Question

Regarding polydioxanone suture material, which of the following is accurate?

• A. Non-absorbable
• B. Monofilament
• C. Braided multifilament
• D. Derived from collagen

Hint:

PDS or polydioxanone = synthetic absorbable monofilament suture.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
Polydioxanone (commonly known by the trade name PDS) is a widely used synthetic suture material. The question tests knowledge of its physical and biological properties.
Step 2: Detailed Explanation:

Synthetic Absorbable: PDS is a synthetic polymer. Unlike Catgut (which is derived from collagen), PDS is absorbable via hydrolysis rather than enzymatic degradation (Option A is false).

Monofilament Structure: It is a monofilament suture. This means it consists of a single strand, which results in a smooth surface that causes minimal tissue trauma and has a low risk of harboring bacteria compared to braided sutures (Option C is false).

Absorption Profile: PDS is unique because it provides prolonged wound support. It retains about 50% of its tensile strength at 4 weeks and is completely absorbed by 180-210 days.

Clinical Use: Because of its long-lasting strength and monofilament nature, it is the preferred suture for abdominal wall (fascia) closure, where it reduces the risk of incisional hernia and surgical site infection.

Multifilament examples: Braided sutures include Vicryl (Polyglactin) and Silk.

Step 3: Final Answer:
Polydioxanone (PDS) is a synthetic, absorbable, monofilament suture material.