A laceration is a tear or jagged rupture of the soft tissues—usually skin and subcutaneous layers—caused by blunt trauma that crushes or shears rather than cleanly slices. Key characteristics are:
– Irregular, ragged wound edges often with crushed or contused tissue margins and “bridging” strands of subcutaneous fat or muscle.
– Variable depth: may involve only the dermis or extend through subcutis into muscle, nerves, vessels or even bone, making some lacerations “complex.”
– High likelihood of contamination with dirt, foreign bodies or devitalized tissue because of the tearing mechanism.
– Bleeding can range from minor oozing to significant hemorrhage if deeper structures are involved.

Unlike incised (clean‐cut) wounds, lacerations seldom have neatly opposed edges and heal poorly without proper debridement. Clinically they’re classified as:
• Simple lacerations (superficial, clean, low‐risk)
• Complicated lacerations (involving nerves, vessels, joints or bone)
• Contaminated or infected lacerations (embedded debris or devitalized tissue).

Management hinges on thorough irrigation, debridement of nonviable tissue, hemostasis, and then appropriate closure—primary, delayed primary or healing by secondary intention—depending on depth, contamination and location.