Okay, let's tackle this question. The scenario is a one-year-old with multiple fractures in various healing stages. The key here is to figure out the most likely diagnosis. First, I need to recall the possible causes of multiple fractures in infants. The options might include conditions like osteogenesis imperfecta, child abuse (non-accidental trauma), rickets, or other metabolic bone diseases.

Osteogenesis imperfecta is a genetic disorder causing brittle bones. It can lead to fractures even with minimal trauma. However, in a one-year-old, the fractures might be present from birth or early infancy, but the presence of multiple fractures in various stages of healing might point more towards non-accidental injury.

Child abuse, specifically the "battered child syndrome," is a common cause of multiple fractures in different healing stages. The fractures could be in various stages because they occurred at different times. The metaphyseal corner fractures and rib fractures are classic signs of abuse.

Rickets is another possibility, but it usually presents with bowing of the legs, delayed walking, and muscle weakness rather than multiple fractures. Scurvy can cause similar issues but is less common now.

The key differentiator here is the pattern of fractures. If they're in different stages of healing, it suggests repeated trauma, which is more indicative of abuse. Osteogenesis imperfecta would have a family history and other features like blue sclerae.

So, the most probable diagnosis here is child abuse. The other options don't fit the clinical picture as well. The question is testing the ability to distinguish between different causes of fractures in infants, especially considering the healing stages.

**Core Concept**
This question assesses the differential diagnosis of multiple fractures in various healing stages in an infant, focusing on distinguishing between **non-accidental trauma (child abuse)** and **inborn errors of metabolism** like osteogenesis imperfecta. Key clinical features include the pattern of fractures and associated systemic findings.

**Why the Correct Answer is Right**
**Non-accidental trauma (child abuse)** is the most probable diagnosis due to the **presence of multiple fractures in different healing stages**, which implies repeated traumatic events. Classic signs include **metaphyseal corner fractures**, **rib fractures**, and **skull fractures**. These injuries are inconsistent with normal developmental milestones in a 1-year-old, who is unlikely to sustain such trauma accidentally. The absence of family history or systemic features (e.g., blue sclerae in osteogenesis imperfecta) further supports abuse as the cause.

**Why Each Wrong Option is Incorrect**
**Option A:** *Osteogenesis imperfecta* is autosomal dominant and presents with **frequent fractures**, **blue sclerae**, and **dental abnormalities**. However, fractures would typically occur in similar stages of healing due to inherent bone fragility, not varying stages.
**Option B:** *Rickets* causes **bony deformities** (e.g., bowing legs) and **delayed growth**, but not multiple fractures unless severe.
**Option C:** *Scurvy* (vitamin C deficiency) leads to **cork-screw hair shafts** and **perifemoral swelling**, not multiple fractures.

**Clinical Pearl / High-Yield Fact**
Remember the **"bucket handle" rib fractures** and **"corner" metaphyseal lesions** as path

✓ Correct Answer: C. Battered baby syndrome