 The band itself is continued as the sciatic nerve, which splits on the back of the thigh into the tibial nerve and common fibular nerve; these two nerves sometimes arise separately from the plexus, and in all cases their independence can be shown by dissection.Often, the sacral plexus and the lumbar plexus are considered to be one large nerve plexus, the lumbosacral plexus.The lumbosacral trunk connects the two plexuses.