The elbow joint is a type of hinge joint. It bends (flexion) and straightens (extension), as well as rotating to position your palm up or down. The normal range of flexion and extension is from 0 to 145 degrees, although the range of motion that we work within for daily activities is only from 30 to 130 degrees. This means that for most people a bit of loss of motion does not cause problems with function. However, with a reduction of extension greater than 30 degrees and or a flexion less than 130 degrees most people will complain of loss of function. Loss of extension is usually less disabling than loss of same degree of flexion.