This condition, which occurs in adolescents and adults, can be associated with previous trauma. The true cause is not known. Most commonly,<unk>  is thought to be caused by wear and tear of the first metatarsophalangeal joint.
Hallux rigidus
Bunion
Klumpke paralysis
Periodic paralysis
Myoclonic dystonia
Torsion dystonia
Monomelic amyotrophy
Holmes tremor