Ulnar neuropathy at the elbow: how frequent is the idiopathic form? An ultrasonographic study in a cohort of patients.
Filippou
G
G
Department of Clinical Medicine and Immunology, Rheumatology Unit, University of Siena, Siena, Italy. g_filippou@virgilio.it
Mondelli
M
M
Greco
G
G
Bertoldi
I
I
Frediani
B
B
Galeazzi
M
M
Giannini
F
F