Also, keep in mind mercury exposure can affect your mental state, so don't assume your personal assessment of your health is valid. It's a good idea to contact Poison Control or consult your physician. Mercury First Aid. If you do get mercury on your skin, seek medical attention and follow professional advice.
Definition of orthotics. : a branch of mechanical and medical science that deals with the design and fitting of orthotics.
A custom orthotic is a device designed to align the foot and ankle into the most anatomically efficient position. They look like insoles, but are biomechanical medical appliances that are custom made to correct your specific foot imbalance. Custom orthotics work on your feet much like glasses work on your eyes - they reduce stress and strain on your body by bringing your feet back into proper alignment.