## Distinguishing Features of Incised Wounds **Key Point:** Incised wounds are clean-cut injuries produced by sharp instruments. The critical distinguishing feature is NOT the depth-to-length ratio, but rather the clean, sharp margins with minimal tissue bridging. ### Characteristics of Incised Wounds | Feature | Incised Wound | Laceration | |---------|---------------|------------| | Margins | Clean, sharp, well-defined | Irregular, jagged, bruised | | Tissue bridging | Minimal or absent | Present (nerves, vessels visible) | | Tissue loss | None | Variable | | Cause | Sharp instrument (knife, glass, blade) | Blunt force trauma | | Depth vs. Length | Variable (can be shallow or deep) | Usually wider than deep | **High-Yield:** The depth of an incised wound is NOT always greater than its length. This is a common misconception. An incised wound can be: - Deeper than it is long (e.g., a stab wound) - Longer than it is deep (e.g., a slash across the skin) - Equal in both dimensions The defining feature is the **sharpness of margins**, not the geometric ratio. ### Additional Forensic Features **Clinical Pearl:** Marginal abrasion (abraded edges) can occur in incised wounds when: - The instrument is slightly dulled - The instrument enters at an acute angle rather than perpendicular to the skin - There is a sawing motion during the cut This finding does NOT convert an incised wound into a laceration; it remains classified as an incised wound with marginal abrasion. **Key Point:** Incised wounds show no tissue loss and the wound edges can be precisely approximated without tension, which is useful in forensic reconstruction and surgical closure. [cite:Reddy Forensic Medicine 33e Ch 8]
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