RESUMEN
Nasal fractures are the most common facial bone fractures, and soft tissue injuries are frequently accompanied. This study intends to make a deep analysis on the relationship between the 2.Patients diagnosed with nasal fracture between 2015 and 2017 were included. Patients younger than 17 years and those with previous facial fractures or aesthetic surgeries were excluded. Nasal fractures were classified according to the Stranc-Robertson (S-R) classification, and the severity of soft tissue injury was evaluated by length and depth. The authors compared the frequency of soft tissue injury between frontal and lateral groups. Second, the authors investigated whether the incidence of soft tissue injuries increases as a function of the increase in the S-R classification both in frontal and lateral group (from plane I to III). The authors also analyzed the difference in severity of soft tissue injuries in each group. Pearson chi-square analysis, linear by linear and Jonckheere-Terpstra tests were used for statistical analysis.Of 621 patients, 296 were frontal plane and 325 were lateral plane. The frontal group had a higher incidence of soft tissue injury than the lateral group (Pâ=â0.004). The incidence of soft tissue injury and severity by depth increased as a function of the increase in the S-R classification only in the frontal group (Pâ=â0.046, 0.019).In nasal fractures, frontal impact is more associated with frequency and severity of soft tissue injury than lateral impact. This seems to be related to the anatomical characteristics of nasal area and mechanism of injuries in each group.
Asunto(s)
Hueso Nasal/lesiones , Fracturas Craneales/clasificación , Fracturas Craneales/complicaciones , Traumatismos de los Tejidos Blandos/complicaciones , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Índices de Gravedad del Trauma , Adulto JovenRESUMEN
Due to their anatomical location, occipital condylar fractures (OCFs) are usually not observed during traditional autopsies and are therefore considered a rare injury. The aim of this study was to determine the true frequency of OCFs using post-mortem computed tomography (PMCT) in traumatic casualties. We retrospectively analyzed 438 PMCT studies of victims of traffic accidents, falls from height, violence, and low-energy head injuries (324 males and 114 females). OCFs were present in 22.6% of cases (n = 99), mostly in victims of railway accidents (48.5%, n = 17), falls from height (26.6%, n = 29), cyclists (24%, n = 6), and pedestrians hit by cars (22.5%, n = 29). Isolated OCFs were found in 5.5% of cases (n = 24), most often in cyclists (12%, n = 3) and pedestrians (9.3%, n = 12) hit by cars. There were no OCFs in the cases of fatalities caused by violence or accidental low-energy head injury. PMCT scans revealed that OCFs are common in high-energy injury fatalities and can be useful for determining the mechanism of trauma more precisely.
Asunto(s)
Hueso Occipital/diagnóstico por imagen , Hueso Occipital/lesiones , Fracturas Craneales/diagnóstico por imagen , Fracturas Craneales/epidemiología , Accidentes por Caídas/estadística & datos numéricos , Accidentes de Tránsito/estadística & datos numéricos , Adolescente , Adulto , Distribución por Edad , Anciano , Anciano de 80 o más Años , Ciclismo/estadística & datos numéricos , Traumatismos Craneocerebrales/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Peatones/estadística & datos numéricos , Abuso Físico/estadística & datos numéricos , Polonia/epidemiología , Estudios Retrospectivos , Distribución por Sexo , Fracturas Craneales/clasificación , Tomografía Computarizada por Rayos X , Adulto JovenRESUMEN
This study investigated the use of endonasal infiltrative anesthesia for the management of pain associated with nasal bone fracture reduction. Fifty-two patients with nasal bone fractures were distributed in 2 groups. In the first group, topical endonasal anesthesia and external transcutaneous infiltrative anesthesia were employed. In the second group, endonasal infiltrative anesthesia was also added. Visual analog scale pain scores related to the different steps of the procedure were registered. The addition of endonasal infiltrative anesthesia was associated with a significant decrease (p < .05) in pain during reduction maneuvers (6.71 vs. 4.83) and nasal packing (5.18 vs. 3.46). Addition of endonasal infiltrative anesthesia is an effective method of pain reduction during nasal bone fracture treatment.
