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Tips of the trade. Detecting patellar surface irregularities
1Department of Orthopaedics, Temple University, Philadelphia, Pennsylvania.
Orthopaedic Review
|February 1, 1992
Abstract:
A method of determining the presence of patellar surface irregularity, which the author calls the megaphone test, is described. By forming a simple echo chamber with the hand, crepitant sounds created by patellar roughening can be detected. This test, however, does not quantify or determine the cause of the crepitus.
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