Well-Known Member
My 2 cents. When playing BH drive, the relative position of elbow to the hand (whether it is higher or not), makes a big difference in shoulder (whether it is strained or not).
When playing BH topspin, the hand will usually start lower than elbow. The stroke should end up with elbow down, as pointed out here:
https://www.tabletennisdaily.com/fo...nnis-Chit-Chat&p=338973&viewfull=1#post338973
BUT: even if your elbow is down and your forearm continues too much to the right (right-hander), you are no more practicing TT, but Ju-Jutsu (arm-lever, armhebel), and you feel it in shoulder again. In this sense, favor compact stroke...
P.S. Apologies if this is all too well known for you. It seems the body tells us automatically what is wrong and what is not. It feels like tautology.