Stress views in the comparative assessment of spondylolytic spondylolisthesis

Patients with spondylolytic spondylolisthesis were examined in six different positions to detect segmental instability. The amount of displacement was determined on lateral spot radiographs, taken in recumbent, standing, flexion, extension, axial compression, and traction positions in each patient....

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Bibliographic Details
Published in:Skeletal radiology 1989, Vol.17 (8), p.570-575
Main Authors: KALEBO, P. L, KAEZIOLKA, R, SWARD, L, ZACHRISSON, B. E
Format: Article
Language:English
Subjects:
Biological and medical sciences
Diseases of the osteoarticular system
Diseases of the spine
Humans
Lumbar Vertebrae - diagnostic imaging
Medical sciences
Methods
Posture
Radiography
Sacrum - diagnostic imaging
Spine - diagnostic imaging
Spondylolisthesis - diagnostic imaging
Stress, Mechanical
Traction
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Summary:Patients with spondylolytic spondylolisthesis were examined in six different positions to detect segmental instability. The amount of displacement was determined on lateral spot radiographs, taken in recumbent, standing, flexion, extension, axial compression, and traction positions in each patient. An error analysis was also performed. Examination in axial compression-traction was found to be a significantly better method for detection of segmental instability compared with standing-recumbent, or flexion-extension radiographs. In addition, the compression-traction method exhibited a higher sensitivity for identification of instability (73%) than standing-recumbent (33%) or flexion-extension (20%) views. The total error in the determination was small, +/- 2.5% (95% CL), providing a careful and controlled technique was used.
ISSN:0364-2348
1432-2161
DOI:10.1007/bf02569403