Asunto(s)
Anestesia Local/métodos , Anestésicos Locales/administración & dosificación , Hueso Nasal/lesiones , Dolor Asociado a Procedimientos Médicos/tratamiento farmacológico , Fracturas Craneales/cirugía , Administración Intranasal/métodos , Reducción Cerrada/métodos , Femenino , Humanos , Inyecciones , Masculino , Hueso Nasal/cirugía , Distribución Aleatoria , Fracturas Craneales/clasificación , Escala Visual AnalógicaRESUMEN
The advent of titanium hardware, which provides firm three-dimensional positional control, and the exquisite bone detail afforded by multidetector computed tomography (CT) have spurred the evolution of subunit-specific midfacial fracture management principles. The structural, diagnostic, and therapeutic complexity of the individual midfacial subunits, including the nose, the naso-orbito-ethmoidal region, the internal orbits, the zygomaticomaxillary complex, and the maxillary occlusion-bearing segment, are not adequately reflected in the Le Fort classification system, which provides only a general framework and has become less relevant in contemporary practice. The purpose of this article is to facilitate the involvement of radiologists in the delivery of individualized multidisciplinary care to adults who have sustained blunt trauma and have midfacial fractures by providing a clinically relevant review of the role of multidetector CT in the management of each midfacial subunit. Surgically relevant anatomic structures, search patterns, critical CT findings and their management implications, contemporary classification systems, and common posttraumatic and postoperative complications are emphasized. ©RSNA, 2018.
Asunto(s)
Traumatismos Faciales/diagnóstico por imagen , Tomografía Computarizada Multidetector/métodos , Fracturas Craneales/diagnóstico por imagen , Traumatismos Faciales/clasificación , Traumatismos Faciales/cirugía , Humanos , Imagenología Tridimensional , Complicaciones Posoperatorias/diagnóstico por imagen , Fracturas Craneales/clasificación , Fracturas Craneales/cirugíaRESUMEN
PURPOSE: The frontal sinus shows a wide range of morphologic variations. The aim of this study was to evaluate the influence of frontal sinus size on fracture characteristics in frontal bone trauma. MATERIALS AND METHODS: In this cross-sectional study, data from patients with traumatic fractures of the frontal bone were retrospectively collected from the institution's database. Radiometric analysis of computed tomography and cone-beam computed tomography datasets was performed. Frontal sinus size was measured as variables of height, width, and depth. The secondary predictor was morphologic sinus type according to Guerram's classification: hyperplasia, medium size, hypoplasia, or aplasia of the frontal sinus. To determine outcomes, we classified fractures into the following categories: fracture isolated to the anterior table, combined fractures of the anterior and posterior tables, fracture isolated to the posterior table, and frontal bone fracture without sinus involvement. Further study variables were patients' demographic characteristics, combined midfacial fractures, orbital rim involvement, fracture displacement, and surgical approach. For statistical analysis, fracture types were assessed for frontal sinus metric size and morphologic type using bivariate tests with P < .05 defined as significant. RESULTS: We enrolled 53 consecutive patients with a mean age of 35 years; male patients comprised 91%. Fracture types differed significantly in sinus width and height (both P < .001), as well as depth (P = .002). Frontal sinus morphology was hyperplastic in 66%, medium in 30.2%, and hypoplastic in 3.8%. Patients with a hyperplastic frontal sinus had an increased likelihood of isolated anterior table fractures (odds ratio, 6.0; P = .007) compared with medium-sized types. Fractures without sinus involvement were more likely in hypoplastic and medium types (P < .001). CONCLUSIONS: The morphology of the frontal sinus determines the probability of fracture types from craniofacial trauma. Thus the frontal sinus size appears to be a major factor for frontal bone resistance to traumatic force impingement.
Asunto(s)
Seno Frontal/anatomía & histología , Seno Frontal/lesiones , Fracturas Craneales/clasificación , Adulto , Variación Anatómica , Tomografía Computarizada de Haz Cónico , Estudios Transversales , Femenino , Humanos , Masculino , Estudios Retrospectivos , Fracturas Craneales/diagnóstico por imagen , Tomografía Computarizada por Rayos XRESUMEN
Since the nose is at the center of the face, small changes to it can cause a big overall change. Therefore, a nasal fracture needs to be operated on when deformity is expected. Although many taxonomies have been developed for nasal bone fractures, no study has aimed to predict individual patient satisfaction. Herein, the authors tried to determine any correlation between the existing classifications of nasal bone fractures and subjective patient satisfaction. A retrospective study and telephone survey were conducted in 149 patients who underwent closed reduction for a pure nasal bone fracture. Pretraumatic, prereduction, and postoperative patient satisfactions were measured on a numerical scale from 1 to 5. The difference between pretraumatic and prereduction satisfactions was calculated to confirm the change in short-term satisfaction after trauma. The difference between pretraumatic and preoperative satisfactions was measured to determine change in long-term satisfaction postoperatively. The Stranc Robertson classification, modified Murray classification, and the presence of septal fracture were used to classify fractures. Independent and Jonckheere-Terpstra t tests were used in statistical analysis. Only 86 of 149 were included in the study. There was no significant difference in patient satisfaction among frontal/lateral (Pâ=â0.70, 0.56), frontal I/II (Pâ=â1.00, 0.24), and lateral I/II groups (Pâ=â0.57, 0.67) according to the Stranc Robertson classification. Septal fracture (Pâ=â0.21, 0.44) and the modified Murray classification (Pâ=â0.14, 0.47) also had no effect on satisfaction. Existing classification systems have the advantage of reflecting and distinguishing the characteristics of fractures, but there is a limit in their ability to reflect subjective patient satisfaction.
