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.
The purpose of the functional orthotic is to accurately and precisely position the foot throughout the gait cycle so as to promote proper function. Its function is not merely to support the arch, as is often the case with commercial appliances or arch supports purchased in retail stores.