Study on the Angle of Needling Point Yamen(GV 15)
Zhao Chuanxiang1, Lü Xiuhua2 (1. Department of Acup-Moxibustion, Affiliated Hospital of Tianjin Academy of TCM, Tianjin 300020, China; 2. Section of Imagology, General Hospital of Chinese General Company of Railway Construction)
［Abstract］Purpose To study on the safe angle range of needling Yamen (GV 15). Methods The angles from the body surface of Yamen (GV 15) to the joint line between the level opposide atlas and axis, and the joint line between body surface of Yamen point and posterior margin of the great occipital foramen, upper margin of arcus posterior atlantis were measured respectively in 1120 cases of T1 weighted image of median sigittal position with MRI, and the data were processed by computer. Results The safe angle range for needling Yamen (GV 15) were: 16.27±7.68～29.46±7.23 degrees for males and 18.46±4.81—33.61±7.83 degrees for females; the danger angle of upward oblique insertion was negatively correlated with the extension of bowing and raising the head, that is, the larger the angle of backward raising the head, the smaller the range of danger angle of needling into the great occipited foramen. The correct body position for needling Yamen point is raising the head.
［Key words ］]Point GV 15 (Yamen); Needling Direction; Needling Depth