B23 Shen Shu ( Back Shu Point of the Kidney , V23 )

Location - - 1 . 5 cun lateral to Du4 , at the level of the lower border of the spinous process of the second lumbar vertebra

Indications Nocturnal emission , impotence , enuresis , irregular menstruation , leucorrhoea , low back pain , weakness of the knee , blurring of vision , dizziness , tinnitus , deafness , edema , asthma , diarrhea .

Method Puncture perpendicularly 1 - - 1 . 2 inches . Moxibustion is applicable

Vasculature The posterior branches of the second lumbar artery and vein .

Innervation The lateral branch of the posterior ramus of the first lumbar nerve ; deeper , its lateral branch .