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A novel points system to predict the prognosis of ulnar neuropathy at the elbow
Author(s) -
Beekman Roy,
Zijlstra Wobbe,
Visser Leo H.
Publication year - 2017
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25406
Subject(s) - elbow , ulnar neuropathy , medicine , ulnar nerve , compound muscle action potential , weakness , muscle weakness , scoring system , surgery , electromyography , physical medicine and rehabilitation , electrophysiology
: In this study we aimed to identify prognostic factors of ulnar neuropathy at the elbow (UNE) and developed a scoring system to establish the prognosis. Methods : We collected baseline clinical, electrophysiologic, and ultrasonographic data from 2 cohorts. The outcomes for all patients were determined on follow‐up. Prognostic factors were determined using single and multiple variable analyses. A points system was developed to determine the risk for an unfavorable outcome. Results : Of the 220 patients with UNE 178 (81%) could be re‐evaluated. Four variables were retained in the prediction model for a points system. An unfavorable outcome was associated with right‐sided UNE, more severe weakness of the abductor digiti minimi (ADM), and more pronounced ulnar nerve thickening. A compound muscle action potential amplitude reduction across the elbow of ≥16% (particularly if ≥ 50%) was associated with a more favorable outcome. Conclusion : Outcome in UNE may be predicted by scoring 4 parameters. Muscle Nerve 55: 698–705, 2017