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  • Title: Tinel's sign or percussion test? Developing a better method of evoking a Tinel's sign.
    Author: Monsivais JJ, Sun Y.
    Journal: J South Orthop Assoc; 1997; 6(3):186-9. PubMed ID: 9322198.
    Abstract:
    Clinicians elicit a Tinel's sign by tapping over a nerve site with their fingertips. No standard force has been established, and overzealous tapping can produce a false-positive "Tinel's sign" that is actually a positive percussion test. The purpose of our study was to determine a threshold force that produces a positive percussion test in each of seven nerve locations in the upper extremities of subjects with no known nerve injuries and in subjects with nerve injuries. These data suggest limits for the amount of force necessary to elicit a Tinel's sign. If these limits are adhered to, the incidence of false-positive responses may be kept low.
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