Asunto(s)
Fijación de Fractura/métodos , Hueso Nasal/diagnóstico por imagen , Satisfacción del Paciente , Fracturas Craneales/clasificación , Adulto , Femenino , Estudios de Seguimiento , Humanos , Masculino , Hueso Nasal/lesiones , Hueso Nasal/cirugía , Periodo Posoperatorio , Estudios Retrospectivos , Rinoplastia/métodos , Fracturas Craneales/diagnóstico , Fracturas Craneales/cirugía , Encuestas y Cuestionarios , Tomografía Computarizada por Rayos X , Resultado del TratamientoRESUMEN
BACKGROUND: The unique anatomy of the orbita and the different behavior of each malignant tumor cause us to perform the various types of orbital exenteration that yields to varying defect each of which has own specific demands in terms of the reconstruction. Current classification of orbital exenteration defects seems not to be adequate to provide detailed description. This study reviews 50 exenteration defects to offer a more effective anatomical classification system. METHODS: Over a 15 years period, 50 orbital exenteration defects in 47 patients were reconstructed. Defects were categorized according to the resected orbital wall, dura, and ethmoid resection. If the maxillectomy was performed, A or B was added to define the type of maxillectomy as partial (intact palate) or total maxillectomy, respectively. According to these criteria, 4 types of defect patterns were determined including Type 0 (nâ=â5) with intact orbital wall, Type I (nâ=â9) with sino-orbital fistula, Type II (nâ=â4) with crania-orbital fistula with intact dura, Type III (nâ=â6) with crania-orbital fistula associated with dura defect, and Type IV (nâ=â8) with cranio-nasal-orbital fistula. There were 12 partial (A) and 6 total maxillectomy (B) defects along with the orbital exenteration. RESULTS: There was no major complication except one. The minor wound-healing problems occurred in 7 patients. Nine patients (19%) used prosthesis. Twenty-two (46.8%) patients chose a patch to cover the area. The remaining 16 patients were not able to use any type of prosthesis because of the reconstruction methods. CONCLUSION: The authors believe that the authors' anatomical classification system provides more precise description of the defect which eventually enhances the success rate of both reconstruction and resection.
Asunto(s)
Órbita , Procedimientos de Cirugía Plástica/métodos , Fracturas Craneales , Humanos , Órbita/lesiones , Órbita/patología , Órbita/cirugía , Prótesis e Implantes , Estudios Retrospectivos , Fracturas Craneales/clasificación , Fracturas Craneales/cirugíaRESUMEN
OBJECTIVE: The aim of the study was to compare the traditional and newer temporal bone fracture classification systems and their reliability in predicting serious outcomes of hearing loss and facial nerve (FN) injury. METHODS: We queried the medical record database for hospital visits from 2002 to 2013 related to the search term temporal. A total of 1144 records were identified, and of these, 46 records with documented temporal bone fractures were reviewed for patient age, etiology and classification of the temporal bone fracture, FN examination, and hearing status. Of these records, radiology images were available for 38 patients and 40 fractures. RESULTS: Thirty-eight patients with accessible radiologic studies, aged 10 months to 16 years, were identified as having 40 temporal bone fractures for which the otolaryngology service was consulted. Twenty fractures (50.0%) were classified as longitudinal, 5 (12.5%) as transverse, and 15 (37.5%) as mixed. Using the otic capsule sparing (OCS)/violating nomenclature, 32 (80.0%) of fractures were classified as OCS, 2 (5.0%) otic capsule violating (OCV), and 6 (15.0%) could not be classified using this system. The otic capsule was involved in 1 (5%) of the longitudinal fractures, none of the transverse fractures, and 1 (6.7%) of the mixed fractures. Sensorineural hearing loss was found in only 2 fractures (5.0%) and conductive hearing loss (CHL) in 6 fractures (15.0%). Two fractures (5.0%) had ipsilateral facial palsy but no visualized fracture through the course of the FN canal. Neither the longitudinal/transverse/mixed nor OCS/OCV classifications were predictors of sensorineural hearing loss (SNHL), CHL, or FN involvement by Fisher exact statistical analysis (for SNHL: P = 0.37 vs 0.16; for CHL: P = 0.71 vs 0.33; for FN: P = 0.62 vs 0.94, respectively). CONCLUSIONS: In this large pediatric series, neither classification system of longitudinal/transverse/mixed nor OCS/OCV was predictive of SNHL, CHL, or FN palsy. A more robust database of audiologic results would be helpful in demonstrating this relationship.
