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Muscles controlling the wrist

As most muscles take their origin at the elbow and overrun it, the subject’s elbow should always be held in extension to put maximal stress on these structures.
All movements are executed with the wrist held in the neutral position:

• halfway between flexion and extension
• halfway between radial and ulnar deviation.

The positioning is the same for the four tests.

Positioning for testing the resisted movements
of the wrist.

The subject stands with the arm hanging, the elbow extended and the forearm
in neutral position. The examiner stands level with the subject’s elbow. The contralateral arm lifts and carries the elbow and keeps it extended.The hand stabilizes the forearm. The other hand grasps the subject’s hand distally on the metacarpals to apply resistance.

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