlled Trials were searched to identify eligible studies. After screening 925 articles, 17 studies fulfilled the inclusion criteria. Based on this systematic review no clear conclusions can be drawn on how stability, repositioning, and postoperative complications are affected by the number of fixation points. Nevertheless, it can be concluded that the advantage of multiple approaches is direct visualisation, and the downside is potentially approach-related complications. This review suggests that intraoperatively assisted cone-beam computed tomography (CBCT) can help improve the quality of the repositioning and by minimising the number of fixation points, the number of postoperative complications could be further reduced.


Assuntos
Fraturas Maxilares , Fraturas Zigomáticas , Tomografia Computadorizada de Feixe Cônico , Fixação Interna de Fraturas/métodos , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Complicações Pós-Operatórias , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
10.
Emerg Radiol ; 29(3): 499-505, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35266070

RESUMO

BACKGROUND: Clinicians who manage facial fractures often rely on radiologist interpretations to help with assessment and management. Among treating physicians, facial fractures are categorized into clinically relevant patterns of injury. On the other hand, while radiologists are unsurpassed at identifying individual breaks in the bone, larger fracture patterns are not always conveyed in radiology reports. PURPOSE: This study aims to assess the frequency with which the terminology describing midfacial fracture patterns is concordant among radiologists and treating clinicians. METHODS: The authors identified patients with different patterns of midfacial injury including Le Fort I, Le Fort II, Le Fort III, naso-orbito-ethmoid (NOE), and zygomaticomaxillary complex (ZMC) fractures. Plastic surgery consult notes and radiological imaging reports were reviewed for concordance in documentation of injury patterns. Identification of individual fractures consistent with the diagnosed fracture pattern was also recorded. RESULTS: Radiologists were noted to be highly successful in describing individual fractures of the facial bones, identifying at least two defining components of a fracture pattern in 96% of Le Fort, 88% of NOE, and 94% of ZMC injuries. However, when injury patterns were considered, only 32% of Le Fort, 28% of ZMC, and 6% of NOE fractures were explicitly identified in radiology reports. CONCLUSIONS: Radiologists are highly skilled in discerning individual fractures in facial trauma cases. However, less reliability was seen in the identification of fracture patterns in midfacial injury, with particular weaknesses in descriptions of NOE and ZMC fractures. This data suggests that greater focus on patterns of midfacial injury would improve the clinical applicability of radiological reports.


Assuntos
Traumatismos Faciais , Fraturas Maxilares , Fraturas Cranianas , Cirurgiões , Ossos Faciais/diagnóstico por imagem , Ossos Faciais/lesões , Ossos Faciais/cirurgia , Traumatismos Faciais/diagnóstico por imagem , Humanos , Fraturas Maxilares/diagnóstico por imagem , Radiologistas , Reprodutibilidade dos Testes , Fraturas Cranianas/diagnóstico por imagem
11.
Int J Oral Maxillofac Surg ; 51(9): 1180-1187, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34961645

RESUMO

Accurate reduction is of vital importance in the treatment of zygomaticomaxillary complex (ZMC) fractures. Computer-assisted navigation systems (CANS) have been employed in ZMC fractures to improve the accuracy of surgical reduction. However, randomized controlled trials on this subject are rare and the benefits of CANS remain controversial. The aim of this study was to compare reduction errors between navigation-aided and conventional surgical treatment for ZMC fractures. Thirty-eight patients with unilateral type B ZMC fractures were enrolled. Preoperative computed tomography data were imported into ProPlan software for virtual surgical planning. Open reduction and internal fixation was performed with CANS (experimental group) or without CANS (control group). Postoperative computed tomography scans were obtained to examine the difference between surgical planning and the actual postoperative outcome, namely reduction errors. The median translational reduction errors in the X, Y, and Z axes were 0.80 mm, 0.40 mm, and 0.80 mm, respectively, in the experimental group and 0.53 mm, 0.86 mm, and 0.83 mm, respectively, in the control group (P > 0.05). The median rotational reduction errors in pitch, roll, and yaw were 0.92°, 2.47°, and 1.54°, respectively, in the experimental group and 1.45°, 3.68°, and 0.76°, respectively, in the control group (P > 0.05). In conclusion, compared with conventional reduction surgery, navigation-aided surgery showed no significant improvement in reduction accuracy in the treatment of type B ZMC fractures (Chinese Clinical Trial Registry, registration number ChiCTR1800015559).


