 [ Symptoms ] had a pin inserted into by broken arm in 1974 could it cause pain and weakness after all those years [ Disease ] that is a very interesting question i certainly think this warrants an investigation my initial reaction is that a pin in the bone should not cause any problems no matter how long it stays in but my second reaction was that i do not know and you may not either exactly what type of pin was inserted was it a screw into the bone a rod running the length of the bone we know for example that screws used to repair hip fractures can cause pain years later either from irritation to the surrounding tissues or due to arthritis it is not impossible the same could be true with your arm so i would suggest you make an appointment with your primary care provider he or she can do an initial evaluation and if necessary refer you to a specialist hope you feel better soon