Prevalence and relevance of pediatric spinal fractures in suspected child abuse

Abusive spinal injury: imaging and updates

Child physical abuse has significant morbidity and mortality in the pediatric population. There is growing evidence that abusive spinal injury has been under-recognized, changing historical perceptions that these injuries are relatively uncommon. Increased utilization of MRI has been pivotal in recognizing that most abusive spinal injuries involve the soft tissues and ligaments or manifest as intrathecal blood products, which are often undetectable by radiography or CT. Detecting spinal injury in the work-up of non-accidental trauma improves management for abused children and their siblings (defined as siblings or other household members). This review highlights key points in the imaging literature of abusive spinal injury, describes typical patterns of injury, and addresses appropriate imaging practice for work-up.

ESR Essentials: imaging of suspected child abuse-practice recommendations by the European Society of Paediatric Radiology

The goal of this paper is to provide a useful desktop reference for the imaging of suspected child abuse with clear, age-specific pathways for appropriate evidence-based imaging and follow-up. We aim to provide a road map for the imaging evaluation and follow-up of this important and vulnerable cohort of patients presenting with signs and symptoms concerning for inflicted injury. As the imaging recommendations differ for children of different ages, we provide a flowchart of the appropriate imaging pathway for infants, toddlers, and older children, which allows ease of selection of which children should undergo skeletal survey, non-contrast computed tomography (CT) brain with 3-dimensional (D) reformats, and magnetic resonance imaging (MRI) of the brain and whole spine. For ease of review, we include a table of the common intracranial and spinal patterns of injury in abusive head trauma. We summarise search patterns, areas of review, and key findings to include in the report. To exclude skeletal injury, infants and children under 2 years of age should undergo a full skeletal survey in accordance with national guidelines, with a limited follow-up skeletal survey performed 11-14 days later. For children over 2 years of age, the need for skeletal imaging should be decided on a case-by-case basis. All infants should undergo a non-contrast-enhanced CT brain with 3-D reformats. If this is normal with no abnormal neurology, then no further neuroimaging is required. If this is abnormal, then they should proceed to MRI brain and whole spine within 2-5 days. Children older than 1 year of age who have abnormal neurology and/or findings on skeletal survey that are suggestive of inflicted injury should undergo non-contrast CT brain with 3-D reformats and, depending on the findings, may also require MRI of the brain and whole spine. We hope that this will be a helpful contribution to the radiology literature, particularly for the general radiologist with low volumes of paediatrics in their practice, supporting them with managing these important cases when they arise in daily practice. KEY POINTS: The choice of initial imaging (skeletal survey and/or brain CT) depends on the age of the child in whom abuse is suspected. A follow-up skeletal survey is mandatory 11-14 days after the initial survey. If an MRI of the brain is performed, then an MRI of the whole spine should be performed concurrently.

Age-specific Patterns of Intimate Partner Violence Related Injuries in US Emergency Departments

PURPOSE

To identify intimate partner violence (IPV)-related injury patterns of U.S. patients of three age groups: <18 years (adolescents), 18-25 years (emerging adults), and >25 years (adults).

METHODS

We performed a nationally representative retrospective review of all patients presenting to U.S. Emergency Department for IPV-related injuries from 2005 through 2020. Demographics and injury patterns were calculated using statistical methods accounting for the weighted stratified data. Main outcomes were injury morphology, mechanism, severity, location, and temporal associations of IPV-related injuries among the three age groups.

RESULTS

There was a higher proportion of female victims, sexual assault cases, and lower trunk injuries among adolescents compared to emerging adults and adults. There was increasing injury severity, fractures, and hospital admissions with increasing age. Adolescents experienced a greater prevalence of fractures of the head, neck, hands, fingers, and distal lower extremity, while trunk fractures increased with age. The peak prevalence of violence-related Emergency Department visits among adolescents was in June and September, with the peak day as Tuesday.

DISCUSSION

Injurious forms of IPV are prevalent across all age groups, with sexual assault cases demonstrably higher among adolescents and increasing severity of injuries as victims age. Identification of age-specific injury patterns will aid health-care professionals and policymakers in developing targeted interventions for adolescents who experience IPV.

