During my quest to find the best way to joint doll arms and legs I came across this. Use bead caps to finish off the ends of the limbs and then connect them with a bead in the middle. It's quite ornate but for this doll it's perfect.
In this example I drilled holes into the ends of the arms and glued wire into one hole then strung a bead cap and glued it into place. I then strung a bead and again a bead cap. I drilled an extra hole below and above so I could add more beads. These are just decorative.