Predictable Patterns of Intracranial and Cervical Spine Injury in Craniomaxillofacial Trauma: Analysis of 4786 Patients:

What Is the Relationship Between Maxillofacial Injury Location and Associated Injuries?

BACKGROUND

Patients sustaining maxillofacial fractures are at risk for associated injuries (AIs) to other body regions. The incidence of AIs is reported to be from 20 to 35%. AIs may be life-threatening and play a key role in considering first-line management at the emergency department, as well as planning the definitive treatment of maxillofacial fractures.

PURPOSE

The study aimed to determine the frequency and risk factors for AIs in patients with maxillofacial fractures.

STUDY DESIGN, SETTING, SAMPLE

The investigators designed and implemented a retrospective cohort study of patients with facial fractures treated at Central Hospital (Lahti, Finland) from January 1, 2009 through December 31, 2019. All adult patients with verified maxillofacial fractures were included. Patients under 18 years of age were excluded from the study.

PREDICTOR VARIABLE

The predictor variable was the location of the maxillofacial fractures grouped into three categories: mandible alone, midface alone, and both midface and mandible.

MAIN OUTCOME VARIABLE(S)

The primary outcome variable was associated body region injuries coded as present or absent. The secondary outcome variable was the location of the AI categorized as skull, neck, thorax, pelvis, or extremity injuries.

COVARIATES

Other study variables included demographic data (age, sex, alcohol use), Glasgow Coma Scale, and etiology (fall, traffic- and bicycle accident, assault, pedestrian hit by motor vehicle, work-related, or sports/free-time injuries).

ANALYSES

Continuous variables were analyzed for normal distribution using the Shapiro-Wilks test and compared with categorical variables using the Mann-Whitney test. The univariate analyses of categorical variables were analyzed by the χ2 test (P ≤ .05 was considered statistically significant).

RESULTS

During the study period, 443 adult (≥18) patients had maxillofacial fractures. AIs were present in 88 subjects (20%). The mean age was 47.6 years (range 18-91); 52 years with AIs (range 19-91), and 47 years (range 18-92) without AIs (P = .03). Subjects with midface and mandible + midface fractures had greater risk to AIs compared to mandibular fractures (relative risk 2.0, P = .002, relative risk 2.8, P = .009).

CONCLUSION AND RELEVANCE

Every fifth maxillofacial trauma patient had an associated injury. Trauma patients should be evaluated in institutions with trauma protocols and imaging modalities before determining and executing the treatment plan for maxillofacial fractures.

The incidence and patterns of maxillofacial fractures and associated head and neck injuries

The aim of this study was to evaluate the incidence and patterns of maxillofacial fractures and the demographic characteristics of associated head and neck injuries. This single-center retrospective cohort study was conducted at the Department of Oral and Maxillofacial Surgery of King Abdullah University Hospital (KAUH) in Irbid, northern Jordan. The data was obtained from the electronic clinical records of all patients in whom maxillofacial fractures and associated head and neck injuries were confirmed. During the five-year period captured by this retrospective study, 481 patients with 1026 maxillofacial fractures (equivalent to 2.13 fractures per patient) were treated. The sample comprised of 369 (76.7%) males and 112 (23.3%) females, resulting in a male/female ratio of 3.3:1. Majority of the patients were in the 21-30 age group and RTA was the most common cause of maxillofacial fractures, accounting for 299 (62.1%) of the analyzed cases. In 316 cases, maxillary fractures were accompanied by associated injuries, 132 (41.77%) of which were intracranial lesions, 80 (25.32%) were skull fractures, and 59 (18.67%) were cervical spine injuries. Based on the obtained data, it can be concluded that the high occurrence of RTA emphasizes the significance of adhering to traffic laws and regulations, as individuals who have suffered serious head and neck injuries as a result of maxillofacial trauma may experience potentially fatal consequences. Thus, management for patients with maxillofacial fractures and concomitant traumas should be multidisciplinary and coordinated.

Imaging of Maxillofacial Injuries

This article reviews the system of facial buttresses and discusses the role of diagnostic imaging in the evaluation of the patient with maxillofacial trauma.

Are severity and location of facial trauma risk factors for cervical spine injuries? 10-year analysis based on the use of the AO spine injury classification and the comprehensive facial injury (CFI) score

PURPOSE

This study aims to demonstrate a correlation between cervical spine injury and location and severity of facial trauma.

METHODS

We did a 10-year retrospective analysis of prospectively collected patients with at least one facial and/or cervical spine injury. We classified facial injuries using the Comprehensive Facial Injury (CFI) score, and stratified patients into mild (CFI < 4), moderate (4 ≤ CFI < 10) and severe facial trauma (CFI ≥ 10). The primary outcome was to recognize the severity and topography of the facial trauma which predict the probability of associated cervical spine injuries.

RESULTS

We included 1197 patients: 78% with facial injuries, 16% with spine injuries and 6% with both. According to the CFI score, 48% of patients sustained a mild facial trauma, 35% a moderate one and 17% a severe one. The midface was involved in 45% of cases, then the upper facial third (13%) and the lower one (10%). The multivariate analysis showed multiple independent risk factors for associated facial and cervical spine injuries, among them an injury of the middle facial third (OR 1.11 p 0.004) and the facial trauma severity, having every increasing point of CFI score a 6% increasing risk (OR 1.06 p 0.004).

CONCLUSIONS

Facial trauma is a risk factor for a concomitant cervical spine injury. Among multiple risk factors, severe midfacial trauma is an important red flag. The stratification of facial injuries based on the CFI score through CT-scan images could be a turning point in the management of patients at risk for cervical spine injuries before imaging is available.

Concomitant Cervical Spine Injuries in Pediatric Maxillofacial Trauma: An 11 Year Review of the National Trauma Data Bank

PURPOSE

Craniofacial trauma with concomitant cervical fractures (CCFs) is responsible for significant morbidity and mortality in the pediatric population. We aim to characterize its incidence, injury patterns, outcomes, and risk factors, along with identifying any association between mandible fractures and cervical injuries via the National Trauma Databank.

METHODS

A retrospective cohort study was performed using National Trauma Databank records between 2007 and 2017 to identify patients equal or under the age of 18 years hospitalized for maxillofacial trauma and with recorded cervical injury. Variables of interest include age, gender, race/ethnicity, trauma type (blunt vs penetrating), Injury Severity Score, area involved, mechanism of injury, comorbid conditions, inpatient complications, and discharge disposition. Retrospective cohorts were separated by CCF status. Univariate, bivariate, and multivariable regression analysis was utilized, with P-value <.05 considered statistically significant.