Imaging of Abusive Head Trauma in Children

In this article, we describe relevant anatomy, mechanisms of injury, and imaging findings of abusive head trauma (AHT). We also briefly address certain mimics of AHT, controversies, pearls, and pitfalls. Concepts of injury, its evolution, and complex nature of certain cases are highlighted with the help of case vignettes.

Whole-Spine MRI in Children With Suspected Abusive Head Trauma

BACKGROUND. Abusive head trauma (AHT) in children has recently been associated with findings on cervical spine MRI. OBJECTIVE. The purpose of this study was to evaluate whether whole-spine MRI in children with suspected AHT shows additional abnormalities not identified on cervical spine MRI. METHODS. This retrospective study included 256 children younger than 3 years old (170 boys, 86 girls; mean age, 5.9 months) who underwent skeletal survey and head MRI for suspected child abuse from January 2019 to December 2020. Per institutional protocol, children with suspected AHT also underwent whole-spine MRI. AHT diagnoses were established by a combination of clinical information from medical record review and injuries described in reports from skeletal survey, head MRI, and head CT (if performed). Two pediatric neuroradiologists independently reviewed whole-spine MRI examinations for presence and level of intraspinal hemorrhage (classified as subarachnoid, subdural, or epidural), ligamentous injury, spinal cord edema, and vertebral fractures; subdural hematoma, epidural hematoma, ligamentous injury, and fracture unidentified by skeletal survey were considered major findings. Interobserver agreement was assessed; a third radiologist resolved discrepancies. Findings were summarized with attention to injuries isolated to the thoracolumbar spine. RESULTS. A total of 148 of 256 (57.8%) children underwent whole-spine MRI. AHT was diagnosed in 79 of 148 (53.4%) children who underwent whole-spine MRI versus in 2 of 108 (1.9%) who did not undergo whole-spine MRI (p < .001). Interobserver agreement, expressed as kappa coefficient, was 0.90 for intraspinal hemorrhage, 0.69 for ligamentous injury, 0.66 for spinal cord edema, and 0.95 for fracture. A total of 57 of 148 (38.5%) whole-spine MRI examinations showed injuries, and 34 of 148 (23.0%) showed injuries localized to the thoracolumbar spine. A total of 47 of 148 (31.8%) whole-spine MRI examinations showed major findings, of which 24 (51.1%) were localized to the thoracolumbar spine. Isolated thoracolumbar injuries included 23 of 34 spinal subdural hematomas, 2 of 3 spinal epidural hematomas, and 9 of 11 vertebral fractures, including five fractures not identified by skeletal survey. Diagnosis of AHT was more common in children with positive, versus negative, whole-spine MRI examinations (76.8% vs 39.1%; p < .001). CONCLUSION. In children with suspected AHT, whole-spine MRI commonly shows isolated thoracolumbar injuries. CLINICAL IMPACT. The results support performing whole-spine MRI rather than cervical spine MRI in children with suspected AHT.

Pediatric Spine Trauma

Pediatric spine has growth potential with incomplete ossification, and also unique biomechanics which have important implications for trauma patients. This article intends to review various aspects of pediatric spine trauma including epidemiology, anatomy and biomechanics, and clinically relevant details of each type of injury based on the location and mechanism of injury. With the appropriate but not superfluous treatment, pediatric spine trauma patients can have better chance of recovery. Therefore, as a spine surgeon, understanding the general concept for each injury subtype together with the debate and progress in the field is inevitable.

Pearls and Pitfalls of Thoracic Manifestations of Abuse in Children

Child abuse is a broad term that includes, but is not limited to, physical or emotional harm, neglect, sexual abuse, and exploitation. In 2018 in the United States, there were nearly 700,000 victims of such maltreatment, of which 1700 children died. The majority of deaths occur in infants and toddlers under 3 years of age. While clinical signs and symptoms may raise suspicion for inflicted injury, such as bruising in young infants, imaging often plays a central role in identifying and characterizing nonaccidental trauma. The purpose of this article is to discuss the array of inflicted traumatic injuries to the thorax in children. Rib fractures are among the most common and telling features of physical abuse, especially in infants. The locations of such fractures and differences in appearance while healing will be presented, along with potential mimics and pitfalls. Less typical fractures seen in abuse will also be reviewed, including those of the sternum, clavicle, spine, and scapula. Finally, uncommon injuries to the lungs, heart and esophagus will also be considered.

