What is the role of absorptiometry in the workup of osteoporosis?

Updated: Jan 19, 2021
  • Author: Ali Nawaz Khan, MBBS, FRCS, FRCP, FRCR; Chief Editor: Felix S Chew, MD, MBA, MEd  more...
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Answer

Answer

Absorptiometry is a semiquantitative method of determining BMD. Radiographic absorptiometry is used for peripheral body sites with little overlying soft tissue, such as the hand. The extremity is radiographed simultaneously with an aluminum step wedge, and a densitometer is subsequently used to compare the density of the bones with that of the step wedge. Computer-assisted analysis of paired images obtained at slightly different exposures has yielded more accurate results.


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