“…There is rarely any local lesion to account for it. A few authors, however, have described the intensification of the symptoms of subacromial bursitis following a myocardial infarction (Libman, 1935 andBoas andLevy, 1937), and one such case is to be found in our series (Case 19). It is doubtful if this is the explanation for all such cases of shoulder pain.…”