Gb41 - Key point on the Dai Mai Extraordinary vessel. Located at the top of the angle formed by the fourth and fifth metatarsals. This point boosts the Gall-Bladder meridian in summer and disperses it in winter. In all seasons, it can treat the following disorders: Horizontal back pain in the lumbar region (-). Hip pain (-). Trembling (-), combined with point Pc3 (-). Shoulder pain (-). Sight disorders (-). Lactation disorders (-). Inflammation of the breasts (-), combined with point GB21 (-)