Performing a DXA PA Lumbar Spine, Proximal Femur, or Forearm DXA Study

  • Sydney Lou Bonnick
  • Lori Ann Lewis


The most commonly studied regions of the skeleton remain to be the PA lumbar spine, proximal femur, and forearm in spite of the development of software applications that allow measurement of virtually any skeletal region. The manufacturers of DXA devices provide instructions for patient positioning for the different types of DXA studies that can be performed utilizing their device and software applications. While the manufacturer’s recommendations for positioning should always be given priority, an understanding of why certain aspects of positioning are recommended is useful. In particular, the technologist who understands the goals of positioning is better able to modify certain aspects of positioning when the patient’s anatomy demands it, without undermining the validity of the study. In reviewing the basic procedures and nuances of positioning for the three major scan types, the following discussion provides both the basic “how to” as well as the more detailed “why.”


Femoral Neck Internal Rotation Proximal Femur Femoral Shaft Ulnar Styloid 
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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Sydney Lou Bonnick
    • 1
  • Lori Ann Lewis
    • 1
  1. 1.Clinical Research Center of North TexasDentonUSA

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