The Reserch of Inching Test and EMG Location for 87 Patients with Cubital Canal Syndrome

Objective To study the location diagnostic value of inching test and routine EMG in Cubital Canal Syndrome. Methods 87 patients with Cubital Canal Syndrome were treated with the incling test together with the the routine EMG.Results One or more indexes of inching test were abnormal in 78 nerves(86%); all the 91 patients were divided into group A (slight) with 33 cases, group B (mild) with 23 cases, group C (severe) 31 cases. The highest positive rate was the reducing of amplitude, then was the significant changes of wave form and the extended duration, and the reducing of conduction velocity. The reducing of amplitude were more than 30% in all the three groups. The incling test hase the highest positive rate(P0.01)compared with the routine EMG(69%).Conclusion The incling test might have an important role in the location diagnosis of Cubital Canal Sydrome. The significant decrease of amptitude migh has higher positive rate compared with that of the conduction velocity.