What is a characteristic of nonabsorbable sutures?

Nonabsorbable sutures are designed to maintain their integrity in the body for an extended period, which is a key characteristic that highlights their purpose in surgical procedures. They do not degrade within the body, making them suitable for applications where long-term support or stability is needed.

The necessity for removal after healing is a defining feature of nonabsorbable sutures, as they remain intact and do not dissolve like absorbable sutures. This characteristic is crucial when sutures are used in areas where ongoing mechanical support is required even after the tissue has healed.

Other options presented do not accurately describe nonabsorbable sutures. While some may be made from natural materials, many are synthetic, and the classification does not limit them to being exclusively made from one type of material. Additionally, nonabsorbable sutures can be used both internally and externally depending on the specific clinical scenario and surgeon preference, which contradicts the notion that they are exclusively used for internal sutures. This helps clarify their versatility and the rationale behind their use in various surgical contexts.