Tetanus is most likely to occur with which type of wound?

• A. Laceration
• B. Abrasion
• C. Puncture
• D. Avulsion

Answer: (C)

Tetanus risk rises when a wound provides a deep, poorly oxygenated environment where Clostridium tetani can grow and produce toxin. A puncture wound does just that: it creates a narrow, deep track that often stays dirty and becomes relatively sealed, with limited airflow and blood supply. This anaerobic pocket is ideal for the spores to germinate and release tetanus toxin, making puncture wounds the type most likely to lead to tetanus.

In contrast, lacerations and abrasions are typically more superficial and open to air, while avulsions, though serious, don’t inherently create the same deep, oxygen-poor space that promotes toxin production. Preventing tetanus involves proper wound cleaning and considering vaccination or immune support based on vaccination history.