Research Article

Thickness of the Deltoid Muscle and Location of the Anterior Branch of the Axillary Nerve and the Posterior Circumflex Humeral Artery for Deltoid Injections

Figure 2

The distribution location of the main branches of the axillary nerve and the PCHA in the deltoid muscle. The axillary nerve and PCHA were located at a mean distance of and downward from the AP-PP line (-axis), respectively. Most of the main branches of the axillary nerve were concentrated in the third section (4-6 cm, 51%), with the branches of the PCHA in the fourth section (6-8 cm, 69%).