My father has issue with his right arm,which is in the joints of arm and shoulder. We concerned orthopedic doctor he told us" it is having because of diabetes. In the joints forms net like structure (spiderweb like)which like fungi or something. Doc. told to do physiotherapy for 3to 5 days and we did but promblem is not solved yet. What u think we should get a MRI report to detect the problem and cause.or Plese give wise advice Thank u...