**Core Concept**
A lacerated wound over a bony surface due to blunt trauma without excessive skin crushing is characterized by a specific type of tissue injury. The trauma causes the skin to split along the underlying bone, resulting in a wound with distinct features.

**Why the Correct Answer is Right**
In the case of a lacerated wound over a bony surface, the skin is split along the line of the underlying bone, resulting in a wound with regular sharp margins. This is because the bone provides a natural barrier that limits the extent of the wound, causing the skin to split cleanly along the bone's edge. The lack of excessive skin crushing also contributes to the formation of regular sharp margins.

**Why Each Wrong Option is Incorrect**
**Option A:** Irregular margins are typically seen in wounds caused by sharp objects, such as knives or glass, where the skin is torn in multiple directions.

**Option C:** Tearing is a characteristic of abrasions or avulsions, where the skin is forcibly pulled or rubbed away, resulting in a rough, irregular edge.

**Option D:** Flaying refers to the removal of skin, typically by a blunt object, resulting in a wound with a smooth, even surface but not regular sharp margins.

**Clinical Pearl / High-Yield Fact**
It is essential to note that the presence of regular sharp margins in a lacerated wound can be a strong indicator of blunt trauma to a bony surface, as opposed to sharp trauma or other types of injuries.

**✓ Correct Answer: B. Regular sharp margins**