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Skeletal Radiology

, Volume 17, Issue 8, pp 570–575 | Cite as

Stress views in the comparative assessment of spondylolytic spondylolisthesis

  • Peter Kälebo
  • Raynald Kadziolka
  • Leif Swärd
  • Bengt E. Zachrisson
Articles

Abstract

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.

Key words

Lumbar spine Spondylolisthesis Segmental instability Stress radiography Error analysis 

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Copyright information

© International Skeletal Society 1989

Authors and Affiliations

  • Peter Kälebo
    • 1
    • 3
  • Raynald Kadziolka
    • 2
  • Leif Swärd
    • 2
  • Bengt E. Zachrisson
    • 1
  1. 1.Department of Diagnostic RadiologyEast HospitalGöteborg
  2. 2.Department of Orthopaedic SurgeryEast HospitalGöteborg
  3. 3.Biomaterials Group, Department of Handicap ResearchUniversity of GöteborgGöteborgSweden

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