The elbow,when luxated,induces the most serious consequences,fevers,pain,nausea,vomiting of pure bile;and this especially in dislocations backward,from pressure on the nerve which occasions numbness;next to it is dislocation forward.The treatment is the same.The reduction of dislocation backward is by extension and adaptation:the symptom of this variety,loss of the power of extension;of dislocation forward,loss of the power of flexion.In it a hard ball is to be placed in the bend of the elbow,and the fore-arm is to be bent over this while sudden extension is made.