Sex
Male/female


23(67%)/11(33%) 

Age
  Mean
  Range


39.5 y/o
(18-74 y/o)

Duration of patients symptoms


6-14 months

Involvement side
*Right
*Left
*Both sides


13
18
3

Handedness
*Right
*Left


27
7

Physical exam findings
*Abduction weakness
*Sensory loss
*Both


16
8
5

Etiology
*Idiopathic
*Traumatic


30
4

Table 1: Patients’ characteristics.