Measurement of spinal canal narrowing, interpedicular widening, and vertebral compression in spinal burst fractures: plain radiographs versus multidetector computed tomography

• Published in: Skeletal radiology 2009-09, Vol.38 (9), p.887-893
• Main Authors: Bensch, Frank V., Koivikko, Mika P., Kiuru, Martti J., Koskinen, Seppo K.
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Aged; Biological and medical sciences; Digestive system; Female; Fractures, Compression - diagnostic imaging; Humans; Imaging; Injuries of the limb. Injuries of the spine; Investigative techniques, diagnostic techniques (general aspects); Male; Medical sciences; Medicine & Public Health; Middle Aged; Nuclear Medicine; Orthopedics; Osteoarticular system. Muscles; Pathology; Radiodiagnosis. Nmr imagery. Nmr spectrometry; Radiology; Reproducibility of Results; Scientific Article; Sensitivity and Specificity; Spinal Fractures - diagnostic imaging; Spinal Stenosis - diagnostic imaging; Spine - diagnostic imaging; Tomography, X-Ray Computed; Traumas. Diseases due to physical agents; X-Ray Film; Young Adult
• ISSN: 0364-2348; 1432-2161
• DOI: 10.1007/s00256-009-0702-1

Objective To assess the reliability of measurements of spinal canal narrowing, vertebral body compression, and interpedicular widening in burst fractures in radiography compared with multidetector computed tomography (MDCT). Materials and methods Patients who had confirmed acute vertebral burst fractures over an interval of 34 months underwent both MDCT and radiography. Measurements of spinal canal narrowing, vertebral body compression, and interpedicular widening from MDCT and radiography were compared. Results The 108 patients (30 female, 78 male, aged 16–79 years, mean 39 years) had 121 burst fractures. Eleven patients had multiple fractures, of which seven were not contiguous. Measurements showed a strong positive correlation between radiography and MDCT (Spearman’s rank sum test: spinal canal narrowing k = 0.50–0.82, vertebral compression k = 0.55–0.72, and interpedicular widening k = 0.81–0.91, all P   0.25) and for interpedicular widening in the thoracic spine (k = 0.35, P  = 0.115). The average difference in measurements between the modalities was 3 mm or fewer. Conclusion Radiography demonstrates interpedicular widening, spinal canal narrowing and vertebral compression with acceptable precision, with the exception of those of the cervical spine.