Collagen Dural Grafts for Traumatic Dural Defects

How traumatic dural tears differ from planned durotomies, when a graft is considered, and how DESU’s DECOLL and DURASHEET membranes fit trauma cases.

Dural defects after trauma are among the uses of both DESU collagen dural grafts, DECOLL and DURASHEET. A surgeon may consider one when a torn or damaged dura cannot be closed directly. For a focal traumatic defect, the practical choices are onlay or suturable handling, and which of the four sizes to open.

Key takeaways

• Dural defects after trauma are among the uses of both DECOLL and DURASHEET.
• A traumatic defect is unplanned, often with irregular edges, damaged tissue or missing dura.
• Both membranes can be used as an onlay; DURASHEET is also suturable and usable from either surface.
• Whether to graft, and with what, stays with the surgeon, particularly in a contaminated wound.

For the wider subject, see trauma craniotomy and decompressive craniectomy and dural grafts in neurotrauma, including expansive duraplasty. The focal defect left by a fracture or penetrating injury raises a narrower question: how a DESU dural graft can be handled, and which size to open. Clinical decisions belong to the surgeon and the instructions for use (IFU).

What is a traumatic dural defect?

A traumatic dural defect is a tear, or a loss of dura, caused by injury rather than by a surgical opening. Common settings include:

• Skull fractures, where bone edges or fragments lacerate the dura.
• Penetrating injuries, where an object or fragment passes through the dura.
• Skull base fractures, which can open a route for CSF leakage.
• Spinal fractures, where displaced bone can tear the dural sac.

In each case the defect may only be fully seen once the injury has been exposed, so its size and shape are often not known before the operation.

How does a traumatic defect differ from a surgical durotomy?

These differences explain why a trauma team may want more than one option available: the edges decide how the defect can be closed, and the condition of the dura may not be clear until the surgeon sees it.

When is a graft considered instead of direct closure?

If the torn edges can be brought together without tension, the surgeon may close the dura directly. A graft comes into consideration when dura is missing, when the remaining tissue is too damaged to hold, or when closing it would place it under tension. Autologous tissue, such as pericranium or fascia, is another option.

The choice is made case by case. No general rule decides it, and the graft’s role is to cover the defect as part of the whole closure.

How do cranial and spinal traumatic defects differ?

The setting changes the practical problem. At the cranial convexity, the surgeon usually has room to work around the defect. At the skull base, the defect may be hard to reach, and the repair is often built in layers. In spinal trauma, the dural sac is narrow and a tear on its front surface can be difficult to reach at all. Limited access is one reason a surgeon may favour an onlay over stitching, and the smaller space may call for a different size.

Which uses do DECOLL and DURASHEET cover?

DECOLL and DURASHEET have the same uses: dural defects after trauma, dural defects after spinal tumour surgery, meningocele, myelomeningocele and surgical dural defects associated with lipoma.

Technique, timing and the handling of a contaminated wound belong to the surgeon, and the current IFU should be read for any precautions.

DECOLL or DURASHEET for a traumatic defect?

The two membranes share pure Type I bovine collagen, a biodegradable structure, an impermeable pore structure and onlay application at different CSF pressure levels. They differ in what else they offer.

DECOLL fits a plan to lay the graft over the defect, and DURASHEET keeps both routes open. That can be useful when the condition of the edges is unknown until exposure, since the same sheet can be placed as an onlay or sutured according to what the surgeon finds.

Which sizes matter for traumatic defects?

Focal tears are the reason to keep smaller sizes on the emergency shelf, not only the largest ones often discussed for decompression. Because the extent of the defect is uncertain, it helps to have a choice of sizes available rather than a single one. Which sizes to hold depends on the hospital’s own case mix.

What do emergency teams need to know?

Trauma cases can arrive at any hour, with a team that does not use dural grafts every day. Three points belong in a short briefing:

• Both membranes are supplied ready to use, with no pre-processing before application.
• Both are gamma sterilised.
• The two products have different code prefixes: DCL for DECOLL and DRS for DURASHEET.

Talk to a DESU product specialist

For the IFU, or to plan which DECOLL and DURASHEET sizes to keep for trauma cases, write to sales@desu.tr, use the contact page, or request a quote.

Frequently asked questions

Does every traumatic dural tear need a graft?

No. Many tears can be closed directly if the edges come together without tension. A graft is one option the surgeon may consider when direct closure is not possible.

Can DECOLL or DURASHEET be used in a contaminated wound?

That is a clinical judgement for the surgeon, informed by the current instructions for use.

Are DESU dural grafts available in an antibiotic-impregnated version?

No. The antibiotic-impregnated option applies to catheters and shunts, not to DECOLL or DURASHEET.

Is the trauma use limited to the skull?

The use is “dural defects after trauma”, without separating cranial from spinal injuries. Check the IFU for your specific case, and raise any questions with a DESU product specialist.

Related standards

• ISO 22442 series: Medical devices utilizing animal tissues and their derivatives
• ISO 11137 series: Sterilization of health care products — Radiation
• ISO 10993 series: Biological evaluation of medical devices