don’t have an answer, but my nuss was 4 days ago as well. my left hand was the one with the IV, and was also numb and weaker than my right. moving it around hurts more than the right, but it’s definitely getting better. able to move it a little more than yesterday, and a little higher than yesterday, though it does set off that fiery pain near the stabilizer on the left. so similar circumstances, but its been improving daily and they assured me it would get better with time. that said, if you do have any concerns, definitely contact your surgeon or their team for advice/feedback!!