Bunion

A bunion (hallux valgus) is a deformity characterized by lateral deviation of the great toe, often erroneously described as an enlargement of bone or tissue around the joint at the head of the big toe (metatarsophalangeal joint).

Bunions are specifically caused by the long-term use of shoes, particularly tight-fitting shoes with pointed toes. Bunions occur when pressure is applied to the side of the big toe (hallux) forcing it inwards towards, and sometimes under or over, the other toes (angulation). As pressure is applied, the tissues surrounding the joint may become swollen and tender. Because bunions are, in all cases, caused by footwear, they are completely unknown in cultures that do not wear shoes.

The bump itself is partly due to the swollen bursal sac or an osseous (bony) anomaly on the mesophalangeal joint (where the first metatarsal bone and hallux meet). The larger part of the bump is a normal part of the head of the first metatarsal bone that has tilted sideways to stick out at its top.

Read more about Bunion:  Definition, Signs and Symptoms, Pathophysiology, Treatment

Other articles related to "bunion":

Bunion - Treatment - Surgery
... to correct a variety of pathologies that may be associated with the bunion ... At present there are many different bunion surgeries for different effects ... Bunion surgery can be performed under local, spinal, or general anesthetic ...
Mighty Mouse - Episodes - Terrytoons Theatrical Shorts
... Mouse must rescue while putting the bat-cats in their place 24 "Mighty Mouse Meets Bad Bill Bunion" November 9, 1945 (1945-11-09) Mighty Mouse must save the saloon gal singer from the ... This time, Bad Bill Bunion returns to commit crimes until Mighty Mouse defeats him and send him back to prison at Alcatraz Island 35 "The Crackpot King" November 15, 1946 (1946-11-15) Mighty Mouse must battle ...
Charlies Bunion - History
... route was to ascend Kephart Prong to Dry Sluice Gap, on the eastern flank of Charlies Bunion, and descend into the Porters Creek Valley ... Charlies Bunion, like most of the central crest of the Smokies, was fairly heavily-forested until the 20th century ... foot affliction, remarked "Well that sticks out like Charlie's bunion" prompting Kephart to decide on that name ...
Tailor's Bunion
... Tailor's bunion, or Bunionette, is a condition caused as a result of inflammation of the fifth metatarsal bone at the base of the little toe ... It is mostly similar to a bunion (the same type of ailment affecting the big toe) ... It is called Tailor's Bunion because in past centuries, tailors sat cross-legged, and this was thought to cause this protrusion on the outside aspect of the foot ...
Charlies Bunion
... Charlies Bunion is a mountain in the Great Smoky Mountains of the Southeastern United States, characterized by a large boulder-like protrusion just below the summit on its otherwise-sheer northern face ... Charlies Bunion rises to an elevation of 5,565 feet (1,696 m) above sea level, and is situated along the state line between Sevier County, Tennessee and Swain County, North Carolina ...