Knee

The joint between the upper and lower leg, whose anterior aspect is protected by the knee-cap and whose dorsal surface is called the back of the knee (popliteal fossa). The knee is the place at which important sinews converge; hence Plain Questions (素问 sù wèn) states, The knees are the house of the sinew. Limpness of the knees is associated with insufficiency of the liver and kidney, and knee pain is associated with the same and/or with the presence of wind-cold-damp. See house of the sinews; limp lumbus and knees; knee pain; crane’s-knee wind.