Extensive abrasions are found on the body of a person lying by the road side. Most probable cause is: September 2005
**Core Concept**
The question is testing the ability to identify the most probable cause of extensive abrasions found on a person lying by the roadside, which involves understanding the mechanism of injury and potential causes of such trauma.
**Why the Correct Answer is Right**
The most probable cause of extensive abrasions found on a person lying by the roadside is likely due to a motor vehicle accident (MVA). This is because abrasions are typically caused by friction or rubbing of the skin against a rough surface, which is consistent with the scenario of being thrown or dragged by a moving vehicle. The force and speed of a vehicle can cause significant trauma, leading to extensive abrasions on the body.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely incorrect because it does not provide a plausible explanation for the extensive abrasions found on the person. While a fall from a height can cause trauma, it is less likely to result in extensive abrasions compared to an MVA.
* **Option B:** This option is incorrect because it does not take into account the specific context of the person being found by the roadside. While a dog bite can cause trauma, it is not the most probable cause of extensive abrasions in this scenario.
* **Option C:** This option is incorrect because it does not provide a clear explanation for the extensive abrasions found on the person. While a fight or altercation can cause trauma, it is less likely to result in extensive abrasions compared to an MVA.
**Clinical Pearl / High-Yield Fact**
When evaluating a patient with extensive abrasions, it is essential to consider the mechanism of injury and potential causes of trauma, including motor vehicle accidents. A thorough history and physical examination, including documentation of the patient's location and circumstances surrounding the injury, can help identify the most probable cause of the trauma.
**Correct Answer: C. Road traffic accident.**