A 9-month-old male infant is brought to the emergency department with a history of "falling from the bed" 2 days ago. On examination, he is irritable with bruising over the torso and ears. Skeletal survey reveals the finding marked **A** in the diagram — a metaphyseal corner fracture of the femur — along with posterior rib fractures and healing callus from an older fracture. The infant is non-ambulatory and has no history of significant trauma. Which of the following is the MOST appropriate next step in management?

Explanation

## Why Option 1 is correct The metaphyseal corner (bucket-handle) fracture marked **A** is a CLASSIC SKELETAL FINDING HIGHLY SUSPICIOUS FOR NON-ACCIDENTAL TRAUMA (NAT) / BATTERED CHILD SYNDROME. This fracture is caused by violent shaking or yanking that shears the metaphysis and has HIGH SPECIFICITY for abuse. Combined with posterior rib fractures (caused by anterior-posterior squeezing of the chest), bruising on the torso and ears (TEN-4 FACES rule: T=torso, E=ears in children <4 years is highly suspicious), a non-ambulatory infant, a history inconsistent with developmental stage ("fell from bed" in a non-mobile 9-month-old), and evidence of fractures at different stages of healing — this constellation is PATHOGNOMONIC for abusive head trauma. Per Nelson Textbook of Pediatrics and AAP Clinical Report, the MANDATORY management includes: (1) ADMISSION for child protection, (2) MANDATORY REPORTING to Child Protective Services (in India: Childline 1098, JJ Act 2015), (3) MULTIDISCIPLINARY CHILD PROTECTION TEAM involvement, and (4) NEUROIMAGING (non-contrast CT head ± MRI) to evaluate for intracranial injury. The child MUST NOT be discharged to the same environment without protective intervention, as the recurrence rate of reabuse is ~50%. ## Why each distractor is wrong - **Option 2**: Discharging the child after a metaphyseal corner fracture with posterior rib fractures, bruising on high-suspicion sites (torso, ears), and a discrepant history is DANGEROUS and violates the standard of care. This is a clear case of suspected NAT requiring protection and reporting. - **Option 3**: While coagulation studies and osteogenesis imperfecta testing are part of the differential diagnosis workup (to exclude bleeding disorders and OI), they should NOT delay or replace the immediate protective and reporting actions. The clinical picture — metaphyseal fracture + posterior ribs + TEN-4 bruising + non-ambulatory infant + discrepant history — is so specific for abuse that these tests are secondary confirmatory measures, not primary gatekeepers. - **Option 4**: Observing for 48 hours and delaying repeat skeletal survey is inappropriate. While a repeat skeletal survey in 2 weeks can detect occult fractures with new callus formation, the IMMEDIATE priority is protection, reporting, and neuroimaging to rule out life-threatening intracranial injury (retinal hemorrhages, subdural hematomas, parenchymal injury). **High-Yield:** Metaphyseal corner fractures + posterior rib fractures + TEN-4 bruising + non-ambulatory infant = MANDATORY ADMISSION, REPORTING, and NEUROIMAGING; do NOT discharge to the same caregiver. [cite: Nelson Textbook of Pediatrics 21e; AAP Clinical Report on Evaluation of Suspected Child Physical Abuse]