Assuntos
Fraturas Maxilares , Procedimentos de Cirurgia Plástica , Cirurgia Assistida por Computador , Fraturas Zigomáticas , Fixação Interna de Fraturas/métodos , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Ensaios Clínicos Controlados Aleatórios como Assunto , Cirurgia Assistida por Computador/métodos , Tomografia Computadorizada por Raios X/métodos , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
12.
Ear Nose Throat J ; 101(2): NP45-NP49, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32757996

RESUMO

OBJECTIVE: To study anterior nasal spine fractures, including the incidence, missed diagnosis rates, and relationship with shapes using computed tomography (CT). METHODS: Two hundred cases of axial CT images performed for maxillofacial trauma were reviewed. The incidence, correct, and missed diagnosis rates of anterior nasal spine fractures were studied. The relationship between the fracture and the shape of the anterior nasal spine was also analyzed. RESULTS: The rate of anterior nasal spine fractures was 22.00% (44 of 200). The diagnostic accuracy was 4.55% (2 of 44) and the missed diagnosis rate was 95.45% (42 of 44). The fracture rates of the double rod, single rod, triangle, and irregular anterior nasal spine were 33.85% (22 of 65), 32.26% (10 of 31), 12.24% (12 of 98), and 0.00% (0 of 6), respectively. The double and single rod types of anterior nasal spine were most likely to be fractured than the type of triangle (χ2 = 11.05, 6.67, P < .0167). No fracture was found in the irregular type of anterior nasal spine. CONCLUSION: Anterior nasal spine fractures are not rare and the high missed diagnostic rate results from unfamiliarity with the structure. Double and single rod types of anterior nasal spines are easy to fracture. Bony reconstruction and thin thickness of CT images are necessary for diagnosis.


Assuntos
Fraturas Maxilares/diagnóstico por imagem , Nariz/diagnóstico por imagem , Nariz/lesões , Tomografia Computadorizada por Raios X , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Incidência , Masculino , Maxila/anatomia & histologia , Maxila/diagnóstico por imagem , Fraturas Maxilares/epidemiologia , Fraturas Maxilares/etiologia , Pessoa de Meia-Idade , Diagnóstico Ausente , Nariz/anatomia & histologia , Adulto Jovem
13.
J Craniomaxillofac Surg ; 50(1): 54-60, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34600816

RESUMO

The aim of this study was to evaluate the value of intraoperative conebeam computed tomography (CBCT) imaging in the treatment of zygomaticomaxillary complex (ZMC) fractures. A prospective single center cohort study was performed. Included were consecutive patients who underwent surgery for a unilateral ZMC fracture. An intraoperative CBCT scan was performed after reduction of the ZMC fracture. Revision reduction was performed of the ZMC and/or orbital floor (OF) on indication. The preoperative and postoperative asymmetry of the outer surface of the ZMC was measured on digital 3D-models of CBCT scans, using a mirroring and surface-based matching technique. The postoperative asymmetry of the ZMC in the study group was compared to the asymmetry of the ZMC in the control group with healthy individuals. A total of 38 patients with a unilateral ZMC fracture were included. The mean postoperative asymmetry in the study group (1.67 mm, SD 0.89) was less than the mean preoperative asymmetry (2.69 mm, SD 0.95) (paired samples T-test p < 0.01) but showed no statistically significant difference with the mean asymmetry in the healthy control group (1.40 mm, SD 0.54) (independent samples T-test p = 0.31). Revision reduction of the ZMC and/or OF fracture had been performed in 11 cases after malalignment was noted on the intraoperative CBCT. The indication for intraoperative revision reduction was associated with comminuted ZMC fractures and/or fractures with indication for OF reduction (Pearson Chi Square p < 0.01). Within the limitations of the study, intraoperative CBCT imaging seemed to have a positive influence on ZMC fracture treatment, especially in the case of comminuted ZMC fractures and/or fractures with indication for OF treatment.


