which is relevant when the patient’s range of motion is compared with normative data for evaluation of impairment. It is recognised that it is difficult to develop a standardised measurement technique ...

"Our joints produce synovial fluid ... The benefit: This improves range of motion by moving your shoulders through all planes of motion: up, down, forward and back, protraction, retraction ...

That's why doing stretches for shoulder pain is so important for keeping your muscles mobile and joints ache-free ...