Child Abuse with Thoracolumbar Fracture-Dislocation Treated with Pedicle Screw Fixation in a 2-Year-Old: A Case Report

CASE

A nonverbal 2-year-old boy presented with acute-on-chronic thoracolumbar fracture-subluxation with associated chylothorax and progressive neurologic dysfunction secondary to nonaccidental trauma. We discussed the successful management of this patient with short-segment pedicle screw instrumentation resulting in complete resolution of his chylothoraxes and neurologic impairment. A clinical follow-up is reported out to 12 months after hardware removal.

CONCLUSION

Thoracolumbar fracture-subluxation with massive chylothorax is a rare and important presentation of nonaccidental trauma that must be recognized. Temporary pedicle screw fixation is a successful treatment option for young children presenting with this difficult spinal pathology.

Whole-body MR imaging in suspected physical child abuse: comparison with skeletal survey and bone scintigraphy findings from the PEDIMA prospective multicentre study

OBJECTIVES

To assess the contribution of whole-body magnetic resonance imaging (WBMRI) and bone scintigraphy (BS) in addition to skeletal survey (SS) in detecting traumatic bone lesions and soft-tissue injuries in suspected child abuse.

METHODS

In this prospective, multicentre, diagnostic accuracy study, children less than 3 years of age with suspected physical abuse were recruited. Each child underwent SS, BS and WBMRI. A blinded first review was performed in consensus by five paediatric radiologists and three nuclear medicine physicians. A second review investigated discrepancies reported between the modalities using a consensus result of all modalities as the reference standard. We calculated the sensitivity, specificity and corresponding 95% confidence interval for each imaging modality (SS, WBMRI and BS) and for the combinations [SS + WBMRI] and [SS + BS].

RESULTS

One hundred seventy children were included of which sixty-four had at least one lesion. In total, 146 lesions were included. The sensitivity and specificity of each examination were, respectively, as follows: 88.4% [95% CI, 82.0-93.1] and 99.7% [95% CI, 99.5-99.8] for the SS, 69.9% [95% CI, 61.7-77.2] and 99.5% [95% CI, 99.2-99.7] for WBMRI and 54.8% [95% CI, 46.4-63.0] and 99.7% [95% CI, 99.5-99.9] for BS. Sensitivity and specificity were, respectively, 95.9% [95% CI, 91.3-98.5] and 99.2% [95% CI, 98.9-99.4] for the combination SS + WBMRI and 95.2% [95% CI, 90.4-98.1] and 99.4% [95% CI, 99.2-99.6] for the combination SS + BS, with no statistically significant difference between them.

CONCLUSION

SS was the most sensitive independent imaging modality; however, the additional combination of either WBMRI or BS examinations offered an increased accuracy.

KEY POINTS

• SS in suspected infant abuse was the most sensitive independent imaging modality in this study, especially for detecting metaphyseal and rib lesions, and remains essential for evaluation. • The combination of either SS + BS or SS + WBMRI provides greater accuracy in diagnosing occult and equivocal bone injuries in the difficult setting of child abuse. • WBMRI is a free-radiation technique that allows additional diagnosis of soft-tissue and visceral injuries.

Shaken Baby Syndrome: Magnetic Resonance Imaging Features in Abusive Head Trauma

In the context of child abuse spectrum, abusive head trauma (AHT) represents the leading cause of fatal head injuries in children less than 2 years of age. Immature brain is characterized by high water content, partially myelinated neurons, and prominent subarachnoid space, thus being susceptible of devastating damage as consequence of acceleration-deceleration and rotational forces developed by violent shaking mechanism. Diagnosis of AHT is not straightforward and represents a medical, forensic, and social challenge, based on a multidisciplinary approach. Beside a detailed anamnesis, neuroimaging is essential to identify signs suggestive of AHT, often in absence of external detectable lesions. Magnetic resonance imaging (MRI) represents the radiation-free modality of choice to investigate the most typical findings in AHT, such as subdural hematoma, retinal hemorrhage, and hypoxic-ischemic damage and it also allows to detect more subtle signs as parenchymal lacerations, cranio-cervical junction, and spinal injuries. This paper is intended to review the main MRI findings of AHT in the central nervous system of infants, with a specific focus on both hemorrhagic and non-hemorrhagic injuries caused by the pathological mechanisms of shaking. Furthermore, this review provides a brief overview about the most appropriate and feasible MRI protocol to help neuroradiologists identifying AHT in clinical practice.

