What is hallux rigidus?

Hallux rigidus is a progressive condition that affects the base of the big toe, making it difficult to bend the toe up or down. This joint, called the metatarsophalangeal (MTP) joint, is important because we use it to push off and it has to bend with every step. If it starts to stiffen, walking and many other motions can become difficult and painful.

In its earlier stage, when motion is only somewhat limited, the condition is called hallux limitus. But as the problem advances, the toe’s range of motion gradually decreases until it reaches the stage of “rigidus,” or what is sometimes called a “frozen joint.”