Assuntos
Fraturas Maxilares , Tomografia Computadorizada de Feixe Cônico Espiral , Fraturas Zigomáticas , Estudos de Coortes , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Estudos Prospectivos , Estudos Retrospectivos , Tomografia Computadorizada por Raios X , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
14.
J Craniofac Surg ; 33(4): e370-e373, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-34538796

RESUMO

ABSTRACT: This study aimed to assess the zygomaticosphenoidal (ZS) angle in patients with reducted unilateral zygomatico-maxillary complex (ZMC) fracture and compare it with the normal control group. This study was performed on CT images of 60 cases and 60 controls with a mean age of 35.1 ±â€Š14.6. The ZS angle was measured on axial images containing the equator of the eyeball. Moreover, the mean absolute difference value and asymmetry index were calculated. Chi-square test, independent-sample t test, 1-way ANOVA, paired-sample t test, and ROC curve analysis were applied. The mean ZS angle in the control group was 46.6°â€Š±â€Š3.5°. Considering laterality, the mean of ZS was not significant in the control group. However, after reduction of unilateral ZMC fracture, there was a significant difference between the mean ZS angle in right and left sides. The mean absolute difference between right and left ZS angles was significantly higher in the case group. A threshold number of 0.9° is established in the mean absolute difference value which is the difference between the right and left ZS angles in an individual for detecting asymmetry. The ZS angle can be a useful anatomical aid to guide surgeons in achieving facial symmetry in ZMC fractures.


Assuntos
Fraturas Maxilares , Procedimentos de Cirurgia Plástica , Fraturas Zigomáticas , Adulto , Distribuição de Qui-Quadrado , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Ortognáticos , Curva ROC , Tomografia Computadorizada Espiral , Adulto Jovem , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
15.
J Craniofac Surg ; 33(4): 1230-1235, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-34907945

RESUMO

PURPOSE: Reduction of the bilateral zygomaticomaxillary complex (ZMC) fracture with individualized templates based on computer- aided surgical simulation system. To evaluate the practicality and accuracy of this approach in the treatment of bilateral ZMC fracture. METHODS: Sixteen patients with bilateral ZMC fractures were collected to create a study model. The authors reconstruct the ZMC on one side via the three-dimensional (3D) model, and then mirrored to the opposite side. Multiple individualized templates were made based on the 3D model, and used as intraoperative guidance to reduce fractures. After surgery, the facial symmetry and the position of zygoma were observed. The mouth opening, pupil level, and sensation of infraorbital nerve were evaluated. Some mark points on zygoma were measured and the postoperative horizontal asymmetry rate (H) was calculated. Besides, orbital height and width were measured. RESULTS: For all patients, the position of bilateral ZMC was basically restored. The patients with restriction of mouth opening all recovered to normal. The H values were less than 3.0% at all mark points. There was almost no difference in bilateral orbital width and height. Meanwhile, there was no significant difference between the preoperative measurements of the ideal virtual 3D model and the postoperative measurements of patients. CONCLUSIONS: The study proves that application of computer-aided design and individualized templates can accurately guide the reduction operation of ZMC fracture, restore the ideal shape of ZMC, and obtain good facial symmetry.


Assuntos
Fraturas Maxilares , Procedimentos de Cirurgia Plástica , Fraturas Zigomáticas , Desenho Assistido por Computador , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Zigoma/cirurgia , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
16.
J Craniofac Surg ; 33(5): 1474-1478, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34864750