Prevalence and distribution of occult fractures on skeletal surveys in children with suspected non-accidental trauma imaged or reviewed in a tertiary Dutch hospital

PURPOSE

The purpose of the study was to determine the rate of occult fractures (without clinical symptoms) per presenting clinical injury i.e., children presenting with a fracture, bruise, abusive head trauma and the types of fracture most likely to be found, in a series of infants and young children suspected of being victims of NAT.

METHODS

Skeletal surveys done between 2008 and 2018 of children (< 5 years) were retrospectively analyzed. Both radiographs of admitted children and reassessment images from all over the country were included and reviewed by a forensic paediatric radiologist. Deceased children were excluded. Variables as gender, age, initial clinical injury and occult fractures were collected. Occult fractures on the follow-up skeletal survey were collected.

RESULTS

A total of 370 skeletal surveys of 296 children were included. Median age was 22 weeks (IQR 11-48), there were 172 (58%) boys. A total of 195 occult fractures were detected in 111 (32%) children. Occult fractures were detected in 37/126 (29%) children with fracture as presenting symptom, 33/90 (37%) children with head trauma and 26/50 (52%) children with bruises. Rib (n = 56, 50%) and lower leg (n = 40, 36%) fractures were most detected.

CONCLUSION

Occult fractures were detected in 32% of the children. Occult fractures were most prevalent if the initial clinical injury suggestive for NAT to request skeletal survey was a bruise, abusive head trauma or fracture.

Abusive Pediatric Thoracolumbar Fracture Due to Forced Hyperextension: Case Report, Biomechanical Considerations, and Review of the Literature

Pediatric thoracolumbar fractures are rare due to the physiological differences which afford greater resilience to the immature spine. Most pediatric thoracolumbar fractures occur as the result of high energy trauma, such as motor vehicle accidents, and modes of reasonable accidental injuries are limited by age and developmental capabilities of the child. These fractures can occur as the result of inflicted blunt force trauma and child abuse, and in most cases, the mechanism of injury to the spine is not known. We report the death of a 29-month-old man due to blunt force trauma to the back and forced hyperextension of the thoracolumbar spine causing fracture of the fourth lumbar (L4) vertebral body. A complete forensic examination revealed a previous healing fracture of the anterior aspect of the L4 vertebral body, with acute disruption of the anterior longitudinal ligament overlying the fracture site, complete fracture of the vertebral body, and fatal retroperitoneal hemorrhage. We present a review of the biomechanical considerations of the pediatric spine, a survey of pediatric spinal fractures, and a review of the literature on pediatric abusive thoracolumbar fractures. In this case, there was never a provided explanation for how the injury occurred; however, understanding the biomechanics of the pediatric spine allowed for the determination of the mechanism, force required to produce this specific pattern of abusive spinal injury, and the manner of death.

Retrospondyloptosis of the Spine Secondary to Nonaccidental Trauma

Spinal fracture rates from NAT have been reported in <1-3% of spinal injury cases. We present a 13-month-old female who presented with signs of spinal cord injury and was found to have complete retrospondylolisthesis of T12 vertebra and multiple rib fractures in various stages of healing due to NAT. This case reports an extremely severe spinal injury due to NAT of which there are few in the literature and highlights the importance of suspicion of NAT when pediatric patients present with neurologic symptoms and spinal trauma without plausible mechanism of injury.

Skeletal surveys in young, injured children: A systematic review

Skeletal surveys (SSs) have been identified as a key component of the evaluation for suspected abuse in young children, but variability in SS utilization has been reported. Thus, we aimed to describe the utilization patterns, yield, and risks of obtaining SS in young children through a systematic literature review. We searched PubMed/MEDLINE and CINAHL databases for articles published between 1990 and 2016 on SS. We calculated study-specific percentages of SS utilization and detection of occult fractures and examined the likelihoods that patient characteristics predict SS utilization and detection of occult fractures. Data from 32 articles represents 64,983 children <60months old. SS utilization was high (85%-100%) in studies of infants evaluated by a child protection team for suspected abuse and/or diagnosed with abuse except in one study of primarily non-pediatric hospitals. Greater variability in SS utilization was observed across studies that included all infants with specific injuries, such as femur fractures (0%-77%), significant head injury (51%-82%), and skull fractures (41%-86%). Minority children and children without private insurance were evaluated with SS more often than white children and children with private insurance despite lack of evidence to support this practice. Among children undergoing SS, occult fractures were frequently detected among infants with significant head injury (23%-34%) and long bone fractures (30%) but were less common in infants with skull fractures (1%-6%). These findings underscore the need for interventions to decrease disparities in SS utilization and standardize SS utilization in infants at high risk of having occult fractures.

