Also known as Morton's syndrome / Morton's principle / Morton's triad
Synonyms: Metatarsus atavicus, metatarsus primus brevis, metatarsus primus brevis varus syndrome, pied ancestral (French), pied de Neanderthal (French), short first metatarsal syndrome
Mortons Foot. The big toe (white arrow) is more than 2mm shorter than the second toe.
Morton's Foot (Toe) is a relatively uncommon foot structure in which the big toe is more than 2mm shorter than the second toe.
In 1997, I reported that Morton's Foot and Rothbarts Foot appeared to be the same foot structure.
Morton's Foot - the big toe is shorter than the second toe but not elevated.
Mortons Foot. The black arrow points to the short 1st metatarsal, which is the hallmark of Mortons Foot (courtesy of Stephan Praet MD, Maastricht University, Netherlands).
Triad of Morton's Foot:
Congenital short first metatarsal bone
Hypermobile first metatarsal segment
posterior located sesamoid bones
Callosities under the second and third metatarsals