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Magnetic resonance imaging evaluation of patients with idiopathic scoliosis: a prospective study of four hundred seventy-two outpatients.
Spine (Phila Pa 1976). 2011 Apr 01; 36(7):E482-5.S

Abstract

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.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Juntendo University, Tokyo, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Evaluation Study
Journal Article

Language

eng

PubMed ID

20479697

Citation

Nakahara, Daishi, et al. "Magnetic Resonance Imaging Evaluation of Patients With Idiopathic Scoliosis: a Prospective Study of Four Hundred Seventy-two Outpatients." Spine, vol. 36, no. 7, 2011, pp. E482-5.
Nakahara D, Yonezawa I, Kobanawa K, et al. Magnetic resonance imaging evaluation of patients with idiopathic scoliosis: a prospective study of four hundred seventy-two outpatients. Spine (Phila Pa 1976). 2011;36(7):E482-5.
Nakahara, D., Yonezawa, I., Kobanawa, K., Sakoda, J., Nojiri, H., Kamano, S., Okuda, T., & Kurosawa, H. (2011). Magnetic resonance imaging evaluation of patients with idiopathic scoliosis: a prospective study of four hundred seventy-two outpatients. Spine, 36(7), E482-5. https://doi.org/10.1097/BRS.0b013e3181e029ed
Nakahara D, et al. Magnetic Resonance Imaging Evaluation of Patients With Idiopathic Scoliosis: a Prospective Study of Four Hundred Seventy-two Outpatients. Spine (Phila Pa 1976). 2011 Apr 1;36(7):E482-5. PubMed PMID: 20479697.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Magnetic resonance imaging evaluation of patients with idiopathic scoliosis: a prospective study of four hundred seventy-two outpatients. AU - Nakahara,Daishi, AU - Yonezawa,Ikuho, AU - Kobanawa,Koji, AU - Sakoda,Junta, AU - Nojiri,Hidetoshi, AU - Kamano,Shunya, AU - Okuda,Takatoshi, AU - Kurosawa,Hisashi, PY - 2010/5/19/entrez PY - 2010/5/19/pubmed PY - 2012/2/15/medline SP - E482 EP - 5 JF - Spine JO - Spine (Phila Pa 1976) VL - 36 IS - 7 N2 - 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. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/20479697/Magnetic_resonance_imaging_evaluation_of_patients_with_idiopathic_scoliosis:_a_prospective_study_of_four_hundred_seventy_two_outpatients_ L2 - https://doi.org/10.1097/BRS.0b013e3181e029ed DB - PRIME DP - Unbound Medicine ER -