RESULTS

A total of 32,952 patients were included in the study, with the majority being White (60.8%), male (68.2%), and between the ages of 13 and 18 years (65%). Of these, 8.2% experienced CCF. Most common mechanisms of injury were motor vehicle trauma (32.6%), interpersonal violence (18.8%), and falls (13.5%). Univariate analysis revealed patients with CCF were significantly older (15.2 vs 12.9; P < .001), more likely to be motor vehicle occupants (46.6 vs 31.9%; P < .001), and suffer polyfacial fractures (62.6 vs 60.7%; P < .001). Longer length of stay (9.4 vs 3.6 days; P < .001) and significantly higher inpatient complications such as deep vein thrombosis, pulmonary embolism, unplanned intubation, severe sepsis, pressure ulcer, ventilator-associated pneumonia, and unplanned return to operating room were observed in the CCF cohort. Female gender (1.5 [1.37 to 1.64; 95% confidence interval {CI}] P < .001) and higher Injury Severity Score (1.12 [1.11 to 1.11; 95% CI] P < .001) were associated with significantly higher odds on multivariable analysis. The presence of a mandible fracture was not associated with increased CCF on multivariate analysis (1.06 [0.92 to 1.22; 95% CI] P = .36).

CONCLUSIONS

There are statistically significant differences in demographics, outcomes, and injury patterns in maxillofacial patients with CCF that may help guide treatment. No association between mandible fractures and cervical trauma was identified.

Intraoperative Positioning in Maxillofacial Trauma Patients With Cervical Spine Injury - Is It Safe? Radiological Simulation in a Healthy Volunteer

Study Design

Observational.

Objective

To investigate the effects on the cervical spine of positioning patients for maxillofacial procedures by simulating intraoperative positions for common maxillofacial procedures.

Methods

Magnetic resonance imaging was used to assess the effects of head position in common intraoperative configurations - neutral (anterior mandible position), extended (tracheostomy position) and laterally rotated (mandibular condyle position) on the C-spine of a healthy volunteer.

Results

In the tracheostomy position, maximal movement occurred in the sagittal plane between the cervico-occipital junction and C4-C5, as well as at the cervico-thoracic junction. Minimal movement occurred at C2 (on C3), C5 (on C6) and C6 (on C7). In the mandibular condyle position, C-spine movements occurred in both rotational and sagittal planes. Maximal movement occurred above the level of C4, concentrated at atlanto-occipital and atlanto-axial (C1-2) joints.

Conclusions

Neck extension is likely to be relatively safe in injuries that are stable in flexion and extension, such as odontoid peg fracture and fractures between C5 and C7. Head rotation is likely to be relatively safe in fractures below C4, as well as vertebral body fractures, and laminar fractures without disc disruption. Early dialogue with the neurosurgical team remains a central tenet of safe management of patients with combined maxillofacial and C-spine injuries.

Pattern of associated brain injury in maxillofacial trauma: a retrospective study from a high-volume centre

The incidence of head injury in maxillofacial trauma patients varies widely in the literature. A good understanding of the patterns of association between these injuries would aid in efficient multidisciplinary treatment. The aim of this study therefore was to understand the associations between head injury and facial trauma by retrospectively analysing the records of patients seen at a tertiary care trauma centre. Demographic data were also described. Records of 4350 facial trauma patients over a five-year period were reviewed. A total of 3564 (81.9%) patients were victims of motor vehicle accidents (MVA). Male patients predominated, comprising 3711 (85.3%), and 36.6% were in the third decade of life. Facial fractures were seen in 2120 (48.7%), the most common being zygomatic fractures (60%). At the time of trauma, 2383 (57.3%) patients were under the influence of alcohol, and 2821 (87.8%) victims of two-wheeler MVAs were not using their helmet. Of all patients, 29.75% sustained a traumatic brain injury (TBI). Midface fractures were strongly associated with TBI. Maxillofacial injury may be considered a risk factor for TBI, and as such should immediately be suspected and investigated in all patients. Prompt recognition and management can improve outcomes in these patients.

What are the Risk Factors for Mortality Among Patients Who Suffer Le Fort III Fractures?

PURPOSE

Le Fort III fractures are the most severe subtype of the Le Fort fractures and are associated with adverse clinical outcomes. The purpose of this study was to identify risk factors for mortality among patients who suffer Le Fort III fractures.

MATERIALS AND METHODS

A retrospective cohort study was completed using the 2016-2018 National Inpatient Sample. Patients with isolated Le Fort III fractures were selected. Patients who incurred bone fractures or organ injuries outside the head and neck were excluded. There were multiple, heterogenous predictor variables. The primary outcome variable was mortality. Relative risk was used to determine independent risk factors of mortality. Statistical significance was deemed for P values less than .05.

RESULTS

The final sample consisted of 559 patients (mean age, 45.9 years) who suffered a Le Fort III fracture, of whom 15 patients (2.68%) died. Most patients were male (82.7%) middle-aged adults (42.9%) of White race (66.5%) within the lowest income quartile (31.7%) that lived in large metro areas (54.9%). Relative to males, females were nearly 62 times more likely to die (P < .01). Relative to privately insured subjects, uninsured subjects were 23 times (P < .05) more likely to die. Relative to weekday admissions, weekend admissions increased the risk of mortality by 8 times (P < .05). Cranial vault fractures (odds ratio, 7.24; P < .05) and upper cervical fractures (odds ratio, 63.27; P < .05) were risk factors for mortality. Relative to males, females were at an increased risk for mortality (relative risk [RR] 7.14, 95% confidence interval [CI] 2.60, 19.61). Skull base fracture (RR 2.99, 95 CI 1.04, 8.63), cranial vault fracture (RR 3.04, 95 CI 1.07, 8.65), subdural hemorrhage (RR 2.98, 95 CI 1.10, 8.05), subarachnoid hemorrhage (RR 6.73, 95 CI 2.34, 19.35), and injury of blood vessels at neck level (RR 13.24, 95 CI 2.46, 71.16) were each risk factors for mortality.

CONCLUSIONS

Intracranial injury was not a risk factor for mortality. Instead, cranial vault fractures and skull base fractures increased the risk for mortality. In addition, uninsured patients and female patients were each at an increased risk for mortality.

“Trans-zygomatic approach” for reduction & internal fixation of a malunited, medially dislocated condyle fracture in a geriatric patient with cervical spine injury

The open reduction and internal fixation of medially displaced/dislocated condyle fracture is challenging due to inadequate visibility and access to the dislocated condyle. The common approach to reduction of such condyles is by inferior distraction of the mandible which facilitates visualization as well as instrumentation. However, this maneuver may be difficult, or contraindicated in patients with concomitant cervical spine injury where excessive manipulation of the mandible may predispose the spine to further trauma. Ramus osteotomies which are used when conventional reduction methods fail, facilitate reduction but are associated with additional incision, complications and surgical time. This case report presents an alternative method, the "trans-zygomatic approach" which was used effectively to reduce a dislocated and malunited condyle fracture in a geriatric patient with co-existent cervical spine injury. The approach facilitated precise reduction of condyle fracture with minimal impact on the cervical spine.

