Purpose: The purpose of this study was to develop a new protocol for the performance of jerk
tests under anesthesia, and to study its correlation to intra-articular pathology
and the diagnosis of a lax or unstable shoulder. Type of Study: Prospective controlled study. Methods: We performed a systematic examination, in the office as well as under anesthesia,
of 300 patients (600 shoulders) divided into 3 homogeneous groups: 100 presented with
instability resulting from recurrent dislocation of one or both shoulders, 100 presented
with alternative shoulder symptomatology without signs of instability, and a further
100 underwent surgery for other locomotor system pathologies. Results: The following statistical sensitivity values were found: anterior jerk, 90.7%; inferior
jerk, 96.2%. Correct interpretation of jerk tests under anesthesia will help us decide
the type and scope of required surgical therapy. Level of Evidence: Level III, Diagnostic Study of Nonconsecutive Patients.
Key Words
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© 2005 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.
