<unk>  is a condition restricting dorsiflexion of the<unk>  ("big toe").<unk>  (osteoarthrosis with restricted motion) is the second most common disabling deformity of the first metatarsophalangeal joint after<unk>  valgus. The disability with<unk>  is greater than that seen in<unk>  valgus because removal of shoes does not relieve the pain; dorsiflexion at the metatarsophalangeal joint is severely restricted and painful.<unk>  is most commonly seen in middle-aged patients, but can develop during adolescence. Unlike<unk>  valgus, males appear to be slightly more affected than females.
Hallux rigidus
Klumpke paralysis
Myotonia congenita
Spastic diplegia
Spinocerebellar ataxia
Onychogryposis
Benign paroxysmal torticollis
Spasmodic torticollis