What Causes Pain In The Buttock And Tenderness In The Elbow?

i have a pain deep in my right buttock, i feel a twinge sometimes when walking or just sitting, like a spasm, gives a sharp pain. no numbness or tingling feelings anywhere else.
also have a tenderness pain in my right elbow. causing a slight difficulty in gripping. dont know whether there is a connection bewteen the 2, but the severity of the pain seems t alternate between the 2.