Table 4.

Preoperative Patient-reported Pain and Numbness

	Type A, n = 20	Type B1, n = 7	Type B2, n = 5	Type B3, n = 12	P
Upper trunk, n (%)	2 (10)	0 (0)	1 (20)	1 (8)	0.08
Middle trunk, n (%)	7 (35)	0 (0)	0 (0)	1 (8)	0.04*
Lower trunk, n (%)	6 (30)	3 (43)	0 (0)	5 (42)	0.12
Upper middle trunks, n (%)	3 (15)	1 (14)	0 (0)	0 (0)	0.42
Middle-lower trunks, n (%)	2 (10)	3 (43)	4 (80)	3 (25)	0.048*

The brachial plexus trunk distribution is based on patients’ pain drawings and physical examination (response to Tinel over the brachial plexus.