Which statement is true pertaining to the use of catgut sutures?

The statement that catgut sutures are absorbable is correct. Catgut is made from the natural fibers found in the intestines of sheep or goats, which allows it to be broken down by the body over time. This absorbable quality makes catgut suitable for use in surgical procedures where permanent sutures aren't necessary, as the sutures dissolve and are absorbed by the body's tissues, helping heal without needing to be removed afterward.

In contrast, catgut sutures do not incorporate synthetic materials, which aligns with the incorrectness of that statement. While catgut does provide a reasonable level of tensile strength, it can be less predictable compared to modern synthetic options, which often have specified strength parameters. The claim regarding low tissue vascularization tendencies is also inaccurate, as catgut sutures can encourage inflammation and tissue reaction, which might lead to increased vascularization and healing.

Thus, the characteristic of being absorbable is a defining feature of catgut sutures, validating the choice made.