<s>[INST] Is it possible that having titanium rods in both of my femurs can affect fatigue. I am chronically cold but one website said that rods aren t affected by weather, however Im not sure why I am so incredibly freezing all the time since the placement of my rods, but I am wondering then if there is any correlation of metal in your body and fatigue. [/INST] Hi there, welcome to HCM, thanks for your  question.There is no correlation between insertion of titanium rods in femur and the sensation of fatigue from what we know form current available literature. However it is possible that you might feel week in your legs after such an injury and surgery due to the lack of use of the muscles of the lower limb.This is something similar to disuse atrophy. It is advisable to do strengthening exercises of all the muscles around your lower limb under the supervision  of your physician and a trained physiotherapist.It is possible that over a time frame of 3 to 6 months your will start feeling better strength  which such exercises.On the other hand if you are feeling general fatigue including your whole body general factors  like anaemia should be considered.It is possible that you would have lost considerable  amount of blood during your injury and during your surgery, which can result in anemia.Based on certain blood tests you might require supplements  to help you recover from such a situation.Regarding feeling cold, low grade smouldering fever can sometimes make you feel cold.Since you have an implant in your body it would be better to see your treating  physican to rule out the same.Examination and some blood tests can provide evemidence regarding the samendHope this answers your question.All the best Thank you. with best regards Dr SBK </s>