Asunto(s)
Parálisis Facial/etiología , Pérdida Auditiva/etiología , Fracturas Craneales/clasificación , Hueso Temporal/lesiones , Adolescente , Niño , Preescolar , Bases de Datos Factuales , Femenino , Humanos , Lactante , Masculino , Reproducibilidad de los Resultados , Fracturas Craneales/complicacionesRESUMEN
In Germany, suicides by firearms are not very common in contrast to deaths by hanging and intoxications. The use of historical muzzle-loading firearms in the context of suicides is a rarity. Contact shots from muzzle loaders cause an unusual wound morphology with extensive soot soiling. We report the case of a 59-year-old man, who committed a planned complex suicide by shooting into his mouth with a replica percussion gun in combination with hanging. The gunshot injury showed strong explosive effects in the oral cavity with fractures of the facial bones and the skull associated with cerebral evisceration (so-called Krönlein shot). Due to the special constellation of the case with hanging immediately after the shot, external bleeding from the head injuries was only moderate. Therefore, the head injuries could be assessed and partially reconstructed already at the scene.
Asunto(s)
Asfixia/patología , Traumatismos por Explosión/patología , Armas de Fuego/clasificación , Traumatismos Penetrantes de la Cabeza/patología , Fracturas Craneales/patología , Suicidio/clasificación , Heridas por Arma de Fuego/patología , Causas de Muerte , Armas de Fuego/legislación & jurisprudencia , Traumatismos Penetrantes de la Cabeza/clasificación , Humanos , Masculino , Persona de Mediana Edad , Boca/lesiones , Boca/patología , Fracturas Craneales/clasificación , Hollín , Suicidio/legislación & jurisprudencia , Heridas por Arma de Fuego/clasificaciónRESUMEN
Alloplastic materials are often used when significant defects exist. Benefits include no donor site morbidity, relative ease of use, limitless supply, and predictable durability. Depending on the type of alloplast, limitations include a persistent risk of extrusion and infection. Of particular interest in relation to cranioplasties is the ability of the material to provide neuroprotection. The integrity and neuroprotective properties of autologous bone flaps, polymethylmethacrylate (PMMA), and high-density porous polyethylene (PP) were evaluated following impact testing. Three groups of New Zealand white rabbits (Nâ=â4) underwent a cranioplasty with either a bone flap, PMMA, or PP. In the control group (Nâ=â4), the animals had no cranioplasty. At the end of the eighth week, an impact was delivered to the center of each cranioplasty. At necropsy each cranium and brain was evaluated grossly and histologically. There was a statistical significant difference among groups for the severity of the hemorrhage (Pâ=â0.022) and the grade of cranioplasty disruption (Pâ=â0.0045). Autologous bone was found to be the weakest of the materials tested. In this group severe injury resulted at much lower energy levels than was observed in the control, PMMA, or PP groups. Both PMMA and PP were resistant to fracture and disruption. PMMA provided the greatest neuroprotection, followed by PP. Autologous bone provided the least protection with cranioplasty disruption and severe brain injury occurring in every patient. Brain injury patterns correlated with the degree of cranioplasty disruption regardless of the cranioplasty material. Regardless of the energy of impact, lack of dislodgement generally resulted in no obvious brain injury.
Asunto(s)
Autoinjertos/fisiología , Sustitutos de Huesos/uso terapéutico , Trasplante Óseo/métodos , Craneotomía/métodos , Procedimientos de Cirugía Plástica/métodos , Animales , Autoinjertos/trasplante , Materiales Biocompatibles/química , Fenómenos Biomecánicos , Hemorragia Encefálica Traumática/clasificación , Lesiones Encefálicas/clasificación , Fracturas Conminutas/clasificación , Masculino , Ensayo de Materiales , Proyectos Piloto , Polietileno/química , Polimetil Metacrilato/química , Porosidad , Conejos , Distribución Aleatoria , Fracturas Craneales/clasificación , Estrés Mecánico , Factores de TiempoRESUMEN
Nasal fractures are the most common of all facial skeletal injuries. Untreated, these fractures frequently lead to functional and aesthetic problems. Careful history and physical assessment are critical to determine the extent of injury and to determine proper management. Critical aspects of assessment are discussed, as is the role of imaging in management. The unique aspects of pediatric nasal fractures and their management are reviewed. Fractures are classified based on the degree of injury and the involvement of the septum. A simple treatment algorithm is provided to help guide the selection of optimal treatment techniques. A review of instrumentation and treatment techniques is provided. The goal of treatment is to restore the nose to its preinjury shape and function and to minimize the need for secondary septorhinoplasty.
