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. 2015 Oct;9(5):721-7.
doi: 10.4184/asj.2015.9.5.721. Epub 2015 Sep 22.

Foramen Magnum Decompression and Duraplasty is Superior to Only Foramen Magnum Decompression in Chiari Malformation Type 1 Associated with Syringomyelia in Adults

Mehmet Sabri Gürbüz  1 , Mehmet Zafer Berkman  2 , Emre Ünal  3 , Elif Akpınar  4 , Şevki Gök  5 , Metin Orakdöğen  5 , Salih Aydın  1
Affiliations

Foramen Magnum Decompression and Duraplasty is Superior to Only Foramen Magnum Decompression in Chiari Malformation Type 1 Associated with Syringomyelia in Adults

Mehmet Sabri Gürbüz et al. Asian Spine J. 2015 Oct.

Abstract

Study design: Retrospective cohort study.

Purpose: To compare surgical results of foramen magnum decompression with and without duraplasty in Chiari malformation type 1 (CM-1) associated syringomyelia (SM).

Overview of literature: The optimal surgical treatment of CM-1 associated with SM is unclear.

Methods: Twenty-five cases of CM-1 with SM were included. There were 12 patients (48%) in the non-duraplasty group and 13 patients (52%) in the duraplasty group. The rate of improvement, state of postoperative SM size, amount of tonsillar herniation, preoperative symptom duration, complications and reoperation rates were analysed.

Results: The rate of clinical improvement was significantly higher with duraplasty (84.6%) than without (33.3%, p <0.05). The rate of postoperative syrinx regression was significantly higher in the duraplasty group (84.6%) than in the non-duraplasty group (33.3%, p <0.05). One case in the duraplasty group needed a reoperation compared with five cases in the non-duraplasty group (p =0.059).

Conclusions: Duraplasty is superior to non-duraplasty in CM-1 associated with SM despite a slightly higher complication rate.

Keywords: Chiari malformation type 1; Duraplasty; Foramen magnum decompression; Non-duraplasty; Syringomyelia.

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Conflict of interest statement

Conflict of Interest: No potential conflict of interest relevant to this article was reported.

Figures

Fig. 1
Fig. 1. The measurement of the ratio of the diameter of the syrinx (a) to the diameter of the vertebral canal (b) is seen on T2-weighted sagittal cervical magnetic resonance imaging scan.
Fig. 2
Fig. 2. Regression of the syrinx is seen in cervical sagittal magnetic resonance imaging scans taken in postoperative (A) first, (B) sixth, and (C) twelfth month of operation.
See this image and copyright information in PMC

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