What can I do to prevent my shoe insoles from sliding around?

Are the insoles adjustable? Usually, loose orthotics are due to the fact they haven't been correctly adjusted. This can usually be done with a pair of scissors to simply trim the material to the right size. Your problem seems to be the fact they are already too small, which unfortunately cannot be rectified for obvious reasons. You should probably invest in some new ones and make sure you adjust them correctly to ensure you have secure shoe insoles.

Make use of insole glue or a velcro stick on patch to secure the insole down. It does, however, seem that the insoles you have may be too small and not support the foot entirely. Should the use of them increase pain experienced, it may force your hand and a new pair may be the best option.

If you are looking for how to keep your shoe insoles from sliding around, you can use a velcro patch to glue them down -provided it is still effective in relieving your pain. If it isn't, getting a replacement that fits your foot may be in order.

The fact that your insoles slide around a lot suggests they are smaller than your shoe. You can use an insole glue, velcro pad, or double-sided tape to secure them in place if it works to relieve your pain. If not, you may need to get an insole with a better fit.