A one year old child presented with multiple fractures seen in various stages of healing. The most probable diagnosis in this case is
First, I remember that osteogenesis imperfecta is a genetic disorder causing brittle bones. But wait, in that case, the fractures would be present from birth or early infancy, but not necessarily in different healing stages. Also, the parents might have a family history. But the question doesn't mention that. Another possibility is child abuse, like non-accidental trauma. That's a big one because the fractures in various stages could indicate repeated injuries over time. The different healing stages suggest that the fractures happened at different times, which is a red flag for abuse.
Then there's rickets, which is a metabolic bone disease from vitamin D deficiency. That usually presents with bowing of legs and other deformities, not multiple fractures. Hypervitaminosis A could cause bone fragility, but that's rare. Also, the question doesn't mention any signs of vitamin deficiency or excess.
So the key here is the multiple fractures in different stages of healing. Child abuse is the most likely diagnosis here. The presence of fractures with varying healing phases is a classic sign of non-accidental trauma. The differential would include other conditions, but the clinical scenario points more towards abuse. The other options don't fit as well. Osteogenesis imperfecta is genetic, and rickets have different presentations. So the correct answer should be child abuse.
**Core Concept**
Non-accidental trauma (child abuse) is the leading cause of multiple fractures in various stages of healing in infants. Fractures in different healing phases indicate repeated injuries over time, which is suspicious for inflicted trauma. Osteogenesis imperfecta and rickets are alternative diagnoses but have distinct clinical features.
**Why the Correct Answer is Right**
Non-accidental trauma (NAT) causes fractures in infants due to shaking, twisting, or direct blows. Fractures in various stages of healing (e.g., callus formation with differing densities) suggest repeated episodes of injury, which is highly suspicious for abuse. NAT is the most probable diagnosis when fractures are inconsistent with accidental injury patterns.
**Why Each Wrong Option is Incorrect**
**Option A:** Osteogenesis imperfecta presents with congenital fractures and a family history of brittle bone disease. Fractures typically occur from minimal trauma and are not staged.
**Option B:** Rickets causes bowing of long bones and widened growth plates due to vitamin D deficiency, not multiple fractures in healing phases.
**Option C:** Hypervitaminosis A is rare and presents with hyperostosis and bone pain, not fractures in stages of healing.
**Clinical Pearl / High-Yield Fact**
Multiple fractures in different stages of healing in infants are a **classic red flag for child abuse**. Always consider non-accidental trauma in the differential, especially when fractures are inconsistent with the reported history of injury.
**Correct Answer: B. Non-accidental trauma**