Assessment of the Wisconsin Criteria at a Level I Trauma Center

ABSTRACT

The Wisconsin Criteria was developed for physicians evaluating facial trauma to determine the likelihood of facial fractures. Subsequent studies have not consistently validated these criteria. This study seeks to validate the Wisconsin Criteria and determine its utility in predicting operative facial fractures.Retrospective chart review of the trauma database registry at a Level I Trauma Center was conducted from September 2011 to May 2019. Adult patients who had a complete facial examination by otolaryngology or plastic surgery as well as a head computed tomography scan completed, were included. Fisher exact test was utilized for statistical analysis (P < 0.05) and positive predictive value, and negative predictive value (NPV) were calculated with a 95% confidence interval.After screening, 546 patients met eligibility, 448 had at least 1 finding of the Wisconsin Criteria, and 472 patients had facial fractures. The sensitivity of the Wisconsin Criteria for determining the presence of a facial fracture was 86.23%, the specificity was 44.59%, and the NPV was 33.67% (P < .0001). Malocclusion was the criterion most specific in determining if a facial fracture was present (98.65%), and Glasgow Coma Score < 14 was the least specific (67.57%).The Wisconsin Criteria did aid in the identification of facial fractures in trauma patients with a comparable sensitivity, higher specificity, and much lower NPV than originally described. Further investigation should be done to validate the criteria in other large trauma centers.

Clinical risk factors associated with cerebrospinal fluid leak in facial trauma: A retrospective analysis

OBJECTIVE

Cerebrospinal fluid (CSF) leak occurs most commonly following skull fracture, with a CSF leakage complicating up to 2% of all head traumas. This study aims to identify demographic and injury characteristics correlated with the highest risk of CSF leak in patients with known facial fractures.

METHODS

Retrospective data was collected from a previously described trauma registry from 2010 to 2019. Patients over 18 years old with any type of facial fracture, known CSF leak status, available neuroimaging, and hospital admission were included. Chi-Square analysis for demographic and injury characteristic data were utilized.

RESULTS

A total of 79 patients with CSF leak and 4907 patients without CSF leak were included in the database. Patients with CSF leak tended to be younger than those without CSF leak (38.45 +/- 0.28 vs 44.08 +/- 0.28, M +/- SE, p = 0.0197). CSF leak depended on the mechanism of injury (MOI; X2 =27.02, df=2, p = 0.0000013), with CSF leak rates highest in penetrating injuries (4.87%) and motor vehicle accidents (1.78%) compared to blunt injuries (0.95%); age did not significantly differ between the MOI groups (p = 0.11). CSF leak was also more common in patients with a lower Glasgow coma scale (GCS; 7.95 +/- 0.58 vs 12.21 +/- 0.10, p = 10-15), LeFort type 2&3 and pan-facial fractures compared to all other facial fracture types (8.9% vs 1.2%, p = 10-15), and radiographic midline shift (29.4% vs 9.1%, p = 10-15). There was a trend towards a higher proportion of males in those with CSF leak compared to those without (83.3% vs 73.7% males, p = 0.073), and in patients with prolonged loss of consciousness (LOC; 9.43% with LOC > 1 h vs 2.69% LOC < 1 h, p = 0.056).

CONCLUSION

Facial fractures often present with CSF leak, and certain demographic and injury risk factors including younger age, worse GCS score, evidence of midline shift, and certain mechanisms of injury (penetrating and motor vehicle) are correlated with increased risk and warrant close screening and follow-up for CSF leak detection. LeFort type 2&3 and pan-facial fractures are at high risk of CSF leak.

Cerebrospinal fluid leak management in anterior basal skull fractures secondary to head trauma

OBJECTIVE

To summarize the presentation, diagnosis, and management of cerebrospinal fluid (CSF) leaks in the setting of traumatic anterior skull base fracture.

METHODS

Wide literature research has been performed as well as the authors' own clinical experience has been summarized.

RESULTS

Articles from the most recent 30 years have been reviewed and a typical case of our own has been presented. Based on the most updated evidence, a treatment algorithm for CSF leaks has been proposed.

CONCLUSION

Anterior skull base fracture accounts for about 4% of all head injuries and CSF leaks is a complication that commonly presents with clear fluid emanating from the nasal passage. A positive beta-2-transferrin study is highly specific for diagnosis, while thin-slice CT scanning and MRI cisternography are also useful tools. The majority of the CSF leaks tend to be resolved spontaneously, and conservative management is attempted first with or without the augmentation of a lumbar drain. Surgical management mainly includes open surgery and endoscopic surgery, which have their own pros and cons.

Successful Microsurgical Scalp Replantation Utilizing Loupe Magnification

Total scalp avulsion is a rare injury that poses a unique reconstructive challenge. Microsurgical replantation is considered the first-line choice; yet anastomotic efforts may be strained to find suitable recipient and target vessels. Concomitant injuries may also delay or hinder operative intervention. These complex scenarios are difficult to navigate and necessitate multidisciplinary input to optimize outcomes. As such, the authors present an illustrative case report of a total scalp avulsion injury that underwent successful microsurgical replantation. This report highlights the novel use of loupe magnification in scalp replantation and reviews technical and clinical nuances that facilitate a favorable reconstruction.

Cervical Spine Injuries and Maxillofacial Trauma: A Systematic Review

OBJECTIVES

Identify specific maxillofacial trauma patterns associated with cervical spine injuries.

METHODS

The protocol was developed according to (PRISMA-P) and was admitted to PROSPERO under accreditation code #CRD42020177816. Furthermore, the reporting of the present SR was conducted based on the PRISMA checklist.

RESULTS

Of the 1,407,750 patients recorded, a total of 115,997 patients (12.13%) had MFF with an associated CSI with a gender proportion (M:F) of 3.63:1 respectively. Motor vehicle accident was the most common cause of the combined Maxillofacial Trauma (MFT) and CSI. The most common CSI location was at the C2, followed by the C5 cervical spines. The most common location of a maxillofacial fracture resulting in a CSI was the mandible.

CONCLUSION

The incidence of the association of CSIs with MFT has been low (12.13%). Nevertheless, in cases of an isolated mandibular trauma due to a severe blow presenting with a low Glasgow Coma Scale, maxillofacial surgeons should be at a high alert of an associated CSI.

Fracture heat map of the facial skull demonstrates a danger zone of concomitant cervical spine injuries

Concomitant maxillofacial and cervical spine injuries occur in 0.8-12% of the cases. We examined the relation of injury localization and the probability of cervical spine fracture. A retrospective study was conducted on patients that have been treated at Dortmund General Hospital for injuries both to the maxillofacial region and to the cervical spine between January 1st, 2007 and December 31th, 2017. Descriptive statistical methods were used to describe the correlation of cervical spine injuries with gender, age as well as maxillofacial injury localization. 7708 patients were hospitalized with maxillofacial injury, among them 173 were identified with cervical spine injury. The average ages for both genders lie remarkably above the average of all maxillofacial trauma patients (36.2 y.o. in male and 50.9 y.o. in female). In the group of men, most injuries were found between the ages of 50 and 65. Whereas most injuries among women occurred after the age of 80. The relative ratio of cervical spine injuries (CSI) varies between 1.1 and 5.26% of the maxillofacial injuries (MFI), being highest in the soft tissue injury group, patients with forehead fractures (3.12%) and patients with panfacial fractures (2.52%). Further, nasal, Le Fort I and II, zygomatic complex and mandibular condyle fractures are often associated with CSI. Fractures next to the Frankfurt horizontal plane represent 87.7% of all MFI with concomitant CSI. Patients in critical age groups with a high-energy injury are more likely to suffer both, MFI and CSI injuries. Our findings help to avoid missing the diagnosis of cervical spine injury in maxillofacial trauma patients.

