Conversation so far:
What kind of injury did Robert Schumann suffer?
Some say that Robert Schumann permanently injured a finger on his right hand while others argue that the disability was chronic and was not caused by a finger strengthening device.
Are there any interesting aspects about the Robert Schumann article?
Clara Schumann discredited the inury story, saying the disability was not due to a mechanical device, and Robert Schumann himself referred to it as an affliction of the whole hand.“
What injury got in the way of Robert Schumann's career as a concert pianist?
Robert Schumann injured a finger on his right hand with a mechanical device that held back one finger while he exercised the others, to strengthen the weakest fingers

Question: Did the Device that Schumann used for his hand improve his condition?
Self-contained rewrite: Did the device that Robert Schumann used for his hand improve his condition?