5.2 Ren maiLocation
On the anterior midline, on the level of the 4th intercostal space.How to find
Quick method, especially in men:Locate Ren-17on the ster-
num, between the two nipples. For more detailed orientation on
the intercostal region (➞3.5), first, locate the manubriosternal
synchondrosis, which can be felt on the sternum as a well-
defined horizontal bony structure on the level of the costal carti-
lage of the 2nd rib. The 2nd intercostal space is below it. From
there, count in an inferior direction to the 4th intercostal space.
Locate Ren-17on this level on the midline of the sternum.
Located on the same level in the 4th intercostal space are
➞KID-23/ST-17/P-1/SP-18/G.B.-22/G.B.-23(2 cun lateral to
the midline/on the nipple/1 cun lateral to the nipple/6 cun lateral
to the midline/on the axillary line/1 cun anterior to ➞G.B.-22).Needling
Depending on the indication, 0.5–1 cun transversely (subcuta-
neously) in a superior or inferior direction or towards the nipples
(for mamillary disorders). Caution: Intracardiac needling, pneu-
mothorax. The sternum can be very thin in this area owing to
embryonic ossification disorders! Moxibustion is recommended
in order to tonify the Qi, but caution with asthmatic patients.Actions/Indications
● Regulates and benefits the Qi, unbinds the chest, descends
counterflow Lung and Stomach Qi
● Benefits the breastsSpecial features
Front-mupoint of the Pericardium, meeting point with the SP,
KID, S.I. and T.B. channels. Hui-meeting point of the Qi. Sea of
Qi. Important point for respiratory disorders.Chest Centre DANZHONG Ren-17
Ren-17
Level of
4th intercostal spaceLevel of
the nipples1/2 1/21st intercostal space2nd intercostal space3rd intercostal space4th intercostal spaceST-16p3rd intercostal space4th intercostal space4th intercostal space1 cun P-14th intercostal spaceSP-18KID-24KID-23
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