It is evident that in certain cases of clinically diagnosed, subdeltoid bursitis, the roentgen ray has shown shadows in the region of the subdeltoid bursa, which have been proved by operation to be due to a calcareous deposit; but it is in dispute as to just where the deposit occurs,—whether in the bursa, the walls of the bursa, or in the tendons and bodies of the spinatus muscles. In certain other cases, where the roentgen ray has shown shadows similar to the above, they have been observed to disappear under simple treatment, to exist without causing serious inconvenience, and to be present in at least two regions other than the subdeltoid, viz.: over the greater trochanter of the femur and at the knee joint. The shadows may appear very shortly after an injury, and have been observed to disappear almost as quickly. The shadows may be single or multiple, resembling the shadows of calculi, but are sometimes so extensive as to suggest the extravasation of an opaque fluid into the tissues. The operative findings would tend to show that the shadows are due to a calcareous deposit, but it is difficult to believe that a calcareous deposit could be deposited so rapidly and at times reabsorbed so quickly. The whole subject is at present very confused, and all cases should be carefully studied and checked up by roentgen-ray examination, operation when indicated, combined with careful anatomical study, chemical examination, etc.
- Copyright © 1916 by The Journal of Bone and Joint Surgery, Incorporated
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