Short segment stimulation of the anterior transposed ulnar nerve at the elbow.
OBJECTIVE
To determine whether short segment stimulation after anterior subcutaneous transposition of the ulnar nerve reaches normal values and correlates with postoperative clinical findings.


METHODS
Comparative cross-sectional study.


METHODS
Outpatient clinic of a university department of physical medicine and rehabilitation.


METHODS
Nineteen patients (15 men, 4 women) with 21 surgically treated ulnar neuropathies at the elbow; and 19 healthy controls (11 men, 8 women) with 24 measured nerves.


METHODS
Assessed motor function of ulnar innervated muscles and staged into 4 categories; used questionnaire to assess clinical course of the nerve lesion and graded into 5 categories; took electrophysiologic recordings to measure motor conduction velocity and compound muscle action potentials; and studied short segment stimulation across elbow and lower arm.


METHODS
Mean +/- standard deviation of ulnar short segment conduction time across the elbow, amplitude and motor conduction velocity; grading of ulnar nerve lesions; grading of the course of disease after surgery; and logistic regression and correlation (Spearman's correlation coefficient) for electrophysiologic and clinical parameters.


RESULTS
Sixteen nerves showed focal conduction slowing in patients. No significant correlation between the course of disease and electrophysiologic parameters was seen. For stepwise logistic regression, there was a significant effect between grade of nerve lesion and amplitude, but no significant effect between the course of disease and electrophysiologic parameters.


CONCLUSIONS
A focal conduction slowing across the elbow after anterior subcutaneous transposition does not correlate with postoperative clinical findings.
Paternostro-Sluga
T
T
Department of Physical Medicine and Rehabilitation, University of Vienna, Vienna, Austria. Tatjana.Pasternostro-Sluga@akh-wien.ac.at
Ciovika
R
R
Turkof
E
E
Zauner-Dungl
A
A
Posch
M
M
Fialka-Moser
V
V
D000293:Adolescent; D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D018450:Disease Progression; D004550:Elbow / Q000294:innervation*; D004558:Electric Stimulation; D004576:Electromyography; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009048:Motor Skills / Q000502:physiology*; D009416:Nerve Regeneration / Q000502:physiology; D016067:Nerve Transfer / Q000009:adverse effects / Q000379:methods; D009431:Neural Conduction / Q000502:physiology*; D020127:Recovery of Function; D011795:Surveys and Questionnaires; D013997:Time Factors; D016896:Treatment Outcome; D014459:Ulnar Nerve / Q000503:physiopathology* / Q000601:surgery*; D017769:Ulnar Nerve Compression Syndromes / Q000503:physiopathology* / Q000601:surgery*