front outer cv boots changed=alignment necessity?

[omodos]

I cant for the life of me remember if i did an alignment after the cv boot replacements, this is the 3rd or 4th time front outer cv boot change the X has had in its 113k ...mechanic said take it for alignment...but is this needed..? for sure need front thrust bushings too and after that i am sure did alignments but not sure about when cv boots done