Asunto(s)
Algoritmos , Hueso Nasal/lesiones , Tabique Nasal/lesiones , Rinoplastia/instrumentación , Fracturas Craneales/diagnóstico por imagen , Fracturas Craneales/terapia , Reducción Cerrada , Humanos , Hueso Nasal/diagnóstico por imagen , Hueso Nasal/cirugía , Tabique Nasal/diagnóstico por imagen , Tabique Nasal/cirugía , Examen Físico , Rinoplastia/métodos , Fracturas Craneales/clasificación , Tomografía Computarizada por Rayos XRESUMEN
Fractures of the midface and internal orbit occur isolated or in combination with other injuries. Frequently, the patients are first seen in emergency rooms responsible for the coordination of initial diagnostic procedures, followed by the transfer to specialties for further treatment. It is, therefore, important for all physicians treating facial trauma patients to understand the basic principles of injuries to the midface. Thus, this article aims to describe the anatomy and the current classification systems in use, the related clinical symptoms, and the essential diagnostic measures to obtain precise information about the injury pattern.
Asunto(s)
Traumatismos Maxilofaciales/diagnóstico , Órbita/lesiones , Fracturas Craneales/diagnóstico , Traumatismos del Nervio Craneal/diagnóstico , Lesiones Oculares/diagnóstico , Humanos , Traumatismos Maxilofaciales/clasificación , Traumatismos Maxilofaciales/diagnóstico por imagen , Boca/lesiones , Cavidad Nasal/lesiones , Órbita/diagnóstico por imagen , Fracturas Craneales/clasificación , Fracturas Craneales/diagnóstico por imagen , Evaluación de Síntomas , Tomografía Computarizada por Rayos XRESUMEN
OBJECTIVES: To assess the changing mid-face fracture patterns using a computed tomography scan. METHODOLOGY: Fifty patients with mid-face trauma requiring open reduction and fixation were studied using 1.6 mm axial, sagittal, coronal and 3D images. Images were evaluated clinically, intra-operatively and finally were compared with standard Le Fort lines. Results. The male population dominated the female at a ratio of 11.5:1. The majority of the mid-face fractures were seen in the age group of 21-30 years. Road traffic accident (78%) was the major etiological factor followed by work-related accidents (12%) and assaults (10%). The CT scan analysis included categorizing the patients into three groups: (1) Fracture patterns resembling Le Fort lines (24%); (2) Fracture patterns partially resembling Le Fort lines (56%); and (3) Fracture patterns that do not resemble Le Fort lines (20%). CONCLUSION: With the change in the velocity of wounding object, there is a change in the mid-face fracture patterns. The majority of the cases present as a variant of classical Le Fort fractures. Computed tomography is a valuable diagnostic tool in assessing the fractures of the mid-face. 2D images are more sensitive than 3D images. However, both the images are required in delivery of an optimal treatment plan.