Imaging in paediatric spinal injury

Background

Paediatric spinal injury is rare and exhibits many unique features. Attending clinicians and radiologists often lack knowledge, expertise and experience in dealing with a potential injury to the paediatric spine. Within the paediatric age range itself there are different age-dependent mechanisms that can injure the paediatric spine. Moreover, the anatomical features and degree of osseous maturity of the developing paediatric spine determine the biomechanical characteristics which promote unique patterns of spinal injury in each paediatric age group.

Methods

An expert illustrated narrative review of the literature.

Results

Multiple factors make the imaging interpretation of the injured paediatric spine challenging. Each imaging modality has strengths and weaknesses in depicting spinal anatomy which vary with the type of spinal injury and age of the paediatric patient.

Conclusions

Attending doctors need to be familiar with the imaging appearances of the normal paediatric spine, its normal variants as well as the imaging features characteristics of paediatric spinal injury seen on radiographs, computed tomography and magnetic resonance imaging.

Distraction Injury of the Thoracic Spine With Spinal Cord Transection and Vascular Injury in a 5-Week-Old Infant Boy: A Case of Child Physical Abuse

Distraction injury of the spine with spinal cord transection and adjacent vascular injury is rarely described in the setting of child physical abuse. We report a 5-week-old infant boy who sustained these injuries after an abusive event. The clinical presentation, imaging findings, and recommended evaluation modalities are discussed. An overview of pediatric spinal column and vascular injuries secondary to physical abuse is given.

The radiologist's role in child abuse: imaging protocol and differential diagnosis

Child abuse or nonaccidental trauma is a major problem worldwide; in Spain, there are about 12,000 victims per year. The detection of specific lesions or findings that are incongruent with the reported mechanism of trauma mean that radiologists are often the physician responsible for sounding the alarm in cases of abuse. The triad consisting of subdural hematoma, metaphyseal fracture, and posterior rib fractures is very characteristic of the battered child syndrome. The finding of acute and chronic lesions in the same patient is highly specific for nonaccidental trauma. Fractures of long bones in patients who have yet begun to walk should also alert to possible child abuse. Lesions that are highly specific for abuse, such as classic metaphyseal fractures or posterior rib fractures, can be difficult to demonstrate radiographically and are usually clinically occult. The American College of Radiology (ACR) protocols recommend obtaining three separate X-rays of each upper and lower limb. It is important to use X-ray systems that give high resolution images with low kilovoltage (50-70 kvp) and appropriate milliamperage. A skeletal survey consisting of a series of images collimated to each body region is recommended for all children under the age of two years in whom abuse is suspected. A follow-up skeletal survey about two weeks after the initial survey is useful for detecting new fractures and for assessing the consolidation of others, which helps in dating the lesions. Head injuries are the leading cause of death in abused children. Although computed tomography is the first neuroimaging technique in nonaccidental trauma, magnetic resonance imaging of the head can better characterize the lesions seen on computed tomography and can help to estimate the age of the lesions.

Pediatric spinal injury in the US: epidemiology and disparities

OBJECT

In the US, race and economic status have pervasive associations with mechanisms of injury, severity of injury, management, and outcomes of trauma. The goal of the current study was to examine these relationships on a large scale in the setting of pediatric spinal injury.

METHODS

Admissions for spinal fracture without or with spinal cord injury (SCI), spinal dislocation, and SCI without radiographic abnormality were identified in the Kids' Inpatient Database (KID) and the National Trauma Data Bank (NTDB) registry for 2009. Patients ranged in age from birth up to 21 years. Data from the KID were used to estimate nationwide annual incidences. Data from the NTDB were used to describe patterns of injury in relation to age, race, and payor, with corroboration from the KID. Multiple logistic regression was used to model rates of mortality and spinal fusion.

