Italian doctors suggest Da Vinci's 'claw hand' stopped him painting

Some Italian doctors suggest that Leonardo da Vinci could have experienced nerve damage in a fall, impeding his ability to paint in later life. They diagnosed ulnar palsy, or "claw hand", by analysing the depiction of his right hand in two recent artworks. It had been suggested that Leonardo's hand impairment was caused by a stroke. But according to the Journal of the Royal Society of Medicine, the doctors suggest it was nerve damage that meant he could no longer hold a palette and brush. But art historians have always debated which hand he used to draw and paint with. Analysis of his drawing suggests left-handedness but most historical biographical documents indicate that he used his right hand when he was creating other kinds of work.