No it's not. You guys having an inferior medical staff (or just really bad luck with injuries for several consecutive years, whichever way you wanna look at it) does not mean that having one or multiple injury crisis (per year) is "the normal".
For us the normal is having 3 out of our back 4 fit and playing someone who's fit alongside VVD.
give over for feck sake. Your medical staff is so incredible that it can prevent or heal the sort of impact injuries that every team suffers one way or another over the course of a season?