RESUMO

OBJECTIVE: To develop a reliable and accurate method to quantify the symmetry of the zygomaticomaxillary complex (ZMC). METHODS: Virtual three-dimensional models were created from 53 computed-tomography scans: 15 healthy cases without maxillofacial disorders and 38 patients with ZMC fractures requiring surgical treatment.Asymmetry of the ZMC was measured using a mirroring and surface-based matching technique that uses the anterior cranial fossa as reference to determine the symmetrical position of the ZMC. The measure for ZMC asymmetry was defined as mean surface distance (MSD) between the ZMC-surface and the symmetrical position.Reliability of the method was tested in the 15 healthy cases. Inter-and intra-observer correlation coefficients (Ce) and variabilities were assessed. Accuracy was assessed by comparing ZMC asymmetry between healthy and ZMC fracture cases, and by assessing correlation of ZMC fracture severity with ZMC asymmetry. RESULTS: The average MSD of the 15 healthy cases was 1.40 ± 0.54 mm and the average MSD of the 38 ZMC fracture cases was 2.69 ± 0.95 mm ( P < 0.01). Zygomaticomaxillary complex asymmetry correlated with fracture severity ( P = 0.01). Intra-rater CC was 0.97 with an intra-rater variability of 0.09 ± 0.11 mm. Inter-rater Ce was 0.95 with an inter-rater variability of 0.12 ± 0.13 mm. CONCLUSIONS: Our method is reliable and accurate for quantitative three-dimensional analysis of ZMC-symmetry. It takes into account asymmetry caused by the shape of the ZMC as well as asymmetry caused by the position of the ZMC. CLINICAL RELEVANCE: This method is useful for the evaluation of ZMC asymmetry associated with congenital and acquired disorders of craniofacial skeleton, for surgical planning and for evaluation of postoperative results.


Assuntos
Fraturas Maxilares , Fraturas Zigomáticas , Humanos , Maxila , Fraturas Maxilares/complicações , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Reprodutibilidade dos Testes , Projetos de Pesquisa , Tomografia Computadorizada por Raios X/métodos , Fraturas Zigomáticas/complicações , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
17.
BMJ Case Rep ; 14(1)2021 Jan 28.
Artigo em Inglês | MEDLINE | ID: mdl-33509889

RESUMO

Electronic cigarettes (also known as e-cigarettes or electronic nicotine delivery systems) were invented in China in 2003 then introduced to the British market in 2007. They remain popular among the public and are deemed to be effective in reducing tobacco smoking (the UK being one of the first countries to embrace them in a harm reduction policy). However, reports in the media of e-cigarettes exploding are of concern, considering the potential functional and psychological impairment that lifelong disfigurement will cause, especially given their uptake among people of any age. We present a case of this rare, but dramatic, effect of e-cigarette use as a warning to the public.


Assuntos
Queimaduras/etiologia , Sistemas Eletrônicos de Liberação de Nicotina , Explosões , Fraturas Cominutivas/etiologia , Fraturas Maxilares/etiologia , Fraturas dos Dentes/etiologia , Fraturas Cominutivas/diagnóstico por imagem , Humanos , Imageamento Tridimensional , Masculino , Fraturas Maxilares/diagnóstico por imagem , Traumatismos Maxilofaciais/diagnóstico por imagem , Traumatismos Maxilofaciais/etiologia , Mucosa Bucal/lesões , Tomografia Computadorizada por Raios X , Fraturas dos Dentes/diagnóstico por imagem , Traumatismos Dentários/diagnóstico por imagem , Traumatismos Dentários/etiologia , Raiz Dentária/lesões , Adulto Jovem
18.
J Oral Maxillofac Surg ; 79(1): 177-182, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32956619

RESUMO

PURPOSE: Utilization of technology to aid in the assessment, planning, and management of complex craniomaxillofacial injuries is increasingly common. Limited data exist regarding the implication of intraoperative CT/3-Dimensional imaging on decision making in the management of zygomaticomaxillary complex (ZMC) fractures. This study characterizes the utilization of the intraoperative CT scanner for ZMC fracture surgery and analyzes the impact of the intraoperative CT scanner on fracture management. Using these findings, we sought to propose an algorithm to guide the appropriate utilization of intraoperative 3-Dimensional imaging in ZMC fracture surgery. METHODS: This retrospective case series evaluates the use of the intraoperative CT scanner for orbitozygomatic trauma surgery at a level 1 trauma center from February 2011 to September 2016. We evaluated the preoperative CT images assessing for the number of displaced sutures, the presence of adjacent fractures requiring fixation, the presence of comminution of the zygomaticomaxillary buttress or body of the zygoma, as well as the number of axes displaced ≥ 5 mm. This information was evaluated to provide guidance on the appropriate utilization of the intraoperative scanner in ZMC fracture management. RESULTS: A total of 71 patients were identified to have intraoperative facial CT scans and surgery for ZMC fractures over the study time period. There was a 23.9% (17/71) CT directed revision rate. There was a significantly increased likelihood of CT directed revision for fractures with adjacent fractures requiring fixation, and those with ≥ 2 axes displaced ≥ 5 mm. Using these findings, we proposed the ZYGOMAS algorithm outlining the indications for use of intraoperative CT in management of ZMC fractures. CONCLUSIONS: If available, intraoperative CT/3-Dimensional imaging should be utilized in the management of ZMC fractures with the requirement for orbital floor reconstruction, where adjacent fractures require fixation and/or when ≥ 2 axes are displaced ≥ 5 mm.