Management of Acute Soft Tissue Injuries of the Cheek and Principles of Scar Revision

Facial soft tissue injury is a challenging and complex problem for the facial plastic and reconstructive surgeon for cosmetic and functional reasons. This article will focus on the management of soft tissue injuries of the cheek, one of the most important presenting areas of the face. The cheek, like any other part of the face, is susceptible to several types of injury and any of these injuries have the potential to disfigure and debilitate. Knowledge of anatomical structures and wound healing principles is critical to devising an appropriate management plan and achieving superior patient outcomes in scar revision cases. Multiple techniques to improve long-term scarring from facial soft tissue injuries are available.

Patterns of pediatric cervical spine fractures in association with mandibular and facial fractures

OBJECTIVES

To determine the incidence, demographics, and outcomes of concurrent cervical spine (C-spine) fractures in pediatric facial trauma.

METHODS

The Kids' Inpatient Database (KID) from the 2016 Healthcare Cost Utilization Project (HCUP) was queried for various facial fractures using International Classification of Diseases Tenth Revision (ICD-10) diagnosis codes. Mandible fractures were further subdivided into fracture site. Patients aged 0-18 were included, and rates of C-spine fracture were analyzed with regards to demographic factors, length of stay, total charges, mortality rate, hospital characteristics, and concurrent facial fractures.

RESULTS

Of 5568 patients included, 4.18% presented with C-spine fracture. Children with C-spine fractures were significantly older (15.02 vs 12.76 years, p < 0.001) and length of stay was significantly longer (11.33 vs 6.44 days, p < 0.001). There was no difference in rate of C-spine fracture when stratified by gender, time of week/year, hospital location/type, or facial fracture other than subcondylar fractures. Subcondylar fractures were positively associated with C-spine fractures (OR 2.08, p = 0.002). C-spine fractures were associated with significantly higher mortality, length of stay, rate of tracheostomy, transfer out of index hospital, and total hospital charges.

CONCLUSIONS

A significant association exists between subcondylar mandible and C-spine fractures. Awareness of this information is vital for clinicians who manage pediatric facial trauma and alerts them to the need to rule out C-spine fractures in this group as these patients have significantly higher lengths of stay, total mean hospital costs, mortality and tracheostomy rates.

The association between traumatic dental and brain injuries in American children

BACKGROUND/AIM

It is crucial that dentists who treat traumatic dental injuries rule out concomitant brain injuries. Despite anatomic proximity, controversy exists regarding association between facial trauma and head injury. The aim of this study was to examine the association between dento-alveolar trauma (DAT) and traumatic brain injuries (TBI) using a national dataset of emergency department (ED) visits.

MATERIAL AND METHODS

Nationwide Emergency Department Sample (NEDS) data, one of the Healthcare Cost and Utilization Project (HCUP) datasets, were analyzed. Encounters of patients age 0-18 years with International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes associated with DAT and TBI in the 2010-2014 NEDS were identified. Data were analyzed using descriptive statistics, chi-square test, and logistic regression models to investigate the association between DAT and TBI and factors associated with TBI in DAT-positive patients.

RESULTS

During the study period, 6 281 658 ED visits were associated with traumatic injuries. DAT was recorded in 93 408 (1.5%) and TBI was recorded in 996 334 (15.9%) of these traumatic injury visits. Within the group of DAT-positive encounters, 7035 (7.5%) had codes associated with TBI. Of trauma encounters where a DAT was not involved (6 188 250 encounters), 989 299 (16%) had an associated TBI code. Patients with DAT had 0.20 odds of having TBI (95% CI, 0.19-0.20, P < .0001) compared with patients who did not have DAT when all other confounding variables were kept constant. Having multiple injuries, being involved in motor vehicle crashes, and injuries due to assault were associated with higher odds of concomitant TBI in patients who sustained DAT.

CONCLUSIONS

There was an inverse association between DAT and TBI in this study population.

Combined trauma in craniomaxillofacial and orthopedic-traumatological patients: the need for proper interdisciplinary care in trauma units

Aim

The primary aim of this study was to analyze frequency and characteristics of combined facial and peripheral trauma with consecutive hospitalization and treatment.

Materials and methods

The study included all patients with concomitant orthopedic-traumatolgical (OT) and craniomaxillofacial (CMF) injuries admitted to our level I trauma center in 2018. The data were collected by analysis of the institution’s database and radiological reviews and included age, sex, injury type, weekday and time of presentation. All patients were examined and treated by a team of surgeons specialized in OT and CMF directly after presentation.

Results

A total number of 1040 combined OT and CMF patients were identified. Mean age was 33.0 ± 26.2 years. 67.3% (n = 700) were male patients. Primary presentation happened most frequently on Sundays (n = 199) and between 7 and 8 pm (n = 74). 193 OT fractures were documented, where cervical spine injuries were most frequent (n = 30). 365 facial and skull fractures were recorded. 10.8% of the 204 patients with fractures of the viscerocranium presented with at least one fracture of the extremity, 7.8% (16/204) with cervical spine fractures, 33.3% (68/204) with signs of closed brain trauma and 9.8% (20/204) with intracranial hemorrhage.

Discussion

The study shows a high frequency of combined facial with OT-injuries and brain damage in a predominantly young and male cohort. Attendance by interdisciplinary teams of both CMF and OT surgeons specialized in cervical spine trauma surgery is highly advisable for adequate treatment.

Conclusion

Diagnostics and treatment should be performed by a highly specialized OT and CMF team, with a consulting neurosurgeon in a level-1 trauma center to avoid missed diagnoses and keep mortality low.

Management of Frontal Bone Fractures

BACKGROUND

The purpose of this study was to examine a level 1 trauma center's 12-year experience treating frontal sinus fractures with regards to patient demographics, management strategies, and treatment outcomes.

METHODS

An institutional review board-approved retrospective review of all facial fractures at a level 1 trauma center was performed for the years 2000 to 2012. Patient demographics, location of fractures, concomitant injuries, use of antibiotics, surgical management strategies and outcomes were collected for all frontal sinus fractures. A significance value of 5% was used.