Asunto(s)
Huesos Faciales/lesiones , Fracturas Craneales/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodos , Accidentes de Trabajo , Accidentes de Tránsito , Adulto , Anciano , Hueso Etmoides/lesiones , Femenino , Fracturas Conminutas/clasificación , Fracturas Conminutas/diagnóstico por imagen , Humanos , Imagenología Tridimensional/métodos , Masculino , Fracturas Maxilares/clasificación , Fracturas Maxilares/diagnóstico por imagen , Persona de Mediana Edad , Hueso Nasal/lesiones , Fracturas Orbitales/clasificación , Fracturas Orbitales/diagnóstico por imagen , Paladar Duro/lesiones , Factores Sexuales , Fracturas Craneales/clasificación , Violencia , Adulto Joven , Fracturas Cigomáticas/clasificación , Fracturas Cigomáticas/diagnóstico por imagenRESUMEN
PURPOSE: In our prospective nationwide surveillance study of traumatic optic neuropathy (TON) in the United Kingdom, the prevalence of orbital fractures was found to be 39% (47/121). The prevalence of skull fractures was 7.4% (9/121). This study aims to identify the association of craniofacial-orbital fractures with the severity of visual loss. METHODS: TON patients who sustained orbital fractures were identified prospectively by population-based active surveillance through the British Ophthalmic Surveillance Unit over a 2-year period. Available CT scans were classified by a head and neck radiologist according to the Arbeitsgemeinschaft für Osteosynthesefragen/Association for the Study of Internal Fixation (AO/ASIF) scheme: the face was divided into 4 units; fractures in each unit were graded according to displacement (A-C) and severity (1.1-3.3). Correlation between severity of craniofacial orbital fractures and visual acuity as well as number of fractured units and visual acuity were evaluated. RESULTS: Twelve of the 25 patients (48%) with imaging available had adequate high resolution craniofacial CT imaging for review and classification using the AO/ASIF system (i.e. 48 classifiable units). Three of 48 (6%) units were undisplaced (grade A), 18 of 48 (29%) units were minimally displaced (grade B), and 4 of 48 (8%) units had largely displaced (grade C) fractures. Twenty-three units (47.9%) had no fractures; 5 patients had radiological evidence of optic canal fractures. Poor visual acuities positively correlated with severity of fractures graded using the AO/ASIF classification (Spearman's rho = 0.95, p = 0.05) and number of fractured units (Spearman's rho = 1.0, p < 0.0001). CONCLUSION: AO/ASIF classification system provides a uniform method in the assessment of orbital fractures which correlates with visual outcome in TON.
Asunto(s)
Huesos Faciales/lesiones , Órbita/lesiones , Fracturas Orbitales/clasificación , Fracturas Craneales/clasificación , Adolescente , Adulto , Fijación Interna de Fracturas , Humanos , Fracturas Orbitales/diagnóstico por imagen , Fracturas Orbitales/cirugía , Vigilancia de la Población , Estudios Prospectivos , Fracturas Craneales/diagnóstico por imagen , Fracturas Craneales/cirugía , Encuestas y Cuestionarios , Tomografía Computarizada por Rayos X , Reino Unido , Agudeza Visual/fisiología , Adulto JovenRESUMEN
The first description in the forensic medical literature of a demarcation line for the localization of head injuries resulting from falling to the ground appears in Kratter (1919). Regarding a similar line, Walcher (1931) later introduced the relation to the hat brim (Hutkrempe), which gave the rule its name: the hat brim line rule (Hutkrempenregel). Thenceforth it was supposed to be called Kratter's and Walcher's hat brim line rule (Kratter-Walcher'sche Hutkrempenregel). Over the following decades, not only its content but also the area of application and the definition of the hat brim line rule were repeatedly, and in part significantly, altered. This could be one of the reasons for the confusing diversity of academic opinions about the rule's applicability. Generally, the hat brim line rule should be retained in its original sense: Fall-related injuries do not lie above the hat brim line if the fall occurred from a standing position to the ground, without intermediary blows to the head. If applied in this way, the rule can be a helpful point of orientation for experts. The demarcation line in the original anatomical definition according to Kratter (1919) should also be used henceforth: the line which connects "the frontal eminence, the parietal eminence and the tip of the occipital plate" and lies "somewhat.above the usual saw-line of the calvarium". This line corresponds roughly to the hat brim line as it is understood by hat makers. The hat brim line rule should not be applied with regard to small children, as they show a different falling behaviour due to their disproportionately large and heavy heads. The rule is also in no way applicable to the assessment of injuries from blows, falls from a height (including from stairs) or traffic accidents. There is an urgent need for research as to the applicability of the hat brim line rule in relation to falling backwards, particularly in cases of high alcohol consumption.
