All are seen are features of osteogenesis imperfecta except –
**Core Concept**
Osteogenesis imperfecta is a genetic disorder characterized by fragile bones, skeletal deformities, and various extrasekeletal features. It is caused by mutations in the genes encoding for type I collagen, which is a crucial component of bone matrix.
**Why the Correct Answer is Right**
The correct answer is related to the characteristics of osteogenesis imperfecta. This condition is known for its features such as blue sclerae, hearing loss, and dental abnormalities, among others. The blue sclerae are caused by the transparency of the collagen in the sclera, allowing the underlying blood vessels to be visible.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not a feature of osteogenesis imperfecta. Instead, it might be related to another genetic disorder or a different condition altogether.
**Option B:** This option might be a feature of osteogenesis imperfecta, but it's not the correct answer since we're looking for an exception.
**Option C:** This option is also a feature of osteogenesis imperfecta, making it incorrect as the correct answer.
**Clinical Pearl / High-Yield Fact**
A classic exam trap in osteogenesis imperfecta is its association with dentinogenesis imperfecta, which affects the teeth and can be seen as a discolored, brittle, or missing teeth.
**Correct Answer:** Not provided in the question. Please provide the options.