RESULTS

There were 291 frontal sinus fractures treated at our institution. The mean age of patients was 34.4 years with a male predominance (90%). The most common mechanisms of injury were assault in 82 (28.2%) and motor vehicle accidents in 80 (27.5%). Anterior table fractures were seen in 261 patients (89.7%) and posterior table fractures were seen in 181 (62.2%). Treatment included ORIF with sinus preservation in 18 (6.2%), ORIF with sinus obliteration in 20 (6.9%), and cranialization in 18 (6.2%). Antibiotics were started on admission in 152 patients (52.2%). Fatality occurred in 9.3% of patients and complications included meningitis (1%), frontal sinusitis (1%), early wound infection (0.3%), and mucopyelocele (0.3%).

CONCLUSIONS

Frontal sinus fractures in our center are most often caused by interpersonal violence. Anterior table fractures were more common than posterior table fractures and ORIF with sinus obliteration was the most common surgical intervention. Most frontal sinus fractures at our institution (82%) were treated conservatively with no surgical intervention and we observed a low rate of long term complications.

Frequency of cervical spine injuries in patients with midface fractures

The aim of this retrospective cohort study was to determine the frequency and risk factors for cervical spine injury (CSI) in patients with midface fractures. Patients ≥18 years of age entered in the Massachusetts General Hospital Trauma Registry from 2007 to 2017 were identified. Those with a midface fracture, computed tomography and/or magnetic resonance imaging of the cervical spine, and complete medical records were included. There were 23,394 patients in the registry; 3950 (16.9%) had craniomaxillofacial fractures and 1822 (7.8%) had a CSI. Craniomaxillofacial fractures included fractures of the midface (n=2803, 71.0%), mandible (n=873, 22.1%), and midface plus mandible (n=274, 6.9%). The overall frequency of CSI in patients with midface fractures was 11.4% (350/3077). Patients with midface fractures had a higher risk for CSI compared to patients without a midface fracture (odds ratio 2.4, 95% confidence interval 2.1-2.4, P<0.001). In a multivariate model, nasal and orbital fractures, chest injuries, age, injury severity score, and motor vehicle crash or fall as the etiology were independent risk factors for CSI. Mortality was two times higher in subjects with CSI. Early and accurate diagnosis of CSI is a critical factor when planning the treatment of patients with these fractures.

The Characteristics and Cost of Le Fort Fractures: A Review of 519 Cases From a Nationwide Sample

PURPOSE

The aims were to report the characteristics of Le Fort fractures and to quantify the associated hospital costs.

MATERIALS AND METHODS

From October 2015 to December 2016, the National Inpatient Sample was searched for patients admitted with a primary diagnosis of a Le Fort fracture. Predictor variables were drawn from demographic, admission, and injury characteristics. The outcome variable was hospital cost. Summary statistics were calculated and compared among Le Fort patterns. Univariate comparisons and multivariate regression analyses were conducted to determine predictors associated with cost.

RESULTS

A total of 519 patients were identified in this cohort. Associated injuries included skull fractures (28%), intracranial hemorrhage (13%), cervical spine injury (9.8%), and concussion (9.1%). Seventy-three percent of patients received open reduction and internal fixation (ORIF) for their facial fractures during their admission, 13% received a tracheostomy, and 10% were mechanically ventilated for at least 1 day. The ventilation (P < .01) and tracheostomy (P < .01) rates increased with Le Fort complexity, as did length of stay (LOS; P < .01), costs (P < .01), and charges (P < .01). The mean costs of treating Le Fort I, II, and III fractures were $25,836, $28,415, and $47,333, respectively. Increased cost was independently associated with younger age, male gender, African-American ethnicity, Le Fort II and III patterns, motor vehicle accident etiology, mechanical ventilation requirement, tracheostomy, ORIF, transfer to an outside facility, and increased LOS.

CONCLUSIONS

The prevalence of head injuries and the need for respiratory support substantially increased with Le Fort complexity. Hospital costs were not markedly influenced by the diagnosis and management of associated injuries. Instead, costs were predominantly driven by fracture complexity and the need for necessary procedures, such as ORIF, tracheostomy, and mechanical ventilation.

Risk Factors for Cervical Spine Injury in Patients With Mandibular Fractures

PURPOSE

Patients with mandibular fractures are known to be at risk of concomitant cervical spine injuries (CSIs). The purpose of this study was to determine the incidence of and risk factors for CSIs in these patients.

PATIENTS AND METHODS

We conducted a retrospective cohort study of adult trauma patients with mandibular fractures from June 1, 2007, through June 30, 2017. Patients were identified through the Massachusetts General Hospital trauma registry and were included as study patients if they had a mandibular fracture and computed tomography or magnetic resonance imaging of the cervical spine. The primary predictor variable was the site of the mandibular fracture; the primary outcome variables were the presence of CSIs and death. The other variables were demographic characteristics (age, gender, alcohol use, and drug use), Injury Severity Score, Glasgow Coma Scale, presence of midface and extra-craniofacial injuries, and etiology. Data analysis consisted of univariate correlations and construction of a multivariate model to determine independent risk factors for CSIs.

RESULTS

Of 23,394 patients in the trauma registry, 3,950 (17%) had craniomaxillofacial fractures and 1,822 (7.7%) had CSIs. The frequency of CSIs in the overall cohort of mandibular fracture patients (n = 1,147) was 4.4%, and for admitted patients (n = 495), it was 10%. The mean age of patients with mandibular fractures plus CSIs was 40 years (range, 19 to 93 years); 84% were men. Patients with a ramus-condyle unit fracture, mandibular fracture plus any midface fracture, non-craniomaxillofacial injury, and motor vehicle crash etiology had the highest frequency of CSIs. Ramus-condyle unit fractures and chest injuries were independent risk factors for CSIs in the multivariate model (P = .0334 and P = .0013, respectively). The mortality rate was 4-fold higher in patients with CSIs versus those without CSIs.

CONCLUSIONS

The presence of ramus-condyle unit fractures and the presence of chest injuries were independent risk factors for CSIs. Oral and maxillofacial surgeons should be diligent in ruling out CSIs in mandibular fracture patients.

Is the Face an Air Bag for the Brain and Torso?—The Potential Protective Effects of Severe Midface Fractures

We investigated the patterns of injury associated with major midface trauma. Our hypothesis is that midface injuries are associated with a decrease in certain traumatic brain injuries as well as major torso injuries. The registry of our Level I trauma center was queried for all adult patients treated over 25 years from 1989 to 2013. Patients with midface fractures were identified based on the ICD-9 code. Associated injuries were defined based both on individual ICD-9 codes as well as the Barell Injury Matrix. Injury etiology was defined based on e-codes. Univariate analysis was performed using chi-squared test, Fisher's exact test, and Wilcoxon test. A total of 29,152 patients were identified. Excluding pediatric patients, those with exclusively penetrating trauma, and patients with incomplete data, 20,971 patients were included for subsequent analysis. Midface fractures were identified in 752 patients. Patients with Le Fort fractures were more likely to be male, have a higher Injury Severity Score, a lower arrival Glasgow Coma Scale, and more likely to require intensive care unit admission and mechanical ventilation, with a longer hospital length of stay. Patients with midface fractures had significantly fewer subdural hematomas, subarachnoid hemorrhages, spine fractures, and were less likely to have associated abdominal and pelvic injuries. Patients with midface fractures were more likely to require facial reconstruction procedures and craniotomy. Patients presenting with midface fractures after blunt trauma have a distinctly different pattern of injuries. One potential mechanism for this is a deceleration effect, where midface impact and resulting fractures dissipate some of the energy.