Asunto(s)
Accidentes por Caídas , Algoritmos , Puntos Anatómicos de Referencia/patología , Patologia Forense/métodos , Traumatismos Cerrados de la Cabeza/clasificación , Fracturas Craneales/patología , Diagnóstico Diferencial , Traumatismos Cerrados de la Cabeza/patología , Humanos , Postura , Fracturas Craneales/clasificaciónRESUMEN
OBJECTIVE: To analyze the rates of complications after pediatric temporal bone fractures (TBF) and the utility of the longitudinal, transverse, and mixed versus the otic capsule sparing (OCS) and otic capsule violating (OCV) classification systems in predicting these complications. DATA SOURCES: PubMed, Scopus, and CINAHL. REVIEW METHODS: Per PRISMA guidelines, studies of children with TBFs were included. Meta-analyses of proportions were performed. RESULTS: A total of 22 studies with 1376 TBFs were included. Children with TBF had higher rates of conductive hearing loss (CHL) than sensorineural hearing loss (SNHL) (31.3% [95% confidence interval [CI] 23.2-40.1] vs 12.9% [95% CI 8.9-17.5]). No differences in both CHL and SNHL were seen between longitudinal and transverse TBFs; however, OCV TBFs had higher rates of SNHL than OCS TBFs (59.3% [95% CI 27.8-87.0] vs 4.9% [95% CI 1.5-10.1]). Of all patients, 9.9% [95% CI 7.2-13.1] experienced facial nerve (FN) paresis/paralysis, and 13.4% [95% CI 5.9-23.2] experienced cerebrospinal fluid otorrhea. Transverse TBFs had higher rates of FN paresis/paralysis than longitudinal (27.7% [95% CI 17.4-40.0] vs 8.6% [95% CI 5.2-12.8]), but rates were similar between OCS and OCV TBFs. CONCLUSION: CHL was the most common complication after TBF in children; however, neither classification system was superior in identifying CHL. The traditional system was more effective at identifying FN injuries, and the new system was more robust at identifying SNHL. While these results suggest that both classification systems might have utility in evaluating pediatric TBFs, these analyses were limited by sample size. Future research on outcomes of pediatric TBFs stratified by type of fracture, mainly focusing on long-term outcomes, is needed.
Asunto(s)
Hueso Temporal , Humanos , Hueso Temporal/lesiones , Niño , Fracturas Craneales/complicaciones , Fracturas Craneales/clasificación , Pérdida Auditiva Sensorineural/etiología , Pérdida Auditiva Sensorineural/epidemiología , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/clasificación , Pérdida Auditiva Conductiva/etiologíaRESUMEN
PURPOSE: To investigate whether complex midface fractures have a greater association with death and intracranial injury than simple midface fractures. MATERIALS AND METHODS: A retrospective chart review was performed for patients with blunt-mechanism midface fractures who had presented to an urban trauma center from 1998 to 2010. The survival and intracranial injury status was evaluated for patients with simple and complex midface fractures, including Le Fort, naso-orbitoethmoid, and/or zygomaticomaxillary fractures. Intracranial injury included hemorrhage and brainstem injury. Patients with upper face fractures were excluded to minimize confounding. Adjusted relative risk estimates were obtained using multivariate regression analysis. RESULTS: Of 3,291 patients with midface fractures, 213 (6.3%) died and 693 (21.3%) had an intracranial injury. The cumulative mortality reached 11.6% in patients with complex midface fractures and 5.1% in those with simple midface fractures (P < .001). Patients with complex midface fractures were 57% more likely to die (relative risk = 1.57; P < .005). Specifically, Le Fort II fractures independently conferred a 94% increased risk of death (relative risk = 1.94; P < .01), but Le Fort I and III fractures were not significantly associated with death. Among patients presenting without neurologic impairment, those with Le Fort II and III fractures remained 2.88-fold (P < .01) and 2.54-fold (P < .001) more likely to have an underlying intracranial injury, respectively. CONCLUSIONS: Le Fort II fractures are associated with increased mortality. Furthermore, Le Fort II and III fractures are associated with serious intracranial injury, even in the absence of alterations in consciousness. These patients should be monitored with heightened vigilance and followed up closely during hospitalization, regardless of the presenting clinical findings.
Asunto(s)
Huesos Faciales/lesiones , Fracturas Maxilares/mortalidad , Fracturas Craneales/mortalidad , Accidentes por Caídas/estadística & datos numéricos , Accidentes de Tránsito/estadística & datos numéricos , Adolescente , Adulto , Baltimore/epidemiología , Lesiones Encefálicas/mortalidad , Tronco Encefálico/lesiones , Hemorragia Cerebral/mortalidad , Estudios de Cohortes , Hueso Etmoides/lesiones , Femenino , Estudios de Seguimiento , Escala de Coma de Glasgow , Humanos , Puntaje de Gravedad del Traumatismo , Masculino , Fracturas Maxilares/clasificación , Persona de Mediana Edad , Hueso Nasal/lesiones , Fracturas Orbitales/mortalidad , Estudios Retrospectivos , Fracturas Craneales/clasificación , Tasa de Supervivencia , Violencia/estadística & datos numéricos , Heridas no Penetrantes/mortalidad , Adulto Joven , Fracturas Cigomáticas/mortalidadRESUMEN
INTRODUCTION: This study aimed to use video analysis techniques to determine the velocity, impact force, angle of impact, and impulse to fracture involved in a video-recorded bicycle accident resulting in facial fractures. Computed tomographic images of the resulting facial injury are presented for correlation with data and calculations. To our knowledge, such an analysis of an actual recorded trauma has not been reported in the literature. MATERIALS AND METHODS: A video recording of the accident was split into frames and analyzed using an image editing program. Measurements of velocity and angle of impact were obtained from this analysis, and the force of impact and impulse were calculated using the inverse dynamic method with connected rigid body segments. These results were then correlated with the actual fracture pattern found on computed tomographic imaging of the subject's face. RESULTS: There was an impact velocity of 6.25 m/s, impact angles of 14 and 6.3 degrees of neck extension and axial rotation, respectively, an impact force of 1910.4 N, and an impulse to fracture of 47.8 Ns. These physical parameters resulted in clinically significant bilateral mid-facial Le Fort II and III pattern fractures. DISCUSSION: These data confer further understanding of the biomechanics of bicycle-related accidents by correlating an actual clinical outcome with the kinematic and dynamic parameters involved in the accident itself and yielding a concrete evidence of the velocity, force, and impulse necessary to cause clinically significant facial trauma. These findings can aid in the design of protective equipment for bicycle riders to help avoid this type of injury.
