J Korean Neurosurg Soc.  2016 Jan;59(1):52-57. 10.3340/jkns.2016.59.1.52.

Evaluation of Non-Watertight Dural Reconstruction with Collagen Matrix Onlay Graft in Posterior Fossa Surgery

• Kshettry V
• Lobo B
• Lim J
• Sade B
• Oya S
• Lee JH

• KMID: 2152918
• DOI: http://doi.org/10.3340/jkns.2016.59.1.52

Abstract

OBJECTIVE
Many surgeons advocate for watertight dural reconstruction after posterior fossa surgery given the significant risk of cerebrospinal fluid (CSF) leak. Little evidence exists for posterior fossa dural reconstruction utilizing monolayer collagen matrix onlay graft in a non-watertight fashion. Our objective was to report the results of using collagen matrix in a non-watertight fashion for posterior fossa dural reconstruction.
METHODS
We conducted a retrospective review of operations performed by the senior author from 2004-2011 identified collagen matrix (DuraGen) use in 84 posterior fossa operations. Wound complications such as CSF leak, infection, pseudomeningocele, and aseptic meningitis were noted. Fisher's exact test was performed to assess risk factor association with specific complications.
RESULTS
Incisional CSF leak rate was 8.3% and non-incisional CSF leak rate was 3.6%. Incidence of aseptic meningitis was 7.1% and all cases resolved with steroids alone. Incidence of palpable and symptomatic pseudomeningocele in follow-up was 10.7% and 3.6% respectively. Postoperative infection rate was 4.8%. Previous surgery was associated with pseudomeningocele development (p<0.05).
CONCLUSION
When primary dural closure after posterior fossa surgery is undesirable or not feasible, non-watertight dural reconstruction with collagen matrix resulted in incisional CSF leak in 8.3%. Incidence of pseudomeningocele, aseptic meningitis, and wound infection were within acceptable range. Data from this study may be used to compare alternative methods of dural reconstruction in posterior fossa surgery.

Keyword

Posterior fossa; Cerebrospinal fluid leak; Duraplasty; Dural reconstruction; Collagen matrix; Pseudomeningocele

MeSH Terms

Cerebrospinal Fluid
Collagen*
Follow-Up Studies
Incidence
Inlays*
Meningitis, Aseptic
Retrospective Studies
Risk Factors
Steroids
Transplants*
Wound Infection
Wounds and Injuries
Collagen
Steroids

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