The cause of Clubfoot in babies is not really known but clubfoot happens due to a birth defect and could be caused by health problems that the mother has or if she smokes, or drinks during pregnancy but there's no way to 100% know if that is the cause or not but it's a possible cause.
To avoid birth defects the mother needs to eat healthy, avoid smoking, drugs, cigs, drinking alcohol etc.
Clubfoot can usually be corrected without surgery by stretching and casting the clubfoot but in some cases the clubfoot will require surgery to correct the clubfoot.