TY - JOUR
T1 - IN-RATIO: a new test to increase diagnostic sensitivity in ulnar nerve entrapment at elbow
AU - Caliandro, Pietro
AU - Foschini, Mariangela
AU - Pazzaglia, Costanza
AU - La Torre, Giuseppe
AU - Aprile, Irene Giovanna
AU - Granata, Giuseppe
AU - Tonali, Pietro Attilio
AU - Padua, Luca
PY - 2016
Y1 - 2016
N2 - OBJECTIVE:
Motor conduction velocity may yield false-negative results in mild ulnar nerve entrapment at elbow (UNE). There is evidence that the clinical heterogeneity of UNE may be due to the different involvement of fascicles. We hypothesized that, if fibres to FDI are more damaged than fibres to ADM, a relative slowing of motor conduction velocity (CV) at the segment across the elbow recording from FDI (FDI-CV) versus CV at the same segment recording from ADM (ADM-CV) would occur.
METHODS:
We calculated the ratio between FDI-CV and ADM-CV (IN-RATIO) in 60 consecutive UNE patients, 40 norms, and 16 patients with lower cervical radiculopathy. The UNE sample consisted of (1) patients with neurophysiological evidence (UNE NF+), (2) patients without neurophysiological evidence (UNE NF-). We evaluated the possible usefulness of the IN-RATIO to increase sensitivity in diagnosing UNE.
RESULTS:
The IN-RATIO was lower in the UNE NF- than in norms (p<0.001) and cervicobrachialgia sample (p=0.02). We found that if the IN-RATIO is
AB - OBJECTIVE:
Motor conduction velocity may yield false-negative results in mild ulnar nerve entrapment at elbow (UNE). There is evidence that the clinical heterogeneity of UNE may be due to the different involvement of fascicles. We hypothesized that, if fibres to FDI are more damaged than fibres to ADM, a relative slowing of motor conduction velocity (CV) at the segment across the elbow recording from FDI (FDI-CV) versus CV at the same segment recording from ADM (ADM-CV) would occur.
METHODS:
We calculated the ratio between FDI-CV and ADM-CV (IN-RATIO) in 60 consecutive UNE patients, 40 norms, and 16 patients with lower cervical radiculopathy. The UNE sample consisted of (1) patients with neurophysiological evidence (UNE NF+), (2) patients without neurophysiological evidence (UNE NF-). We evaluated the possible usefulness of the IN-RATIO to increase sensitivity in diagnosing UNE.
RESULTS:
The IN-RATIO was lower in the UNE NF- than in norms (p<0.001) and cervicobrachialgia sample (p=0.02). We found that if the IN-RATIO is
KW - Diagnosis
KW - Entrapment of ulnar nerve
KW - Neurography
KW - Diagnosis
KW - Entrapment of ulnar nerve
KW - Neurography
UR - http://hdl.handle.net/10807/88488
M3 - Article
SN - 1388-2457
VL - 119
SP - 1600
EP - 1606
JO - Clinical Neurophysiology
JF - Clinical Neurophysiology
ER -