Bunion:
A bunion (hallux valgus) is a sometimes painful
structural deformity of the bones and the joint between
the foot and big toe.
A bunion is an enlargement of bone or tissue around
the joint at the base of the big toe (metatarsophalangeal
joint). The big toe may turn in toward the second
toe (displacement), and the tissues surrounding the
joint may be swollen and tender.
Today the term usually is used to refer to the pathological
bump on the side of the great toe joint. The bump
is the swollen bursal sac and/or an osseous (bony)
deformity that has grown on the mesophalangeal joint
(where the first metatarsal bone and hallux meet.
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