Asunto(s)
Traumatismos en Atletas/fisiopatología , Ciclismo/lesiones , Fenómenos Biomecánicos , Huesos Faciales/lesiones , Fracturas Craneales/fisiopatología , Grabación en Video , Aceleración , Traumatismos en Atletas/cirugía , Huesos Faciales/fisiopatología , Huesos Faciales/cirugía , Humanos , Imagenología Tridimensional , Fracturas Craneales/clasificación , Fracturas Craneales/cirugía , Tomografía Computarizada por Rayos XRESUMEN
PURPOSE: The aim of this article was to assess how regional facial fracture patterns predict mortality and occult intracranial injury after blunt trauma. METHODS: Retrospective chart review was performed for blunt-mechanism craniofacial fracture patients who presented to an urban trauma center from 1998 to 2010. Fractures were confirmed by author review of computed tomographic imaging and then grouped into 1 of 5 patterns of regional involvement representing all possible permutations of facial-third injury. Mortality and the presence of occult intracranial injury, defined as those occurring in patients at low risk at presentation for head injury by Canadian CT Head Rule criteria, were evaluated. Relative risk estimates were obtained using multivariable regression. RESULTS: Of 4540 patients identified, 338 (7.4%) died, and 171 (8.1%) had intracranial injury despite normal Glasgow Coma Scale at presentation. Cumulative mortality reached 18.8% for isolated upper face fractures, compared with 6.9% and 4.0% for middle and lower face fractures (P < 0.001), respectively. Upper face fractures were independently associated with 4.06-, 3.46-, and 3.59-fold increased risk of death for the following fracture patterns: isolated upper, combined upper, panfacial, respectively (P < 0.001). Patients who were at low risk for head injury remained 4 to 6 times more likely to suffer an occult intracranial injury if they had involvement of the upper face. CONCLUSIONS: The association between facial fractures, intracranial injury, and death varies by regional involvement, with increasing insult in those with upper face fractures. Cognizance of the increased risk for intracranial injury in patients with upper face fractures may supplement existing triage tools and should increase suspicion for underlying or impending neuropathology, regardless of clinical picture at presentation.
Asunto(s)
Traumatismos Craneocerebrales/epidemiología , Huesos Faciales/lesiones , Fracturas Craneales/mortalidad , Heridas no Penetrantes/mortalidad , Accidentes de Tránsito/estadística & datos numéricos , Adolescente , Adulto , Negro o Afroamericano/estadística & datos numéricos , Anciano , Baltimore/epidemiología , Causas de Muerte , Estudios de Cohortes , Femenino , Escala de Coma de Glasgow , Mortalidad Hospitalaria , Humanos , Puntaje de Gravedad del Traumatismo , Hemorragia Intracraneal Traumática/epidemiología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Riesgo , Fracturas Craneales/clasificación , Tomografía Computarizada por Rayos X/métodos , Salud Urbana/estadística & datos numéricos , Población Blanca/estadística & datos numéricos , Heridas no Penetrantes/clasificación , Adulto JovenRESUMEN
Fractures of the medial and basal orbital wall as well as the petrous part of the temporal bone were described first in 1980 by a Berlin-based study group led by Geserick as new cranium findings resulting from a contrecoup mechanism. Experimental and comparative examinations revealed that indirect fractures of the orbital walls are caused by a coup action of the eyeballs, whereas the mechanogenesis of the petrous bone fractures continues to be unclear. The frequently combined occurrence with the orbital sign nonetheless permits an allocation to the contrecoup mechanism. Both signs are important criteria for forensic and clinical assessment of craniocerebral injuries.