 Subacromial pain SAP, also referred to as subacromial impingement syndrome, is characterized by pain in the shoulder joint, which is aggravated by elevation of the arm and or during overhead activities. Subacromial pain has been suggested to be an end station to numerous pathologies of the shoulder and can be considered to include a variety of symptoms, and not to be seen only as a single diagnosis. In Denmark, SAP is frequently reported as a cause of pain in the shoulder joint, and based on studies from Sweden and the Netherlands, is estimated to cost the Danish society around 1.35 billion. DKK annually. 