Collagen matrix as an inlay in endoscopic skull base reconstruction

Area of Science:

• Neurosurgery
• Otolaryngology
• Biomaterials

Background:

• Multi-layer reconstruction is standard in endoscopic skull base surgery.
• Inlay materials vary, including autografts, allografts, xenografts, and synthetics.
• Collagen matrix is one such inlay material with described outcomes.

Purpose of the Study:

• To describe the short- and long-term outcomes of using collagen matrix in skull base reconstruction.
• To assess the efficacy and safety of collagen matrix as an inlay material.

Main Methods:

• A case series of 120 patients undergoing endoscopic skull base reconstruction with collagen matrix inlay.
• Assessment of immediate peri-operative outcomes including cerebrospinal fluid leak, meningitis, and intracranial bleeding.
• Evaluation of delayed complications such as meningoencephalocele and delayed cerebrospinal fluid leak.

Main Results:

• Peri-operative complications occurred in 12.7% of patients, with cerebrospinal fluid leak and meningitis each at 3.3%.
• Intracranial bleeding and epistaxis were observed in 1.7% of patients; seizures occurred in 0%.
• No delayed complications were reported in any patients.

Conclusions:

• Collagen matrix is an effective inlay material for skull base reconstruction.
• It provides robust long-term separation between sinus and cranial cavities.
• The material avoids donor site morbidity but incurs additional costs.