Pediatric Non-Accidental Trauma & Child Abuse
Comprehensive emergency evaluation, diagnostic workup, and protocolized intervention for pediatric non-accidental trauma (NAT) and physical child abuse: clinical validation of the TEN-4-FACESp sentinel bruising decision rule; high-specificity fracture patterns including metaphyseal corner/bucket-handle fractures and posterior rib fractures; complete 21-view Skeletal Survey protocols and 14-day follow-up imaging; Abusive Head Trauma (AHT/shaken baby syndrome) triad of subdural hemorrhage, diffuse multilayered retinal hemorrhages, and encephalopathy; organic medical mimics (osteogenesis imperfecta, coagulopathies, mongolian spots); and legal mandatory reporting protocols.
Resuscitation Quick Actions • First 2 Minutes
TEN-4-FACESp Bruising Rule
Bruising on: Torso, Ears, Neck in child < 4 years OR ANY bruising in an infant < 4.9 months of age OR bruising on Frenulum, Angle of jaw, Cheeks, Eyelids, Submental area -> Stat NAT evaluation
Posterior Rib Fractures
Posterior rib fractures adjacent to the costovertebral joint are virtually 100% SPECIFIC for non-accidental thoracic squeezing (violent chest compression)
Metaphyseal Bucket-Handle
Classic Metaphyseal Lesion (CML) represents microfracture of the primary spongiosa caused by violent shaking or torsional traction -> Highly specific for abuse
Skeletal Survey Protocol
Complete 21-view plain radiographic series in all children < 2 years with suspected NAT; repeat survey in 14 days to identify new periosteal callus formation
Abusive Head Trauma (AHT)
Subdural hematomas of differing ages (especially interhemispheric or over convexity) + encephalopathy + bilateral multilayered retinal hemorrhages extending to periphery
Mandatory Legal Duty
Physicians are legally mandated reporters; reasonable suspicion is the sole legal threshold for reporting to CPS/law enforcement (proof of guilt is not required)
Bottom-Line Clinical Pearl
In infants and young children, 'those who don't cruise, shouldn't bruise': ANY bruise in an infant under 4 months of age, or bruises on the Torso, Ears, or Neck in a child under 4 years old (the TEN-4-FACESp rule), represents a sentinel injury of physical abuse with high risk for escalating, fatal trauma if missed. Metaphyseal corner/bucket-handle fractures (avulsion of the primary spongiosa from violent shaking or twisting) and posterior rib fractures (from violent chest squeezing) are pathognomonic for non-accidental trauma. In any suspected child abuse case under 2 years of age, obtain a complete 21-view Skeletal Survey, non-contrast Head CT, dilated retinal exam, and make an immediate mandatory report to Child Protective Services (CPS).
Sentinel injuries are minor injuries (bruises or intraoral tears) that precede severe or fatal abusive trauma. Studies demonstrate that up to 25% to 50% of infants presenting with fatal abusive head trauma had a previous sentinel bruise that was dismissed by medical providers as an accidental bump. The TEN-4-FACESp rule provides validated, objective clinical criteria to identify physical abuse:
| Anatomical Location/Parameter | Clinical Criteria & Age Group | Biomechanical Mechanism & Abuse Significance |
|---|---|---|
| TEN (Torso, Ears, Neck) | Any bruising on the Torso, Ears (pinna or behind ear), or Neck in a child under 4 years of age. | Children < 4 years who fall accidentally sustain bruises over bony prominences (forehead, knees, shins). The torso, ears, and neck are protected, fleshy regions; bruising here indicates direct blows, pinching, or strangulation. |
| 4 Months (Infant Rule) | ANY BRUISE, ANYWHERE on an infant under 4.9 months of age (or pre-cruising infant). | Infants under 4-5 months cannot roll over or crawl. 'Those who don't cruise, shouldn't bruise.' Accidental bruising in this age group occurs in < 1% of infants. Any bruise carries > 95% specificity for physical abuse! |
| FACESp (Facial Additions) | Bruising on the Frenulum (torn labial or lingual frenulum from forced bottle/pacifier feeding), Angle of jaw, Cheeks, Eyelids, or Submental area in a child under 4 years. | Facial bruising indicates direct slaps, punches, or forceful gagging. A torn labial frenulum in an infant is pathognomonic for abusive blunt impact or forceful bottle jamming. |
| p (Patterned Bruises) | Bruises reflecting the shape of an instrument: loop marks (folded electric cord), linear parallel rail-track bruises (belt or stick), bite marks (> 3 cm intercanine distance = adult bite), handprint slap marks. | Direct, unmistakable evidence of physical punishment or assault. |
Fractures are the second most common presentation of physical child abuse after bruising. Certain skeletal fractures have extraordinarily high specificity for abusive mechanical force:
| Fracture Type | Radiographic Hallmark & Anatomy | Diagnostic Specificity for Abuse |
|---|---|---|
| Classic Metaphyseal Lesion (CML)/'Bucket-Handle' & 'Corner' Fracture | Avulsion fracture across the immature primary spongiosa of the metaphysis (distal femur, proximal/distal tibia, proximal humerus). When viewed obliquely, appears as a thin crescentic bone rim (bucket-handle); when viewed in profile, appears as a small triangular fragment (corner fracture). | EXTREMELY HIGH SPECIFICITY (> 95%) for non-accidental trauma. Produced by violent flailing, twisting, shaking, or forceful traction on an extremity. (Accidental falls NEVER produce CMLs!). |
