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Surgical outcomes of foramen magnum decompression for syringomyelia associated with Chiari I malformation: relation between the location of the syrinx and body pain.
J Orthop Sci. 2010 May; 15(3):299-304.JO

Abstract

BACKGROUND

There have been few reports about the relation between the morphology of syrinxes and body pain in syringomyelia associated with Chiari I malformation. To investigate this phenomenon, the relation between the location of the syrinx and body pain before and after foramen magnum decompression (FMD) were evaluated.

METHODS

The subjects were 20 patients with Chiari I malformation associated with syringomyelia who underwent FMD. The morphology of the syrinxes was classified into three types - enlarged type, which was a distended syrinx at the central spinal cord; deviated type, which was a deviated syrinx posterolaterally within the spinal cord; central type, which was a small syrinx at the central canal of the spinal cord - based on axial magnetic resonance imaging (MRI). Preoperative and postoperative clinical symptoms and the body pain were evaluated by the Japanese Orthopaedic Association (JOA) score and a visual analogue scale (VAS) prospectively.

RESULTS

Preoperative and postoperative JOA scores showed no statistically significant differences between the three syrinx types. Intensity of body pain evaluated by the VAS showed that patients with a deviated-type syrinx on pre- and postoperative MRI tended to be associated with more intense pain than the other two types.

CONCLUSIONS

It was indicated that pain before and after surgery is more intense when the syrinx is deviated toward the spinal dorsal horn as seen on MRI.

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Authors+Show Affiliations

Ono A
Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
Numasawa T
No affiliation info available
Wada K
No affiliation info available
Yokoyama T
No affiliation info available
Takeuchi K
No affiliation info available
Suetsuna F
No affiliation info available
Ueyama K
No affiliation info available
Toh S
No affiliation info available

MeSH

AdultAgedArnold-Chiari MalformationCervical AtlasDecompression, SurgicalFemaleForamen MagnumHumansLaminectomyMagnetic Resonance ImagingMaleMiddle AgedPainPain MeasurementProspective StudiesSyringomyeliaYoung Adult

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20559796

Citation

Ono, Atsushi, et al. "Surgical Outcomes of Foramen Magnum Decompression for Syringomyelia Associated With Chiari I Malformation: Relation Between the Location of the Syrinx and Body Pain." Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association, vol. 15, no. 3, 2010, pp. 299-304.
Ono A, Numasawa T, Wada K, et al. Surgical outcomes of foramen magnum decompression for syringomyelia associated with Chiari I malformation: relation between the location of the syrinx and body pain. J Orthop Sci. 2010;15(3):299-304.
Ono, A., Numasawa, T., Wada, K., Yokoyama, T., Takeuchi, K., Suetsuna, F., Ueyama, K., & Toh, S. (2010). Surgical outcomes of foramen magnum decompression for syringomyelia associated with Chiari I malformation: relation between the location of the syrinx and body pain. Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association, 15(3), 299-304. https://doi.org/10.1007/s00776-010-1462-4
Ono A, et al. Surgical Outcomes of Foramen Magnum Decompression for Syringomyelia Associated With Chiari I Malformation: Relation Between the Location of the Syrinx and Body Pain. J Orthop Sci. 2010;15(3):299-304. PubMed PMID: 20559796.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surgical outcomes of foramen magnum decompression for syringomyelia associated with Chiari I malformation: relation between the location of the syrinx and body pain. AU - Ono,Atsushi, AU - Numasawa,Takuya, AU - Wada,Kanichiro, AU - Yokoyama,Toru, AU - Takeuchi,Kazunari, AU - Suetsuna,Futoshi, AU - Ueyama,Kazumasa, AU - Toh,Satoshi, Y1 - 2010/06/18/ PY - 2009/07/28/received PY - 2010/02/05/accepted PY - 2010/6/19/entrez PY - 2010/6/19/pubmed PY - 2010/10/6/medline SP - 299 EP - 304 JF - Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association JO - J Orthop Sci VL - 15 IS - 3 N2 - BACKGROUND: There have been few reports about the relation between the morphology of syrinxes and body pain in syringomyelia associated with Chiari I malformation. To investigate this phenomenon, the relation between the location of the syrinx and body pain before and after foramen magnum decompression (FMD) were evaluated. METHODS: The subjects were 20 patients with Chiari I malformation associated with syringomyelia who underwent FMD. The morphology of the syrinxes was classified into three types - enlarged type, which was a distended syrinx at the central spinal cord; deviated type, which was a deviated syrinx posterolaterally within the spinal cord; central type, which was a small syrinx at the central canal of the spinal cord - based on axial magnetic resonance imaging (MRI). Preoperative and postoperative clinical symptoms and the body pain were evaluated by the Japanese Orthopaedic Association (JOA) score and a visual analogue scale (VAS) prospectively. RESULTS: Preoperative and postoperative JOA scores showed no statistically significant differences between the three syrinx types. Intensity of body pain evaluated by the VAS showed that patients with a deviated-type syrinx on pre- and postoperative MRI tended to be associated with more intense pain than the other two types. CONCLUSIONS: It was indicated that pain before and after surgery is more intense when the syrinx is deviated toward the spinal dorsal horn as seen on MRI. SN - 1436-2023 UR - https://www.unboundmedicine.com/medline/citation/20559796/Surgical_outcomes_of_foramen_magnum_decompression_for_syringomyelia_associated_with_Chiari_I_malformation:_relation_between_the_location_of_the_syrinx_and_body_pain_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0949-2658(15)30962-3 DB - PRIME DP - Unbound Medicine ER -