Lumbarization of S1 vertebra

Case contributed by Mohammad Osama Hussein Yonso
Diagnosis certain

Presentation

History of back pain after lifting heavyweight. Physical Exam: conscious, oriented, cooperative, afebrile, paralumbar tenderness.

Patient Data

Age: 30 years
Gender: Male
x-ray
  • Both Sacro-iliac joints appear normal, partial lumbarization of S1  
  • Minimal lumbar scoliosis curvature to the right side at the AP view.
  • Mild straight lumbar spine 
  • I.V. disk spaces appear normal 
  • Mild spondylotic changes are seen in the lumbar spine
  • No compression fracture or wedging is seen.
  • No clear spondylolisthesis is seen. 

Case Discussion

Lumbarization of S1 is :

  • assimilation of S1 to the lumbar spine partially (unilateral) or completely (bilateral).
  • less common than sacralization, occurring in ~2% of the population 2
  • presence of six rib-free lumbar-type vertebrae

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.