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Magnetic resonance imaging evaluation of patients with idiopathic scoliosis: a prospective study of four hundred seventy-two outpatients.
MedLine Citation:
PMID:  20479697     Owner:  NLM     Status:  In-Data-Review    
STUDY DESIGN.: A prospective study of magnetic resonance imaging findings in outpatients with idiopathic scoliosis. OBJECTIVE.: The purpose of this study was to determine the prevalence of neural axis abnormalities in outpatients with scoliosis and to analyze the characteristics of patients who had such abnormalities. SUMMARY OF BACKGROUND DATA.: In previous studies, neural axis abnormalities were found in 2.9% to 37% of patients with idiopathic scoliosis. The current guidelines for MRI screening in scoliosis are valuable, and the proposed indications for performing MRI in the literature include early onset, atypical curvature, double thoracic curve (King type-5), rapid progression, male gender, and abnormal neurologic findings. METHODS.: A total of 472 outpatients with a primary diagnosis of idiopathic scoliosis were examined for neural axis abnormalities by magnetic resonance imaging. Logistic regression was used to determine significant predictors of neural axis abnormalities on MRI. RESULTS.: The incidence of neural axis abnormalities on MRI was 3.8% (18 of 472 patients). Among the 18 patients, 6 had a Chiari I malformation alone, 10 had a Chiari I malformation combined with syringomyelia, and 2 had a syringomyelia without Chiari I malformation. Male gender, patients younger than 11 years old, and abnormal superficial abdominal reflexes were significantly associated with the detection of neural axis abnormalities on MRI. CONCLUSION.: We recommend routine use of MRI in male patients, younger than 11 years old, and abnormal superficial abdominal reflexes. Even if a patient has no specific indications for MRI, we recommend its routine use in preoperative planning.
Daishi Nakahara; Ikuho Yonezawa; Koji Kobanawa; Junta Sakoda; Hidetoshi Nojiri; Shunya Kamano; Takatoshi Okuda; Hisashi Kurosawa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Spine     Volume:  36     ISSN:  1528-1159     ISO Abbreviation:  Spine     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-03-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E482-5     Citation Subset:  IM    
*Department of Orthopaedic Surgery, Juntendo University, Tokyo, Japan †Department of Orthopaedic Surgery, Kyoundo Hospital, Tokyo, Japan.
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