Table 3.

Major and minor diameters

	Ulnar nerve		Median nerve		Radial nerve
Regions	DMinor (mm)	DMajor (mm)	DMinor (mm)	DMajor (mm)	DMinor (mm)	DMajor (mm)
1	3.19*	3.91*	3.93*	5.95*	3.42 ± 0.29	7.82 ± 0.81
2	2.58 ± 0.65	4.01 ± 0.16	3.24 ± 0.71	5.67 ± 1.21	3.28 ± 1.05	5.19 ± 1.23
3	2.6 ± 0.27	4.04 ± 0.33	2.99 ± 0.66	6.27 ± 0.85	2.82 ± 0.4	4.56 ± 1.43
4	2.91 ± 0.91	4.72 ± 1.48	3.35 ± 1.39	7.07 ± 1.29	2.29 ± 0.36	5.03 ± 1.08
5	3.24 ± 0.90	5.68 ± 1.33	3.81 ± 1.45	8.56 ± 2.78	2.72 ± 0.49	4.64 ± 0.55
6	2.33 ± 0.79	4.87 ± 1.49	2.73 ± 0.78	5.26 ± 0.58	0.93 ± 0.3	3.17 ± 0.52
7	1.93 ± 0.34	3.34 ± 0.52	2.3 ± 0.27	4.47 ± 0.71	0.79*	2.22*
8	2.01 ± 0.40	3.86 ± 0.86	2.42 ± 0.31	5.25 ± 0.83	0.39*	1.08*
9	2.42*	4.89*	3.16 ± 1.17	6.18 ± 1.72	—	—

Major diameters (mm) and minor diameters (mm) in the ulnar, median, and radial nerves across all 9 regions.

^*One cadaver arm and 1 sample.