RESULTS

In 2009, the estimated incidence of hospital admission for spinal injury in the US was 170 per 1 million in the population under 21 years of age. The incidence of SCI was 24 per 1 million. Incidences varied regionally. Adolescents predominated. Patterns of injury varied by age, race, and payor. Black patients were more severely injured than patients of other races as measured by Injury Severity Scale scores. Among black patients with spinal injury in the NTDB, 23.9% suffered firearm injuries; only 1% of white patients suffered firearm injuries. The overall mortality rate in the NTDB was 3.9%. In a multivariate analysis that included a large panel of clinical and nonclinical factors, black race retained significance as a predictor of mortality (p = 0.006; adjusted OR 1.571 [1.141-2.163]). Rates of spinal fusion were associated with race and payor in the NTDB data and with payor in the KID: patients with better insurance underwent spinal fusion at higher rates.

CONCLUSIONS

The epidemiology of pediatric spinal injury in the US cannot be understood apart from considerations of race and economic status.

Transverse fractures of the femoral shaft are a better predictor of nonaccidental trauma in young children than spiral fractures are

BACKGROUND

Certain fracture configurations, especially spiral fractures, are often thought to be indicative of nonaccidental trauma in children. The purpose of this study was to determine whether femoral fracture morphology, as determined by an objective measurement (fracture ratio), was indicative of nonaccidental trauma in young children.

METHODS

Consecutive patients who were three years of age or younger and had a closed, isolated femoral shaft fracture treated at an urban pediatric level-I trauma center between 2005 and 2013 were identified. Anteroposterior and lateral fracture ratios (fracture length/bone diameter) were calculated for each patient by a fellowship-trained pediatric orthopaedic surgeon who was blinded to the patient's clinical history. The presence or absence of a Child Protective Services referral as well as institutional Child Assessment Program evaluations were reviewed. Nonaccidental trauma was deemed to be present, absent, or indeterminate by Child Protective Services or an on-site Child Assessment Program team. To further evaluate and quantify the likelihood of nonaccidental trauma, the criteria of the Modified Maltreatment Classification System were used.

RESULTS

Of 122 patients identified, ninety-five met the inclusion criteria for this study. Of these ninety-five, fifty-one (54%) had either a Child Protective Services or a Child Assessment Program consultation because of suspected nonaccidental trauma. Thirteen (25%) were found to have nonaccidental trauma as determined by Child Protective Services or the Child Assessment Program team and seven (14%) had indeterminate Child Protective Services or Child Assessment Program investigations. All thirteen patients with nonaccidental trauma, as well as the seven patients with an indeterminate Child Protective Services or Child Assessment Program investigation, had positive Modified Maltreatment Classification System scores for physical abuse. Patients who had nonaccidental trauma had significantly decreased mean anteroposterior fracture ratios compared with those who had confirmed accidental trauma (p < 0.0001).

CONCLUSIONS

The fracture ratio can be helpful to determine fracture morphology and can be used as part of the assessment of a child with suspected nonaccidental trauma. While not diagnostic, the presence of a transverse diaphyseal femoral fracture in a young child should raise the index of suspicion for nonaccidental trauma.

LEVEL OF EVIDENCE

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

The yield of high-detail radiographic skeletal surveys in suspected infant abuse

BACKGROUND

Skeletal surveys are routinely performed in cases of suspected child abuse, but there are limited data regarding the yield of high-detail skeletal surveys in infants.

OBJECTIVE

To determine the diagnostic yield of high-detail radiographic skeletal surveys in suspected infant abuse.

MATERIAL AND METHODS

We reviewed the high-detail American College of Radiology standardized skeletal surveys performed for suspected abuse in 567 infants (median: 4.4 months, SD 3.47; range: 4 days-12 months) at a large urban children's hospital between 2005 and 2013. Skeletal survey images, radiology reports and medical records were reviewed. A skeletal survey was considered positive when it showed at least one unsuspected fracture.

RESULTS

In 313 of 567 infants (55%), 1,029 definite fractures were found. Twenty-one percent (119/567) of the patients had a positive skeletal survey with a total of 789 (77%) unsuspected fractures. Long-bone fractures were the most common injuries, present in 145 children (26%). The skull was the site of fracture in 138 infants (24%); rib cage in 77 (14%), clavicle in 24 (4.2%) and uncommon fractures (including spine, scapula, hands and feet and pelvis) were noted in 26 infants (4.6%). Of the 425 infants with neuroimaging, 154 (36%) had intracranial injury. No significant correlation between positive skeletal survey and associated intracranial injury was found. Scapular fractures and complex skull fractures showed a statistically significant correlation with intracranial injury (P = 0.029, P = 0.007, respectively).

