B31 Shangliao ( V31 )

Location In the First posterior sacral foramen

Indications Low back pain , dysuria , constipation , irregular menstruation , morbid leucorrhoea , prolapses of the uterus .

Method Puncture perpendicularly - 0 . 8 - - 1 . 2 inches . Moxibustion is applicable

Vasculature The posterior branches of the lateral sacral artery and vein .

Innervation At the site where the posterior ramus of the first sacral nerve passes .