Many trainers instruct their clients to keep the elbows high when performing an Upright Row which may create excessive internal rotation of the shoulder and potentially creating impingement of the shoulder girdle. The higher the elbows the greater the potential risk – you can modify the exercise by keeping the elbows lower so that the humerus is not greater than 20 degrees above horizontal (parallel to the floor). If there is any pain or discomfort during the movement or any unusual or abnormal pain following the movement can be eliminated from the exercise program.
Additionally, I often have my clients perform a variation of the upright row in which they externally rotate their shoulders (this rather prevents excessive internal rotation in relation to the start point) while lifting the weight upward so that their wrists are just slightly lower than their elbows and more forward as well. This reduces risk for impingement issues while developing the Deltoids in the same manner. Doing the exercise this way does bring the weight forward as well as upward so resistance should be decreased as it is further away from the mid line of the body creating more load on the muscles being developed.