I wonder what findings in an MRI may influence the treatment in case of an elbow tendinopathy. I have noticed that a fair amount of physicians (at least in the United States and in France) are reluctant to order MRIs, so I wonder whether it is due to the cost of an MRI, or its usefulness to decide the treatment.
For example, http://radsource.us/lateral-epicondylitis/ says:
MRI can establish the extent of tendon injury and assess for a coexisting radial collateral ligament injury (4a), which may hinder the patient’s response to conservative therapy. In addition, the lack of expected MRI changes in a patient with suspected lateral epicondylitis suggests radial nerve entrapment, which may mimic or coexist with lateral epicondylitis.