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 %
- 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.