Which of the following skull fractures is called a ‘Motorcyclist’s fracture’
**Core Concept**
A 'Motorcyclist's fracture' refers to a specific type of depressed skull fracture, often resulting from high-impact trauma such as a motor vehicle accident. It is characterized by a depressed fracture of the temporal bone, typically involving the squamous part.
**Why the Correct Answer is Right**
The 'Motorcyclist's fracture' is specifically related to the temporal bone due to its proximity to the temporalis muscle, which is attached to the temporal bone. When a motorcyclist's head strikes the ground, the temporalis muscle contracts, pulling the temporal bone into the fracture, resulting in a depressed fracture. This type of fracture is often associated with a basal skull fracture and can be life-threatening if not promptly treated.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it doesn't specifically refer to the temporal bone or the characteristic mechanism of injury associated with a 'Motorcyclist's fracture'.
**Option B:** This option is incorrect because it refers to a different type of fracture, often involving the parietal bone, and is not associated with the same mechanism of injury.
**Option C:** This option is incorrect because it is a general term for a type of skull fracture and does not specifically refer to the temporal bone or the characteristic mechanism of injury associated with a 'Motorcyclist's fracture'.
**Clinical Pearl / High-Yield Fact**
In cases of suspected basal skull fracture, it's essential to look for signs of a 'Motorcyclist's fracture', such as a depressed fracture of the temporal bone, and to promptly treat the patient to prevent further complications.
**Correct Answer:** C.