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Changes in spino-pelvic alignment after surgical treatment of isthmic spondylolisthesis
Affiliations- department of neurosurgery
- Centre for Innovative Research in Medical and Natural Sciences, Faculty of Medicine, University of Rzeszow, Warzywna 1a, 35-959 Rzeszow, Poland
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Abstract
To analyze the changes in spino-pelvic parameters after surgical treatment of lumbar isthmic spondylolisthesis.
Materials and methodsSixty patients recruited from a group of consecutive series of 128 cases with isthmic spondylolisthesis operated on between 2002 and 2012 in the Department of Neurosurgery, Tarnow, Poland. All patients were operated on by the same surgeon (the first author). Spino-pelvic parameters: PI, SS, PT, LSA, and LL were measured manually on standing lateral view radiograms. Patients were divided according to Spinal Deformity Study Group classification which we modified for means of analysis: (A) low-grade group: subgroups with balanced pelvis and unbalanced pelvis (instead of normal and high PI subgroups), (B) high-grade group: subgroups with balanced and unbalanced pelvis.
ResultsTwenty-nine patients had unbalanced pelvis before the operation. In 10 of them (34%), the procedure resulted in full correction of pelvis position meaning that they achieved balanced pelvis after the surgery. There were 6 patients with low-grade slip who had balanced pelvis preoperatively but showed unbalanced pelvis after the surgery but this loss of balanced pelvis did not affect the clinical outcome which overall was good among them. Patients with unbalanced pelvis presented changes towards restoration of spino-sacro-pelvic anatomy postoperatively: PT decreased while SS increased, although these changes were not statistically significant.
ConclusionFurther studies are needed to confirm whether surgical correction of spino-pelvic parameters results in better clinical outcome in patients with isthmic spondylolisthesis.
Abstract
To analyze the changes in spino-pelvic parameters after surgical treatment of lumbar isthmic spondylolisthesis.
Materials and methodsSixty patients recruited from a group of consecutive series of 128 cases with isthmic spondylolisthesis operated on between 2002 and 2012 in the Department of Neurosurgery, Tarnow, Poland. All patients were operated on by the same surgeon (the first author). Spino-pelvic parameters: PI, SS, PT, LSA, and LL were measured manually on standing lateral view radiograms. Patients were divided according to Spinal Deformity Study Group classification which we modified for means of analysis: (A) low-grade group: subgroups with balanced pelvis and unbalanced pelvis (instead of normal and high PI subgroups), (B) high-grade group: subgroups with balanced and unbalanced pelvis.
ResultsTwenty-nine patients had unbalanced pelvis before the operation. In 10 of them (34%), the procedure resulted in full correction of pelvis position meaning that they achieved balanced pelvis after the surgery. There were 6 patients with low-grade slip who had balanced pelvis preoperatively but showed unbalanced pelvis after the surgery but this loss of balanced pelvis did not affect the clinical outcome which overall was good among them. Patients with unbalanced pelvis presented changes towards restoration of spino-sacro-pelvic anatomy postoperatively: PT decreased while SS increased, although these changes were not statistically significant.
ConclusionFurther studies are needed to confirm whether surgical correction of spino-pelvic parameters results in better clinical outcome in patients with isthmic spondylolisthesis.
Keywords
Isthmic spondylolisthesis, Spino-pelvic balance, Sacro-pelvic parameters
About this articleTitle
Changes in spino-pelvic alignment after surgical treatment of isthmic spondylolisthesis
Journal
Neurologia i Neurochirurgia Polska
Issue
Pages
21-29
Page views
468
Article views/downloads
678
DOI
10.1016/j.pjnns.2013.05.001
Bibliographic record
Neurol Neurochir Pol 2014;48(1):21-29.
Keywords
Isthmic spondylolisthesis
Spino-pelvic balance
Sacro-pelvic parameters
Authors
Andrzej Maciejczak
Katarzyna Jabłońska
Danuta Bączek
Piotr Barnaś
Marcin Czternastek
Piotr Dudziak
Filip Georgiew
Barbara Jagiełło-Bajer
Bogdan Litwora
Piotr Maślanka
Robert Konior
Janusz Orzech