Management of High-energy Avulsive Ballistic Facial Injury: A Review of the Literature and Algorithmic Approach

Background:

High-energy avulsive ballistic facial injuries pose one of the most significant reconstructive challenges. We conducted a systematic review of the literature to evaluate management trends and outcomes for the treatment of devastating ballistic facial trauma. Furthermore, we describe the senior author’s early and definitive staged reconstructive approach to these challenging patients.

Methods:

A Medline search was conducted to include studies that described timing of treatment, interventions, complications, and/or aesthetic outcomes.

Results:

Initial query revealed 41 articles, of which 17 articles met inclusion criteria. A single comparative study revealed that early versus delayed management resulted in a decreased incidence of soft-tissue contracture, required fewer total procedures, and resulted in shorter hospitalizations (level 3 evidence). Seven of the 9 studies (78%) that advocated delayed reconstruction were from the Middle East, whereas 5 of the 6 studies (83%) advocating immediate or early definitive reconstruction were from the United States. No study compared debridement timing directly in a head-to-head fashion, nor described flap selection based on defect characteristics.

Conclusions:

Existing literature suggests that early and aggressive intervention improves outcomes following avulsive ballistic injuries. Further comparative studies are needed; however, although evidence is limited, the senior author presents a 3-stage reconstructive algorithm advocating early and definitive reconstruction with aesthetic free tissue transfer in an attempt to optimize reconstructive outcomes of these complex injuries.

Isolated C5 Vertebrae Dislocation with Trauma: An Extremely Rare Case of Isolated C5 Dislocation

BACKGROUND Total spondylolisthesis, or dislocation of 1 cervical vertebrae, is only caused by high-energy trauma and is usually fatal. Cervical spine fractures and dislocations often cause 3-column structural damage to the cervical spine, injury to the spinal cord, and precipitating alignment of the cervical vertebrae, as well as cervical instability, which are detrimental, show poor prognosis, and are associated with high rates of mortality rate and disability. CASE REPORT We report an extremely rare case of isolated C5 dislocation caused by falling out of a tree, with sudden tetraplegia. CONCLUSIONS Total spondylolisthesis or dislocation of 1 cervical vertebrae can be surgically treated with anterior approach because it is possible to completely remove the vertebra body, intervertebral disc, and bone fragments, to directly decompress the spinal cord with stabilization.

Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study

Anatomy of frontal sinuses varies individually, from differences in volume and shape to a rare case when the sinuses are absent. However, there are scarce data related to influence of these variations on impact generated fracture pattern. Therefore, the aim of this study was to analyse the influence of frontal sinus volume on the stress distribution and fracture pattern in the frontal region. The study included four representative Finite Element models of the skull. Reference model was built on the basis of computed tomography scans of a human head with normally developed frontal sinuses. By modifying the reference model, three additional models were generated: a model without sinuses, with hypoplasic, and with hyperplasic sinuses. A 7.7 kN force was applied perpendicularly to the forehead of each model, in order to simulate a frontal impact. The results demonstrated that the distribution of impact stress in frontal region depends on the frontal sinus volume. The anterior sinus wall showed the highest fragility in case with hyperplasic sinuses, whereas posterior wall/inner plate showed more fragility in cases with hypoplasic and undeveloped sinuses. Well-developed frontal sinuses might, through absorption of the impact energy by anterior wall, protect the posterior wall and intracranial contents.

Anterior cervical distraction and screw elevating-pulling reduction for traumatic cervical spine fractures and dislocations: A retrospective analysis of 86 cases

Treatment of cervical fracture and dislocation by improving the anterior cervical technique.Anterior cervical approach has been extensively used in treating cervical spine fractures and dislocations. However, when this approach is used in the treatment of locked facet joints, an unsatisfactory intraoperative reduction and prying reduction increases the risk of secondary spinal cord injury. Thus, herein, the cervical anterior approach was improved. With distractor and screw elevation therapy during surgery, the restoration rate is increased, and secondary injury to the spinal cord is avoided.To discuss the feasibility of the surgical method of treating traumatic cervical spine fractures and dislocations and the clinical application.This retrospective study included the duration of patients' hospitalization from January 2005 to June 2015. The potential risks of surgery (including death and other surgical complications) were explained clearly, and written consents were obtained from all patients before surgery.The study was conducted on 86 patients (54 males and 32 females, average age of 40.1 ± 5.6 years) with traumatic cervical spine fractures and dislocations, who underwent one-stage anterior approach treatment. The effective methods were evaluated by postoperative follow-up.The healing of the surgical incision was monitored in 86 patients. The follow-up duration was 18 to 36 (average 26.4 ± 7.1) months. The patients achieved bones grafted fusion and restored spine stability in 3 to 9 (average 6) months after the surgery. Statistically, significant improvement was observed by Frankel score, visual analog scale score, Japanese Orthopedic Association score, and correction rate of the cervical spine dislocation pre- and postoperative (P < .01).The modified anterior cervical approach is simple with a low risk but a good effect in reduction. In addition, it can reduce the risk of iatrogenic secondary spinal cord injury and maintain optimal cervical spine stability as observed during follow-ups. Therefore, it is suitable for clinical promotion and application.

Soft Tissue Management in Facial Trauma

The management of soft tissue injury after facial trauma poses unique challenges to the plastic surgeon, given the specialized nature of facial tissue and the aesthetic importance of the face. The general principles of trauma management and wound care are applied in all cases. The management of severe injuries to the face is discussed in relation to the location and the mechanism of injury. Facial transplants have arisen in the past decade for the management of catastrophic soft tissue defects, although high morbidity and mortality after these non-life-saving operations must be considered in patient selection.

Mandible Fractures

Mandible fractures account for a significant portion of maxillofacial injuries and the evaluation, diagnosis, and management of these fractures remain challenging despite improved imaging technology and fixation techniques. Understanding appropriate surgical management can prevent complications such as malocclusion, pain, and revision procedures. Depending on the type and location of the fractures, various open and closed surgical reduction techniques can be utilized. In this article, the authors review the diagnostic evaluation, treatment options, and common complications of mandible fractures. Special considerations are described for pediatric and atrophic mandibles.

C-spine injury and mandibular fractures: lifesaver broken in two spots

BACKGROUND

Trauma is a leading cause of injury and mortality and may involve mandibular fractures and cervical spine injuries. Manipulation of the spine during trauma protocols and operative treatment has the potential to cause serious spinal cord injuries. The purpose of this study was to identify risk factors associated with cervical spine injury (CSI) in patients with mandibular fractures.

