How long should Surgifoam® (porcine gelatin sponge) be left in place?

How Long to Leave Surgifoam In

Surgifoam® (absorbable gelatin sponge) is designed to be left in place and does not require removal—it is biocompatible and fully resorbs within approximately 2 weeks. 1

Key Principles

The fundamental characteristic of Surgifoam is that it is an absorbable hemostatic agent that naturally degrades and is eliminated by the body. Unlike non-absorbable materials that must be removed, gelatin sponges are specifically designed to remain in situ after achieving hemostasis.

Resorption Timeline

• Complete resorption occurs within 2 weeks in most clinical scenarios 1
• The sponge maintains structural integrity initially but gradually dissolves as the body absorbs it
• No surgical removal is necessary once hemostasis is achieved

Clinical Context Matters

When to Remove vs. Leave in Place

For spinal surgery specifically: Large pieces of absorbable gelatin sponge should be removed once hemostatic control is achieved. If the sponge is to be left in place, use only small, soaked pieces to avoid spinal cord compression from expansion within enclosed spaces 2. This is critical because gelatin sponges can expand osmotically and cause neurological deficits when left in confined anatomical spaces.

For general surgical use: The sponge can be left in place after hemostasis is achieved 3. It functions as both a hemostatic agent and temporary scaffolding.

For middle ear surgery: Standard-density gelatin sponges maintain better structural integrity over time compared to low-density variants, with approximately 34.6% volume loss at 5 days 4. This is relevant when the sponge serves as scaffolding for reconstruction.

Important Caveats

• Enclosed spaces with neural tissue: Exercise extreme caution. The sponge's osmotic expansion can compress the spinal cord or nerves 2
• Amount matters: Use the minimum effective amount needed for hemostasis
• Preparation: Soak the sponge before placement to reduce expansion potential if leaving in confined spaces
• Monitor closely: In the immediate postoperative period (24-48 hours), watch for signs of compression if used near neural structures

Practical Application

1. Achieve hemostasis with the gelatin sponge
2. In open surgical fields: Leave the sponge in place—it will resorb naturally
3. In confined spaces (spine, skull base): Remove large pieces once bleeding stops; only leave small, well-soaked pieces if necessary
4. No routine follow-up removal is needed—the material is fully absorbable

The gelatin sponge has been used safely in neurosurgical and intraspinal procedures for over 30 years when applied appropriately 3.