Horse and mule wrecks being common around here, I've seen a lot of broken wrists (I'm not a wood guy, and pass them on to cabinet makers etc.) and I've seen some truly great repairs. Most times, it appears the best repairs involve some angle drilling down thru the wrist with small hardwood dowels. I don't know what adhesives they use on assembly, but it must be very thin since it's very difficult to detect the original break line.
