A<unk> 's barb (ruler in cm). The barb is covered with rows of flat spines, composed of vasodentin. Vasodentin is an incredibly strong cartilaginous material which can easily cut through flesh. The undersides of the spines contain two longitudinal grooves which run along the length of the spine and enclose venom-secreting cells. Both the venom-secreting tissues and vasodentin are enveloped in an epidermis that tears open when the barb is plunged into a victim. Some spines may break off as the barb exits the wound and stay within the victim, causing prolonged envenomation.
Stingray injury
High pressure injection injury
Avulsion injury
Lisfranc injury
Dental avulsion
Suspension trauma
Coup contrecoup injury
Blast injury