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Monday 1 October 2012

Scaphoid Series



Ulnar deviation


  1. Seat the patient at the end of the table;
  2. Arm and forearm resting on the table;
  3. Wrist on the IP for a PA projection;
  4. Turn hand outward until the wrist is in extreme ulnar deviation.


Central ray perpendicular to the scaphoid bone.


Evaluation criteria:


  • No rotation of the wrist;
  • Scaphoid with adjacent articular areas open;
  • Extreme ulnar deviation.



PA Oblique Projection


  1. Seat the patient at the end of the table;
  2. Forearm resting on the table;
  3. Rest the palmar surface of the hand on the IP;
  4. From the pronated position, rotate the wrist until it forms an angle of approximately 60º.


Central ray perpendicular to the scaphoid bone.

Lateral Projection

The position it’s the same of lateral position of the wrist. See it in the wrist study.

  

Magnification PA Scaphoid View with Ulnar Deviation


  1. Identical do Ulnar deviation;
  2. Focus lies at a distance of 50cm from the table where the forearm is supported;
  3. Turn hand outward until the wrist is in extreme ulnar deviation;
  4. IP is under the table under a bank at a distance of 50 cm from the table and 1m to the focus.


Central ray perpendicular to the scaphoid bone.


Evaluation criteria:

  • Scaphoid centered and aligned with the center of collimation;
  • Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).


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