CONCLUSION

Previously unsuspected fractures are noted on skeletal surveys in 20% of cases of suspected infant abuse. These data may be helpful in the design and optimization of global skeletal imaging in this vulnerable population.

Imaging of skeletal injuries associated with abusive head trauma

Skeletal injuries are commonly encountered in infants and young children with abusive head trauma. Although certain patterns of intracranial injury suggest abuse, none are diagnostic. Therefore demonstration of associated unsuspected skeletal injuries has important implications, particularly when highly specific fractures are present. Skull fractures are commonly associated with intracranial injury, but no fracture pattern is indicative of physical abuse. Other skeletal injuries including classic metaphyseal lesions and rib, spine and scapular fractures are strong predictors of abusive head trauma in infants with intracranial injury. It is mandatory to perform rigorous skeletal surveys in infants and young children with clinical and neuroimaging findings concerning for abusive head trauma.

Spinal injuries in abusive head trauma: patterns and recommendations

A growing body of scientific evidence suggests that there is an association between occult spinal injury and abusive head trauma (previously known as shaken baby syndrome). Consideration needs to be given to the nature of these injuries, the possible causal mechanisms and what investigations should be undertaken to delineate the full extent of spinal involvement in infants with suspected abusive head trauma. This association has the potential to influence our understanding of the biomechanics and subsequent neuropathology associated with abusive head trauma.

Sensitivity of the limited view follow-up skeletal survey

BACKGROUND AND OBJECTIVE

Reducing radiation exposure to minimize risk has been emphasized in recent years. In child abuse, the risk of missing occult injuries is often believed to outweigh radiation risk associated with skeletal surveys. Our hypothesis was that there would be no clinically significant difference in results from a limited view, follow-up skeletal survey (SS2) protocol, which omits spine and pelvis views unless these views have findings on the initial skeletal survey (SS1), compared with a traditional SS2 protocol for radiographic evaluation of suspected physical abuse.

METHODS

This study was a retrospective record review involving 5 child protection teams. Consultations for suspected physical abuse were reviewed to identify subjects <24 months of age who had an SS1 and a traditional SS2. The results of these studies were compared to identify subjects in which newly identified spine and pelvis fractures (fractures seen only on SS2 and not on SS1) would have been missed by using a limited view SS2 protocol.

RESULTS

We identified 534 study subjects. Five subjects had newly identified spine fractures, and no subjects had newly identified pelvis fractures on traditional SS2 studies. Only 1 subject with a newly identified spine fracture would have been missed with the limited view SS2 protocol used in this study (0.2% [95% confidence interval: <0.005-1.0]). None of the newly identified fractures changed the abuse-related diagnosis.

CONCLUSIONS

We found no clinically significant difference in the results of a limited view SS2 protocol versus a traditional SS2 protocol for radiographic evaluation of suspected abuse.

Nuking the radiation: minimizing radiation exposure in the evaluation of pediatric blunt trauma

PURPOSE OF REVIEW

Our objective is to highlight recent literature investigating low-radiation diagnostic strategies in the evaluation of pediatric trauma.

RECENT FINDINGS

In the area of minor head injury, research has focused on implementation of validated clinical decision rules into practice to reduce unnecessary computed tomography scans. Clinical observation may also serve as an adjunct to initial assessment and a potential substitute for computed tomography imaging. Subgroups of children with special needs or severe injury mechanisms may also be safely characterized by the clinical decision rule and spared radiation exposure. Physical examination techniques may be useful in diagnosing mandibular fractures. In addition, evidence suggests that plain radiography for evaluation of blunt thoracic trauma may be sufficient in many cases, and computed tomography could be reserved for those with abnormal radiographs, high-risk mechanisms, or abnormal physical findings. Clinical decision rules are able to predict intra-abdominal injury with high sensitivity. Data suggest that skeletal surveys may be modified to limit radiation exposure in the case of suspected nonaccidental trauma.

SUMMARY

More research is needed in development of pediatric-specific clinical decision rules and risk stratification and in testing low-radiation diagnostic modalities in the pediatric trauma population.