i had a total middle knuckle replacement on my right hand the knuckle that forms a fist, i had more range of motion with my old arthritis knuckle that i was born with, i will not never ever have another knuckle replacement i will keep the joints i was born with , i would rather have them because they have more
range of motion and the silicone knuckle only provided 45 degrees
of motion, if you go beyond that it will break, I regret having this operation, because i was better off with the knuckle