ORIGINAL RESEARCH

Using different duraplasty variants in the treatment of patients with Chiari Malformation Type I

Kakhkharov RA1, Flegontov AN1, Mokhov NV1,2
About authors

1 Department of Neurology and Neurosurgery, Faculty of Advanced Training and Professional Retraining,
Kazan State Medical University, Kazan, Russia

2 Interregional Clinical Diagnostic Center, Kazan, Russia

Correspondence should be addressed: Ruslan Kakhkharov
ul. Karbysheva, d. 12a, Kazan, Russia, 420097; ur.liam@vorahhak.nalsur

About paper

Acknowledgements: authors thank professor Valery Danilov from Kazan State Medical University for his help in preparing the manuscript.

Received: 2016-06-10 Accepted: 2016-08-01 Published online: 2017-01-05
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Fig. 1. A T1-weighted sagittal MRI scan, from a patient with Chiari malformation, cerebellar tonsillar prolapse
Fig. 2. A T1-weighted sagittal MRI scan. Syringomyelia — disorder often associated with Chiari malformation
Fig. 3. A sagittal CT scan. Pseudomeningocele (marked by arrow) — one of the post-op complications from Chiari malformation surgery
Fig. 4. Reference points of the posterior fossa used in diagnosis of Chiari malformation (Sekula et al., 2005 [21])
d + e — length of clivus; S — sphenooccipital synchondrosis; d — length of basisphenoid between the top of the dorsum sellae and the sphenooccipital synchondrosis of the clivus; e — length of the basiocciput between the synchondrosis and the basion; b — length of the hindbrain between the midbrain- pons junction and the medullocervical junction; a — angle of the cerebellar tentorium to Twining's line; c — length of cerebellar hemispheres; DS — top of the dorsum sellae; IOP — internal occipital protuberance; OP — opisthion; IOP to OP — length of supraocciput; B — basion; TW — Twining's line; McR (B to OP) — McRae's line.
Fig. 5. Incidence of syndromes in Chiari malformationМС — мозжечковый синдром
CS — cerebellar syndrome; HHS — hypertension-hydrocephalic syndrome; SMS — syringomyelic syndrome; RS — radicular syndrome; BS — bulbar syndrome; VIS — vertebrobasilar insufficiency syndrome.
Fig. 6. Duration of neurological syndrome regression under different types of surgery
Types of Chiari malformations