The hard part is getting the two halves of the broken circle together once I put one in the hand. If I put the little part back in the hand it only goes in in a way that wont let me put the to halves together.
Did that make sense.
A joint that small can't be fixed with glue, it's just too fragile. You're best off drilling a hole in the base of the hand and plugging the peg into that hole. Again, don't even try to glue that joint, you'll never get a stable fix.