I had an extremely bizarre experience with a bilateral shoulder disarticulation amputee.  The patient is about 50 years old and is a congenital amputee.  He has been wearing body powered prostheses for his entire life and has always struggled with getting maximum range of motion with both his elbow (E400) and terminal devices (aluminum hooks 5xa)due to the limited excursion he gets from being bilateral.  With his most recent fitting of new arms we decided to go in a new direction with some of the newest technology.  We decided to fit him with bilateral Dynamic Elbows from Otto Bock along with bilateral Speed Sensor terminal devices and wrist rotators on both sides.  I must say that within 1 hour of our initial fitting, he was operating both the elbows and terminal devices beautifully.  It was probably one of the most impressive uses of bilateral upper extremity prostheses that I have treated yet.  Again, with in 1 hour, he was  isolating each of his muscles in order to operate the elbow and terminal device independently of one another.  I watched him leave that afternoon getting into his car and driving off ......independently!    I received a phone call two days later after he had returned to work stating that he was getting "bizarre" activity from his elbows and hands.  He stated that his office is located downtown and that throughout the day the hand would either lock closed or the controls would change and reverse operation.  Very weird!! But, as soon as he got out of the city, everything went back to normal.  Today was the first day I saw him back to discuss remedies.  Of course the first thing I asked him jokingly was if retirement was in his future... Since it was not an alternative, we discussed the issue with Otto Bock.  They had only heard of a couple other cases of this happening.  They recommended applying a foil wrap on the wires as well as shorten the length of the electrode wires.  So far so good, but we will not know for sure until he returns to work in 2 days.  I will keep you posted.