Table 1.

Distance From the Acromion Process to the Anterior Branch of the Axillary Nerve in Each Arm Position

	Mean ± SD, mm	Minimum, mm
Anterolateral edge
Arm at side	52.76 ± 4.64	45.49
30° of abduction	49.48 ± 4.77	42.75
60° of abduction	46.00 ± 4.75	40.07
90° of abduction	42.88 ± 4.59	36.87
Midlateral edge
Arm at side	52.20 ± 4.21	46.07
30° of abduction	49.66 ± 4.54	43.37
60° of abduction	46.39 ± 4.23	40.33
90° of abduction	42.90 ± 4.11	37.00
Posterolateral edge
Arm at side	53.86 ± 4.77	45.40
30° of abduction	50.83 ± 4.83	43.55
60° of abduction	47.34 ± 4.23	40.51
90° of abduction	43.28 ± 4.06	36.48