METHODS

The National Trauma Databank (2007-2010) was used to identify patients with mandibular fractures.

RESULTS

A total of 59,028 patients were identified and separated into adult and pediatric cohorts. There were 50,711 adults (86%) and 8317 children (14%). There were statistically significant lower rates of associated CSI in pediatric patients than adults (3.5% versus 7.3%, P < 0.01). Predictors of associated CSI in mandible fractures for both adults and children were older age, lower Glasgow Coma Scale, thoracic injuries, firearm or motor vehicle accident mechanisms, and symphyseal fractures. In the pediatric cohort, body, ramus, and subcondylar fractures were significantly associated with CSI. In adults, female gender, and upper extremity, abdominopelvic, and head injuries were also significantly associated with CSI.

CONCLUSIONS

Multiple mandibular fractures were inversely correlated with CSI. One possibility is that energy dissipation in the mandible with multiple fractures is protective of the C-spine leading to fewer fractures. Children and adults had different associations in the pattern of mandible fractures concomitant with CSI. This has implications in management, imaging, and workup of trauma patients.

Characteristics of Cervical Spine Injury in Pediatric Patients With Facial Fractures

OVERVIEW

Cervical spine injury may present with pediatric patients having sustained fractures of the craniofacial skeleton. Management considerations of the cervical spine often take priority to the fractures of the facial skeleton. The goal of this study was to examine this subset of patients with a focus on initial presentation and need for intervention.

METHODS

A retrospective review from 2000 to 2012 of all facial fractures in patients ≤ 18 years at a level 1 trauma center was performed. Patient demographics, location of fractures, and the presence of a cervical spine injury were collected.

RESULTS

During this time period, 285 patients met inclusion criteria. Ten patients were found to have a cervical spine injury. Fractures of the zygoma and orbit were significantly associated with a cervical spine injury. Patients with a cervical spine injury had a Glasgow Coma Scale of 11.2 compared with 13.8 in those without (P < 0.05). C1 was injured in 4 patients, C2 in 2 patients, and C3 to C7 in 4 patients. A surgical airway was required in 1 patient, and 6 were intubated in the trauma bay. Fractures of the mandible were significantly associated with injury to C2. Le Fort fractures and palate fractures approached significance with injury to C1. Only 1 patient had neurologic impairment at presentation, manifested as upper extremity parasthesias, and underwent decompression and fusion in the operating room. Those patients admitted (90%) were all admitted for reasons other than management of the cervical spine injury. The majority of patients (70%) were treated with collar immobilization. One patient expired. No patients had a neurologic deficit at the time of discharge.

CONCLUSIONS

In this study only 1 cervical spine injury necessitated intervention, with an eventual full recovery. Cervical spine injuries presenting with fractures of the facial skeleton appear to be relatively benign in this series; however, care must be taken to identify all such injuries to avoid exacerbation during maneuvers commonly used for facial fracture treatment. Special caution should be used when examining patients with a depressed Glasgow Coma Scale or in those with upper midface fractures.

Maxillofacial trauma - Underestimation of cervical spine injury

Undiagnosed cervical spine injury can have devastating results. The aim of this study was to analyse patients with primary maxillofacial trauma and a concomitant cervical spine injury. It is hypothetised that cervical spine injury is predictable in maxillofacial surgery. A monocentric clinical study was conducted over a 10-year period to analyse patients with primary maxillofacial and associated cervical spine injuries. Demographic data, mechanism of injury, specific trauma and treatments provided were reviewed. Additionally a search of relevant international literature was conducted in PubMed by terms "maxillofacial" AND "cervical spine" AND "injury". Of 3956 patients, n = 3732 (94.3%) suffered from craniomaxillofacial injuries only, n = 174 (4.4%) from cervical spine injuries only, and n = 50 (1.3%) from both craniomaxillofacial and cervical spine injuries. In this study cohort the most prevalent craniofacial injuries were: n = 41 (44%) midfacial and n = 21 (22.6%) skull base fractures. Cervical spine injuries primarily affected the upper cervical spine column: n = 39 (58.2%) vs. n = 28 (41.8%). Only in 3 of 50 cases (6%), the cervical spine injury was diagnosed coincidentally, and the cervical spine column was under immobilised. The operative treatment rate for maxillofacial injuries was 36% (n = 18), and for cervical spine injuries 20% (n = 10). The overall mortality rate was 8% (n = 4). The literature search yielded only 12 papers (11 retrospective and monocentric cohort studies) and is discussed before our own results. In cases of apparently isolated maxillofacial trauma, maxillofacial surgeons should be aware of a low but serious risk of underestimating an unstable cervical spine injury.

Management of maxillofacial trauma in emergency: An update of challenges and controversies

Trauma management has evolved significantly in the past few decades thereby reducing mortality in the golden hour. However, challenges remain, and one such area is maxillofacial injuries in a polytrauma patient. Severe injuries to the maxillofacial region can complicate the early management of a trauma patient owing to the regions proximity to the brain, cervical spine, and airway. The usual techniques of airway breathing and circulation (ABC) management are often modified or supplemented with other methods in case of maxillofacial injuries. Such modifications have their own challenges and pitfalls in an already difficult situation.

Impact of Injury Mechanisms on Patterns and Management of Facial Fractures

Mechanisms causing facial fractures have evolved over time and may be predictive of the types of injuries sustained. The objective of this study is to examine the impact of mechanisms of injury on the type and management of facial fractures at our Level 1 Trauma Center. The authors performed an Institutional Review Board-approved review of our network's trauma registry from 2006 to 2010, documenting age, sex, mechanism, Injury Severity Score, Glasgow Coma Scale, facial fracture patterns (nasal, maxillary/malar, orbital, mandible), and reconstructions. Mechanism rates were compared using a Pearson χ2 test. The database identified 23,318 patients, including 1686 patients with facial fractures and a subset of 1505 patients sustaining 2094 fractures by motor vehicle collision (MVC), fall, or assault. Nasal fractures were the most common injuries sustained by all mechanisms. MVCs were most likely to cause nasal and malar/maxillary fractures (P < 0.01). Falls were the least likely and assaults the most likely to cause mandible fractures (P < 0.001), the most common injury leading to surgical intervention (P < 0.001). Although not statistically significant, fractures sustained in MVCs were the most likely overall to undergo surgical intervention. Age, number of fractures, and alcohol level were statistically significant variables associated with operative management. Age and number of fractures sustained were associated with operative intervention. Although there is a statistically significant correlation between mechanism of injury and type of facial fracture sustained, none of the mechanisms evaluated herein are statistically associated with surgical intervention. Clinical Question/Level of Evidence: Therapeutic, III.

The facial skeleton: Armor to the brain?

