The lack of an ankle strap that holds the foot in place is also a common reason for injury, as this causes wearers to scrunch their toes in an effort to keep the flip-flop in place, which can result in tendonitis.Despite all of these issues, flip-flops do not have to be avoided completely.Flip-flops are a type of sandal typically worn as a form of casual wear.They consist of a flat sole held loosely on the foot by a Y-shaped strap that passes between the first and second toes and around both sides of the foot.The modern sandals are made of more modern materials, such as rubber, foam, plastic, leather, suede, and even fabric.While flip-flops do provide the wearer with some mild protection from hazards on the ground, such as hot sand at the beach, glass, thumb tacks or even fungi and wart-causing viruses in locker rooms or community pools, their simple design is responsible for a host of other injuries of the foot and lower leg.
These early versions of flip-flops were made from a wide variety of materials. The Ancient Greeks and Romans wore versions of flip-flops as well.
It caught on in the 1950s during the postwar boom and after the end of hostilities of the Korean War.
As they became adopted into American popular culture, the sandals were redesigned and changed into the bright colors that dominated 1950s design.
The lack of support provided by thong sandals is thought by some to be a major cause of injuries.
Some flip-flops have a spongy sole, causing the foot to roll further inward than normal when it hits the ground—an action called over-pronation, which is responsible for many foot problems.