Assuntos
Fraturas Maxilares , Fraturas Orbitárias , Fraturas Zigomáticas , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Fraturas Orbitárias/diagnóstico por imagem , Fraturas Orbitárias/cirurgia , Estudos Retrospectivos , Zigoma/diagnóstico por imagem , Zigoma/cirurgia , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
19.
Neuroradiol J ; 34(2): 135-139, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33283650

RESUMO

Hypopharyngeal perforation (HP) is a potentially life-threatening condition most associated with iatrogenic injury and foreign body impaction. Additionally, a number of cases of posterior HP have been reported following blunt cervical trauma. We present a case of a construction accident causing lateral hypopharyngeal rupture. Visceral perforation was initially diagnosed on computed tomography (CT) imaging and managed conservatively. We speculate this region may be particularly vulnerable to injury due to an anatomic transition in adjacent fascial support. A review of 29 prior cases suggests that this may be the first reported case of blunt trauma causing rupture of the pyriform sinus. However, significant heterogeneity exists in diagnostic approach. Radiography and CT are rapid, sensitive modalities for suggesting pharyngeal perforation, while fluoroscopy and endoscopy can better assess injury size and location and monitor resolution. Early radiologic recognition of hypopharyngeal injury is essential to initiate appropriate treatment. In certain cases, including our own, both the presence and specific location of perforation may be identified on initial CT images.


Assuntos
Traumatismos Craniocerebrais/complicações , Fraturas Maxilares/diagnóstico por imagem , Seio Piriforme/diagnóstico por imagem , Seio Piriforme/lesões , Tomografia Computadorizada por Raios X/métodos , Ferimentos não Penetrantes/complicações , Meios de Contraste , Corpos Estranhos/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Ruptura , Cartilagem Tireóidea/lesões
20.
Oral Maxillofac Surg ; 25(1): 41-48, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32712793

RESUMO

PURPOSE: Zygomatic bone has a higher risk of sustaining injuries in the maxillofacial skeleton. On fracturing, zygomatic bone separates from the four neighbouring bones at its articulations. Treatment for zygomaticomaxillary fractures has evolved a long way since 3000 BC. With the advent of miniplates for midface fracture, controversies still exist regarding the stability of zygoma following 1, 2, and 3 points for fixation. The study aims to compare and determine the most effective technique for the reduction of zygomaticomaxillary fractures and the ability to retain the fractured zygoma in a stable position. Hence, a study was conducted in our institute to compare 2 and 3-point fixation of zygomaticomaxillary fractures taking into account the clinical and radiographic parameters. METHODS: Twenty-four patients were divided into 2 equal groups A and B, receiving 2- and 3-point fixation respectively. Fracture displacement and stability were assessed using coronal and axial CT scan tracings at preoperatively, immediate, and 5-week postoperatively. RESULTS: Group B showed a significant reduction in postoperative mean displacement at sphenozygomatic and infraorbital region when compared with group A. Patients in group A had an increase incidence in vertical dystopia and enophthalmos. There was no postoperative displacement at any site in both the groups. CONCLUSION: The fractured segment was held in place by both the fixation methods but 3-point fixation gave better stability in maintaining the fractured segment in desired reduced position.


Assuntos
Fraturas Maxilares , Fraturas Zigomáticas , Fixação de Fratura , Fixação Interna de Fraturas , Humanos , Fraturas Maxilares/diagnóstico por imagem , Fraturas Maxilares/cirurgia , Estudos Prospectivos , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia
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