A bunion looks like a bump on the inside of the foot where the big toe joins the foot. Over time, the bunion gets worse. The big toe starts to lean toward neighboring toes instead of pointing straight ahead. (The scientific name for this is hallux valgus or hallux abducto valgus.) The bump is a sign that the bones of the foot are out of alignment. While shoes with high heels or pointed toes may cause the joint to ache, they don't cause bunions. Most often they are due to an inherited foot structure. The tendons and ligaments that hold bones and muscles together at the joint are not working as they should. This structure makes it more likely that a person will develop a bunion.
Bunions result from the long bone in the foot (metatarsal) and the big-toe bone becoming misaligned. The causes are likely to be a combination of genetics, wearing ill-fitting shoes, and the way that we walk or run. Arthritis sufferers are also prone to bunions.
Your bunion may not cause any symptoms. Or you may have pain in your big toe, red or irritated skin over the bunion, and swelling at the base of the big toe. The big toe may point toward the other toes and cause problems in other toes, such as hammer toe . A bunionette can cause similar symptoms at the base of the little toe.
Orthopaedic surgeons diagnose bunions on the basis of physical examination and weight bearing x-rays. Two angles are assessed, the intermetatarsal angle, that is between the first and second metatarsals (the bones that lead up to the base of the toes). If this angle exceeds 9? (the angle found in the healthy foot) it is abnormal and referred to as metatarsus primus varus. the hallux valgus angle, that is, the angle of the big toe as it drifts toward the small toe. An angle that exceeds 15? is considered to be a sign of pathology.
Non Surgical Treatment
Padding with a number of different materials (eg felt) to reduce pressure on the painful prominence of the bunion. Physical therapy can be used to help with the symptoms and improve the range of motion (this is particularly helpful if the pain is coming from inside the joint, rather than from shoe pressure). Manipulation of the joint can be used to help with this (manipulation will never correct the alignment of the joint). Any corns and calluses that are causing symptoms should be treated. The correct fitting of footwear is essential for anyone who is serious about doing something about their bunions and hallux valgus. It may be possible to have your shoes stretched over the area of the bunion to also relieve pressure. Foot orthotics may be useful in helping with the instability about the joint. They may be more helpful if there are other symptoms in the foot as well, as their use in "treating" bunions is controversial. They may play a role in slowing progression and in the prevention of bunions developing again after surgical correction. Exercises can be important in maintaining the mobility of the joint in those with bunions, this is especially important for the arthritic type pains that may be originating from inside the joint and for the prevention of these painful symptoms in the future.
Arthrodesis involves fusing together two bones in your big toe joint (metatarsophalangeal joint). The procedure is usually only recommended for people with severe deformities of the big toe joint, which make it too difficult for doctors to completely fix the joint, or when there's advanced degeneration of the joint. After arthrodesis, the movement of your big toe will be severely limited and you won't be able to wear high heels. An excision arthroplasty involves removing the bunion and the toe joint. A false joint is created by scar tissue that forms as a result of the operation. The procedure involves pinning the joint in place with wires, which will be removed around three weeks after surgery is carried out. An excision arthroplasty can only be used in certain circumstances, and is usually reserved for severe, troublesome bunions in elderly people.