Graftless Primary Dural Closure Following Retrosigmoid Approach: Doing More With less

Area of Science:

• Neurosurgery
• Surgical Techniques

Background:

• Postoperative cerebrospinal fluid (CSF) leaks are a significant complication following retrosigmoid approaches.
• Achieving watertight dural closure without grafts presents a surgical challenge.

Purpose of the Study:

• To describe and evaluate a novel dural incision technique for primary, no-graft watertight dural closure.
• To present clinical outcomes of this technique in patients undergoing retrosigmoid surgery.

Main Methods:

• Retrospective review of 227 patients undergoing the described dural incision technique.
• The technique involves a transverse incision parallel to the foramen magnum and a vertical linear opening of the retrosigmoid dura.
• Dural closure was performed using vicryl 4/0 running sutures without grafts or substitutes.

Main Results:

• Primary watertight dural closure was achieved in 100% of patients without grafts.
• Average dural closure time was 17.7 minutes.
• No instances of CSF leaks or meningitis were observed during an average follow-up of 49.3 months.

Conclusions:

• The described linear dural incision technique is effective for achieving no-graft, watertight dural closure in retrosigmoid approaches.
• This technique shows promise in preventing CSF leaks and meningitis.
• Further validation in a larger patient cohort is warranted.