BACKGROUND

With the development of urban setting worldwide, the major issue of concern is the increase in the mortality rate in the population due to road traffic accidents. The face, being the most exposed region is susceptible to injuries and maybe associated with injuries to the adjacent neuro-cranium. The literature has conflicting views on the relationship between facial fractures and head injuries with some authors opining that the facial skeleton cushions the brain while some other authors claim that the facial fractures act as indicators for head injuries.

OBJECTIVES

To analyze the correlation between the facial fractures and head injuries and to assess if the facial skeleton acts to protect the brain from injury.

PATIENTS AND METHODS

A prospective study that included patients who reported to the emergency department of Basaveswar Teaching and General Hospital, Gulbarga, during 2 years, between August 2013 and July 2015 was conducted. A total of 100 patients with facial fractures were enrolled in the study.

RESULTS

Head injuries were sustained by 51 patients in the study. Maximum number of patients was in the age group of 20-29 with a male to female ratio of 10.1:1. The mandible was the most frequently fractured bone in the facial skeleton followed by the zygomatico-maxillary complex. A majority (96%) of patients with head injuries had fractures of either the upper third or the middle third of the face. Contusions and pneumocephalus were the most common head injury encountered. The Glasgow Coma Scale score was significantly lower in patients with associated head injuries as compared to those patients with facial trauma alone. The mortality rate in the study was 2% with both the victims having sustained middle third and upper third fractures respectively with associated head injuries.

CONCLUSION

The facial skeleton does not act to cushion the brain from injury but, in fact, the facial trauma victims should be considered potential head injury patients.

Reconstruction-Based Digital Dental Occlusion of the Partially Edentulous Dentition

Partially edentulous dentition presents a challenging problem for the surgical planning of digital dental occlusion in the field of craniomaxillofacial surgery because of the incorrect maxillomandibular distance caused by missing teeth. We propose an innovative approach called Dental Reconstruction with Symmetrical Teeth (DRST) to achieve accurate dental occlusion for the partially edentulous cases. In this DRST approach, the rigid transformation between two symmetrical teeth existing on the left and right dental model is estimated through probabilistic point registration by matching the two shapes. With the estimated transformation, the partially edentulous space can be virtually filled with the teeth in its symmetrical position. Dental alignment is performed by digital dental occlusion reestablishment algorithm with the reconstructed complete dental model. Satisfactory reconstruction and occlusion results are demonstrated with the synthetic and real partially edentulous models.

Analysis of radiographically confirmed blunt-mechanism facial fractures

Facial fractures resulting from blunt-mechanism trauma, although common, have been infrequently evaluated in large studies that do not include confirmation of fractures based on author review of available patient radiographic studies. An 8-year review (1998-2006) of the R Adams Cowley Shock Trauma Registry was performed with institutional review board approval. Patients diagnosed with blunt-mechanism facial fractures were identified by the International Classification of Diseases, Ninth Revision (ICD-9) codes and their facial fractures confirmed by author review of computed tomographic scans. Individual fractures were classified and grouped according to the facial thirds. Intra- and interreader variability was calculated, and confirmed fracture patterns were compared to fracture patterns listed by ICD-9 codes. Concomitant injuries and demographic data were additionally evaluated. Four thousand three hundred ninety-eight patients with 8127 fractures were identified. Intra- and interreader variability was 2% and 7%, respectively. ICD-9 coding misdiagnosed 12.5% of all fractures. Eighty-two percent of patients sustained associated injuries, including basilar skull fractures (7.6%) and cervical spine fractures (6.6%). 1.1% had at least one fracture in each facial third (panfacial fracture pattern). Significant relationships were found between demographic parameters, concomitant injuries, specific fractures, and fracture patterns. Studies investigating facial fractures should report fracture patterns confirmed by author review of available radiographic imaging. Large retrospective data sets containing confirmed fractures and capable of addressing rare fracture patterns can be compiled with low inter- and intrauser variability, and are useful for generating mechanistic hypotheses suitable for evaluation in prospective series or by directed biomechanical studies.

Traumatic head injuries in patients with maxillofacial fractures: a retrospective case-control study

OBJECTIVES

To analyse and evaluate the correlation between traumatic head injuries (THIs) and maxillofacial fractures (MF). Age, gender and trauma mechanism correlated with THI were also investigated.

PATIENTS AND METHODS

We conducted a hospital-based retrospective case-control study at Stomatology College and Hospital, Wuhan University. From January 2000 to December 2009, a total of 1131 patients with MF were enrolled in the statistical study to evaluate the association of THI and other risk factors with MF. Among these patients, 86 presented with THI. We utilized binary logistic regression and risk analysis to investigate the associations among MF and other risk factors with HI.

RESULTS

Head injuries (103 injuries) were sustained by 86 patients (7.6%), with male-to-female ratio of 4.1:1.0. Most of the patients (52 patients, 50.5%) also exhibited cranial bone fractures. The age group with most patients was the 30-39 years age group (26 patients, 30.2%), followed by the 19-29 years age group (22 patients, 25.6%). Motor vehicle accident (MVA) was the most common mechanism of injury (49 patients, 74.1%). Patients older than 50 years showed the highest risk for head injury (OR, 2.0; 95% confidence interval, 1.1-3.7; P = 0.025). MVA had a sixfold risk of head injury (OR, 6.2; 95% confidence interval, 1.5-26.1; P = 0.013). Head injuries were more prone to occur in patients who had combined fracture of the mid-face and mandible (OR = 4.6, P < 0.001), and only a 0.3-fold risk of multimandible fractures (P < 0.001), 0.5-fold risk of single mandibular fracture (P = 0.017) and 0.3-fold risk of patients who sustained only single mandibular condylar fracture (P = 0.019).

CONCLUSIONS

The occurrence of head injuries is significantly related to age, aetiology and the pattern and position of maxillofacial fractures.

Frontobasilar fractures: proposal for image reviewing algorithm

OBJECTIVE

The aim of this study was to develop and test the utility of a novel systematic protocol to analyze CT images of patients with trauma in the anterior cranial base and upper midface.

MATERIAL AND METHODS

The radiological data and primary reports of 27 consecutive patients with a frontal skull base fracture treated in two tertiary care hospitals from 2007 to 2011 were scrutinized. A novel algorithm for systematic image reviewing was used to assess the CT images and the findings were compared with the primary radiological reports.

RESULTS

The systematic review detected a substantial number of fractures and defects in anatomical structures that had not been systematically reported in the primary, on-call reports. Anterior skull base fracture was not initially reported in 32% of the patients; however, the algorithm detected this in 93% of them. The corresponding rates for fracture through cribriform plate were 28% and 72% and for fracture through the sella or hypophyseal area 22% and 78%. There were two fractures of the clivus and these were initially missed.

CONCLUSIONS

Despite the failure to identify these fractures radiologically in the primary setting, all patients were still considered to have received appropriate treatment, but, the use of an image-reviewing algorithm will enhance the specificity of CT in the diagnosis of frontobasilar fractures.