For several years, Therese Glowacki had an unwelcome companion: nagging pain in her right shoulder. It was often quiet, but it barked when she threw, swam, reached out to clean a countertop, extended upward to wipe a window or other routine actions.
She recalls three incidents that could have damaged the shoulder. There was a quick fall while skiing, a slow tumble from a bike when her feet slipped out of the clips, and a sharp pull from the heavy lift of a beer keg at a CD release party for the band in which she plays marimbas…