This is a common form of arthritis located at the base of the
big toe (this joint is called the metatarsophalangeal, or MTP
joint). This joint is important to the proper function of the
foot, as it needs to bend when the foot is in motion.
If this joint begins to stiffen, walking can
become a painful experience. The MTP joint has cartilage that
covers the bones.
Sometimes the cartilage can be damaged by either
wear or tear or injury, which leads to the raw bones rubbing
together and can create a bone spur (overgrowth). This overgrowth
can restrict the range of motion in the toe resulting in stiffness.

Symptoms of Hallux Rigidus include a stiffness
in the big toe when walking or swelling around the big toe joint.
A bump such as a callous or bunion could also be suggestive
of this condition, as can limitation in the range of motion
.