What does a piano key sign test for?

wrist instability
Purpose. The Piano-Key Sign Test is a test carried out for the clinical assessment of wrist instability. It is used as an indicator for distal radio-ulnar joint instability and tears of the triangular fibrocartilage complex of the wrist.

What is a piano key sign in medical terms?

pi·a·no key sign (pē’ăn-ō kē sīn) A maneuver used to determine injury to the coracoclavicular ligament, whereby a downward pressure is applied on the distal end of the clavicle. The result is positive if the clavicle pops up after release of the downward pressure.

How do I check my DRUJ instability?

Different physical tests for the diagnosis of DRUJ instability have been described, including the Ballottement test, radius pull test, clunk test, extensor carpi ulnaris (ECU) test, and press test. The Ballottement test is considered the most reliable physical examination test for DRUJ instability.

How do you test a piano key?

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.

How do you know if you have a TFCC tear?

Symptoms of a TFCC tear include pain on the outside of the wrist, reduced range of motion, swelling in the wrist, popping or clicking when moving the wrist, or limited ability to grasp objects. While anyone can develop TFCC, athletes, being over 50 and having chronic inflammation are risk factors for developing TFCC.

What position is DRUJ most stable?

Stability is usually in a neutral or supinated position (as illustrated), except in the rare cases of anterior displacement of the ulnar head. Most surgeons recommend cast or brace splintage of forearm rotation during the period of K-wire transfixion.

How rare is Radioulnar Synostosis?

Congenital radioulnar synostosis is rare, with approximately 350 cases reported in journals, and it typically affects both sides (bilateral) and can be associated with other skeletal problems such as hip and knee abnormalities, finger abnormalities (syndactyly or clinodactyly), or Madelung’s deformity.

How is the piano key sign test done?

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.

How to test for pseudostability of the wrist?

Pseudostability test hold patients hand in right hand and forearm with left, normal wrist clunks on palmar displacement of hand on forearm. Nonspecific test. Resistance to movement = pseudostability and may be due to wrist pathology.

What is the Shuck test for wrist pain?

2. Kleinman shear test (shuck test)- Examiner opposite patient, contralateral thumb over dorsum of lunate, index finger over pisiform. Attempt to squeeze thumb and index finger together. Pushing the pisiform dorsal arouses pain in the lunotriquetral joint.

What causes pain on the ulnar side of the wrist?

Ulnar-Sided Wrist Pain Caused by the Extensor Carpi Ulnaris 3/13/2016 4 Extensor Carpi Ulnaris Arises from lateral epicondyle of distal humerus Passes through a fibro-osseous tunnel as it leaves the f/a 6thextensor compartment Lies in a bony groove on dorsal surface of ulna Inserts into base of 5thMC Innervation: ulnar nerve