Chop wounds
- Finding
Chop wounds are made by heavy edged objects such as machetes or axes; they cut and crush at the same time and often injure bone.
What it is
A chop wound (herida cortocontundente) is made by an object with an edge and real weight, swung with force: machete, axe, cleaver. It combines features of an incised wound (cut edges) and of a laceration (bruised, crushed edges), and often cuts or fractures the underlying bone. In Colombia the machete is a common work tool, so these wounds are seen both in assaults and in work accidents. They are traditionally regarded as a sign of assault, but exceptions have been described.
How to tell it apart
- Versus an incised wound: a chop wound has bruised edges and usually reaches bone.
- Versus a laceration: it has cut edges and no tissue bridges in the cut part.
- Self-infliction of this kind of wound is rare; cases with unusual mechanisms have been described.
- The bone injury can help link the wound to the weapon.
How to recognise it
- A wide, deep wound with fairly clean edges plus bruising or abrasion.
- Bone injury: a cut, splinter, notch or comminuted fracture.
- It can amputate fingers or parts of limbs.
- Defence injuries on the hands and forearms.
How it forms
- The heavy blade is swung in an arc with high energy.
- The edge cuts the skin; the mass crushes the edges and drives through to the bone.
- A blunt edge gives more crushing than cutting features.
Step by step
- Number, measure and locate each wound against anatomical landmarks.
- Describe the edges (cut, bruised), depth and structures injured.
- Document the bone injury with imaging.
- Examine the hands and forearms (defence injuries).
- Keep fragments and foreign bodies with chain of custody.
Next step: what to do and document
- Put bleeding control and limb viability first; document afterwards without delay.
- Describe each wound and the bone injury in the record and the operative note.
- Keep clothing, fragments and any object handed in with chain of custody.
- Record the account (assault or work accident) in the patient's own words and follow the reporting pathway where it applies.
Common mistakes
- Classifying it as an incised wound and leaving out the crushing and bone components.
- Assuming the manner from the type of wound alone.
- Not documenting defence injuries on the hands and forearms.
Test yourself
Think of the answer, then tap the question to see it.
Which objects cause chop wounds?
Objects with an edge and weight swung with force, such as machetes, axes or cleavers.
Which features does a chop wound combine?
Cut edges as in an incised wound and bruising or crushing as in a laceration, often with bone injury.
Does a chop wound always prove an assault?
No. It is usually from assault, but accidents and rare self-inflicted cases occur; the manner is established on all the evidence.
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Connections
Educational content on forensic and legal medicine; not legal advice and no substitute for the technical guides of Colombia's National Institute of Legal Medicine and Forensic Sciences. Laws change: each page links the official text and says when it was last checked. For a real case, follow the guide in force and ask the competent authority.
Sources: Fatal Self-Inflicted Chop Wound by a Supari Cutter (Sudi): A Rare Case With Forensic Analysis of Wound Patterns and Weapon Biomechanics (Cureus (PMC), 2026); Pattern and Forensic Significance of Defense Injuries in Homicide Cases: A Cross-Sectional Study (Cureus (PMC), 2025).
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