Premature synostosis of corona! sutures along with basal sutures shows which of the following features:
**Core Concept**
Premature synostosis of coronal sutures along with basal sutures refers to the early fusion of these cranial sutures, leading to a condition known as craniosynostosis. This condition results in abnormal skull development and shape, often accompanied by increased intracranial pressure.
**Why the Correct Answer is Right**
The premature fusion of coronal and basal sutures leads to a condition characterized by a short, broad skull with a prominent forehead and a small posterior fossa. This is due to the restricted growth of the skull in the coronal and basal planes, resulting in a compensatory expansion of the skull in the sagittal plane. The increased intracranial pressure can lead to visual disturbances, headaches, and other neurological symptoms.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as synostosis of the coronal and basal sutures does not typically result in a long, narrow skull.
**Option B:** This option is incorrect as the condition is not primarily associated with an increase in cranial index.
**Option C:** This option is incorrect as the condition is not typically associated with a high forehead and a prominent occipital bone.
**Clinical Pearl / High-Yield Fact**
Craniosynostosis can be associated with other syndromes and genetic disorders, and early diagnosis and treatment are crucial to prevent long-term complications.
**Correct Answer:** D. A short, broad skull with a prominent forehead.