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Bullet fragmentation: a major cause of tissue disruption
The Journal of Trauma
|January 1, 1984
Summary
This study compared fragmenting and nonfragmenting bullets in swine tissue. Fragmenting bullets caused significantly more tissue disruption and lost substantial weight, unlike nonfragmenting bullets.
Area of Science:
- Forensic Ballistics
- Trauma Surgery
- Biomedical Engineering
Background:
- Understanding projectile behavior in tissue is crucial for treating gunshot wounds.
- Different bullet designs, such as fragmenting and nonfragmenting types, have distinct effects on biological tissue.
Purpose of the Study:
- To compare the tissue disruption caused by fragmenting soft-point bullets versus nonfragmenting solid brass bullets.
- To evaluate the weight loss of different bullet types after impact with soft tissue.
Main Methods:
- Five swine were used, with each hind leg shot by a different bullet type (fragmenting vs. nonfragmenting) at a range of 3 meters.
- Bullet velocities ranged from 930 to 990 m/s.
- Tissue disruption was assessed through dissection, and recovered bullets were weighed.
Main Results:
- Fragmenting bullets caused significantly greater tissue disruption (p < 0.001) compared to nonfragmenting bullets.
- Fragmenting bullets lost 59-77% of their original weight, while nonfragmenting bullets retained their original weight.
- Bullet fragments were identified in wounds from fragmenting bullets.
Conclusions:
- Fragmenting bullets induce more extensive tissue damage than nonfragmenting bullets.
- The degree of tissue disruption and presence of fragments can guide surgical treatment of gunshot injuries.
- This research provides valuable insights for trauma surgeons managing ballistic injuries.