Piano Key Sign

 Piano Key Sign

  • Piano Key Sign is used to test for:
    • Stability of the distal radioulnar joint (DRUJ)
    • Triangular fibrocartilage complex (TFCC)

  • Depressing the distal ulna from dorsal to volar with the hand pronated.

  • A positive result is characterized by painful laxity in the affected wrist compared with the contralateral wrist.
  • The results are usually positive in cases of DRUJ synovitis.

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