How to differentiate a shoulder bursitis from a tendinosis?
A chronic shoulder bursitis or a tendinosis ?
How do we distinguish a chronic subdeltoid bursitis from a tendinosis ?
Repeat the resisted tests from a lying position and compare with the test result found in the standing position .
As an alternative, we could also perform resisted tests with some traction built in at the arm.
As an extra option you could also perform a 5’ test transverse friction massage onto the tenoperiostal aspect of the tendon and interpret the test result afterwards. In case of a bursitis, there won’t be any change.