| Posterior Rib Fractures | Fractures located posteriorly, adjacent to the costovertebral joint near the spine. | VIRTUALLY 100% SPECIFIC FOR PHYSICAL ABUSE. Caused by an adult violently grasping an infant's chest and squeezing with severe anteroposterior compression. (Standard CPR chest compressions almost never cause posterior rib fractures!). |
| Scapular, Sternal & Spinous Process Fractures | Fractures of non-weight-bearing flat bones (scapula, sternum) or vertebral spinous processes. | High specificity for direct focal severe blunt impacts. |
| Long Bone Diaphyseal Fractures (Femur/Humerus) | Transverse, spiral, or oblique midshaft fractures in non-ambulatory infants (< 12-18 months). | Moderate-to-high specificity in pre-ambulatory children. (A spiral femur fracture in an infant < 1 year is abuse until proven otherwise; in a running 3-year-old, can result from twisting fall). |
| Toddler's Fracture (Accidental Mimic) | Non-displaced spiral or oblique fracture of the distal tibia in an ambulatory child (age 9 months to 3 years) following a minor twisting fall. | Common accidental injury (low suspicion for abuse if child is walking and story matches). |
Abusive Head Trauma (formerly 'shaken baby syndrome') is the leading cause of fatal child abuse. Violent rotational acceleration-deceleration forces shear bridging cerebral veins, damage the retinochoroidal interface, and produce catastrophic diffuse axonal injury:
| Pathological Component | Diagnostic Imaging/Findings | Clinical Pearl & Pitfall |
|---|---|---|
| Subdural Hematoma (SDH) | Non-contrast Head CT demonstrates subdural hematomas along the interhemispheric fissure (falx cerebri), tentorium, or over the cerebral convexities. Often shows hematomas of differing chronological ages (hyperdense acute blood mixed with hypodense subacute/chronic fluid). | Accidental short household falls (< 3-4 feet from a couch or bed) almost NEVER produce interhemispheric or multi-focal subdural hematomas! Accidental falls typically produce isolated epidural hematomas with skull fractures. |
| Multilayered Retinal Hemorrhages | Dilated funduscopic examination performed by an ophthalmologist shows diffuse, bilateral, multilayered (intraretinal, subretinal, preretinal) hemorrhages extending to the far periphery (ora serrata), often accompanied by retinal schisis (retinal tearing). | Pathognomonic for severe violent vitreoretinal traction. Accidental CPR or simple falls never produce diffuse peripheral retinal hemorrhages. |
| Hypoxic-Ischemic Encephalopathy (HIE) | Diffuse cerebral edema, loss of gray-white matter differentiation ('reversal sign'), and secondary infarction from apnea/brainstem injury. | Infants often present with non-specific lethargy, poor feeding, irritability, seizures, or apnea without any external marks of trauma on the scalp. |
| Patient Age & Presentation | Mandatory Diagnostic Battery | Medical Mimic Exclusions |
|---|---|---|
| Child < 2 Years with Suspected NAT or Unexplained Fracture/Bruise | 1. Complete 21-View Plain Radiographic Skeletal Survey (skull, C/T/L spine, ribs, pelvis, long bones, hands, feet). 2. Repeat Skeletal Survey in 14 Days (identifies occult healing fractures by new subperiosteal bone formation). 3. Non-Contrast Head CT with bone windows. 4. Dilated Ophthalmology Exam within 24 hours. 5. Hepatic/Pancreatic Enzymes & Urinalysis (AST, ALT, Amylase, Lipase: detects occult blunt abdominal trauma). | Rule out organic disorders: - Osteogenesis Imperfecta (OI): blue sclerae, wormian bones on skull X-ray, COL1A1/COL1A2 genetic testing. - Bleeding Diatheses: check CBC, PT/INR, aPTT, Factor VIII/IX, vWF panel. - Congenital Dermal Melanocytosis (Mongolian spots): blue-grey macular pigmentation over sacrum present since birth without swelling. |
| Mandatory Reporting Duty | Immediate telephone notification to Child Protective Services (CPS) and local law enforcement, followed by written report within 36-48 hours. | LEGAL IMMUNITY: All 50 states grant legal immunity to healthcare providers who report child abuse in good faith. You do NOT need proof; 'reasonable suspicion' is the sole legal threshold! Never attempt to investigate or interrogate the parents. |
The Dismissed Sentinel Bruise Trap & The Interrogating Parents Hazard
The most fatal error in pediatric emergency medicine is dismissing a 'minor' bruise in an infant as an innocent bump: in children under 4 months of age who cannot crawl or pull to stand, accidental bruising is essentially non-existent. Studies confirm that over 30% of infants who die from abusive head trauma had a previously documented sentinel bruise on the ear, neck, or cheek that was overlooked by a physician who failed to apply the TEN-4-FACESp rule. If an infant has a bruise, order a Skeletal Survey, Head CT, and alert Child Protective Services immediately. Concurrently, NEVER confront or interrogate the parents in the emergency department: confronting parents provokes immediate defensive hostility, can lead to abduction of the child from the hospital against medical advice, and jeopardizes child safety. Maintain a calm, neutral, objective posture, admit the child to the hospital for 'further observation and pediatric evaluation', and allow hospital social work, CPS, and child abuse pediatric specialists to conduct the formal investigation.
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