"A Revolutionary way to treat TFCC tears"

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Viewing posts tagged TFCC Piano Key Sign.

The Piano Key Sign- Understanding compression of the ulna head

I often receive emails from patients with TFCC tears who report wrist splinting (normal wrist extension/cock up) makes their wrist hurt more than without the splinting.  The Piano Key Sign is a common test performed by physicians as a part of the clinical assessment of the wrist.  Simply described, imagine the ulna head as a piano key.  The examiner would press on the ulna head and if painful, would indicate a positive Piano Key Sign.  A stable wrist would cause the ulna head to spring back like a piano key without pain.  You can read all about the test all over medical text books as an indicator of a TFCC tear or DRUJ (distal radial ulna joint) instability.