The lung is associated with the pulses and cunkou is the major converging place of the qi of the vessels. This point can be used for treating disorder of the vessels, such as vasculitis, acrotism and arteriosclerosis. This point, the convergent place of qi of the bones, is located superior to all of the Back-shu points. It can be used for treating disorders of the bones such as pain in the shoulder, scapula or back. It was considered in ancient times that marrow was a part of the bones.
Marrow is thought of as helping the growth of bones.
Thus, it is an essential factor in the ability to walk normally. It is used in the treatment of disorders of the marrow, such as myo-asthenia and anemia. Clinically, the Influential Points can be used as main points, secondary poinrs being prescribed according to the varying symptoms and signs. Palpation of the Influential Points can also be a useful aid to diagnosis, tenderness at a given point indicating a disorder of the related tissue.