L4 Xiabai , P4

Location On the medial aspect of the upper arm , 3 cun below the end of axillary fold , on the radial side of m . biceps brachii .

Indications Asthma , epistaxis , pain in the medial aspect of the upper arm .

Method Puncture perpendicularly - 0 . 51 inch .

Vasculature The cephalic vein and Muscular branches of the brachial artery and vein .

Innervation The lateral brachial cutaneous nerve at the place where the Musculocutaneous nerve passes through .