Most specific but late Radiographic feature of Scurvy is
**Core Concept**
Scurvy is a disease caused by a deficiency of vitamin C (ascorbic acid) in the diet. It leads to impaired collagen synthesis, which affects various tissues, including bone, skin, and connective tissue. The disease manifests through a range of symptoms, including fatigue, malaise, and specific radiographic changes.
**Why the Correct Answer is Right**
The most specific radiographic feature of scurvy is the appearance of white line of Frankel, which is a dense band of new bone formation at the metaphysis of long bones. This occurs due to the impaired osteoid formation caused by vitamin C deficiency. The white line of Frankel is a late feature of scurvy, appearing after several weeks of severe vitamin C deficiency.
**Why Each Wrong Option is Incorrect**
* **Option A:** This feature is not specific to scurvy and can be seen in other conditions such as rickets or osteomalacia.
* **Option B:** This feature is more commonly associated with conditions such as osteogenesis imperfecta or osteoporosis.
* **Option C:** This feature is not a characteristic radiographic finding in scurvy.
**Clinical Pearl / High-Yield Fact**
The white line of Frankel is a classic radiographic feature of scurvy, but it is often seen in the context of other signs such as perifascicular atrophy and corkscrew hairs.
**Correct Answer: C. Trümmerfeld zone. Trümmerfeld zone is a radiographic feature seen in scurvy, representing an area of provisional calcification.**