There are a number of different devices that come under the category of “toe straighteners”. There are a number of different commercial brands (eg Correct Toes ) and a number of different types of devices that do slightly different things that fall into this category of products.
The purpose of the toe straighteners are to change the alignment of the the toes to help fix problems like hammer and claw toes. They are very useful to help a number of problems with the metatarsal bones such a metatarsalgia, plantar plate tears and Morton’s neuromas.
Some toe straighteners are more between the toes and work by separating the toes. Other toe straighteners are more below the toes and work by pulling the toes down into alignment. Other toe straighteners or spacers work by using a combination of the separation and pulling down of the toes.