The big toe joint (called the hallux metatarsal phalangeal or MTP joint). If there is a genetic predisposition to limited joint motion here the eventual osteoarthritis will cause pain and decreased function.
Hallux Rigidus is a disorder of the joint located at the base of the big toe and is caused by genetics or overuse.
Patients who have risk factors should seek treatment from a foot doctor before it becomes a continuous cycle of pain and jamming of the joint.