Lunotriquetral Ballottement Test

 Lunotriquetral Ballottement Test

What is Lunotriquetral Ballottement Test?

  • Lunotriquetral Ballottement Test also called Reagan Test, it is used to evaluate the integrity of the lunotriquetral ligament of the wrist joint.

How it's Performed?

  • The examiner grasps the lunate between the thumb and forefinger with one hand and the triquetrum between the fingers of the other hand.
  • With the triquetrum flexed, the examiner then moves the lunate back and forth several times in a dorsopalmar direction.

What does a positive Lunotriquetral Ballottement Test mean?

  • Lunotriquetral Ballottement Test is positive when there are increased laxity and accompanying pain at the Lunotriquetral joint region.

Sensitivity & Specificity

  • Sensitivity: 64 %
  • Specificity: 44 %

Notes

  • Lunotriquetral instability can result from trauma involving hyperpronation or hyperextension.
  • Patients report pain in the wrist. Tenderness to palpation over the triquetrolunate joint and pain with motion can be provoked, but pronation and supination do not cause any pain.
  • The injury does not necessarily involve loss of strength. Patients occasionally describe the instability as a clicking that occurs during wrist motion.

Reference




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