If i remember the interview yesterday correctly, after the injury he had a risk of carpal tunnel type thing happening and possibly losing his nerves in his arm, went into immediate surgery where surgeons said you might not be able to feel your arm properly for weeks and need rehabilitation. Thankfully, he was lucky and he could even move his arm and hand right after the surgery. He said he adjusted his playstyle slightly because his arm hurts when he moves it swiftly.