An orthopedic appliance designed to support, straighten or improve the functioning of a body part; an orthosis(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "orthotic" in a sentence
"I'm very happy to say that I can wear a shoe that is stylish while I wear an orthotic, which is a brace."
"The characteristics of Familial Dysautonomia that give rise to treatment modifications of accepted orthotic intervention."
"Martin Ramin for The Wall Street Journal BackJoy Core orthotic BackJoy Chief Executive Bing Howenstein say his company's device can be used any place you sit—including a car seat or sofa."