Bunions (sometimes referred to as Hallux abducto valgus) are enlargements of the inner portion of the metatarsophalangeal (MTP) joint at the base of your big toe. More commonly, they are described as a bump on the side of the big toe. The foot bunion is the result of changes that occur in the framework of the bones at the front of your foot. Instead of pointing straight ahead, your big toe begins to lean into your second toe, throwing the bones out of alignment. Bunions are progressive, meaning you will not just wake up one day and find a visible bump (unless it was caused by a bug bite or something of that nature). Bunions are generally attributed to genetics and improper footwear. It may take years for a bunion to fully develop and begin to show symptoms. Some people may never experience symptoms at all. Bunions may begin to form during one?s teenage years, but they usually occur in people aged 20-30. Women are three times more likely than men to have bunions.
No single cause or set of causes for bunions has been identified, although gender-women develop them more frequently than men-and heredity play a role. In addition, the foot gradually widens with age as the ligaments that connect the bones in the forefoot become more lax. Contrary to what many people believe, ill-fitting footwear is not the cause of bunions. In fact, bunions are found in populations all over the world, including among those who never wear shoes. Shoes that are too tight can, however, contribute to the progression of the condition. Bunions are often bilateral, that is, appearing in both feet. Although bunions are usually seen in people who are middle-aged or older, there are adolescents who are diagnosed with the condition, usually the result of a congenital problem.
Look for an angular, bony bump on the side of the foot at the base of the big toe. Sometimes hardened skin or a callus covers this bump. There's often swelling, redness, unusual tenderness, or pain at the base of the big toe and in the ball of the foot. Eventually, the area becomes shiny and warm to the touch. Seek medical advice if you have persistent pain when walking normally in otherwise comfortable, flat-soled shoes, you may be developing a bunion, bursitis, or a bone spur in your foot.
Physical examination typically reveals a prominence on the inside (medial) aspect of the forefoot. This represents the bony prominence associated with the great toe joint ( the medial aspect of the first metatarsal head). The great toe is deviated to the outside (laterally) and often rotated slightly. This produces uncovering of the joint at the base of the big toe (first metatarsophalangeal joint subluxation). In mild and moderate bunions, this joint may be repositioned back to a neutral position (reduced) on physical examination. With increased deformity or arthritic changes in the first MTP joint, this joint cannot be fully reduced. Patients may also have a callus at the base of their second toe under their second metatarsal head in the sole of the forefoot. Bunions are often associated with a long second toe.
Non Surgical Treatment
Technically, you can only ?fix a bunion? with surgery, but many patients don't need it to get symptom relief. In its early stages, the progression of the bunion deformity can often be dramatically slowed. Removing pressure from the bunion area and balancing the tendon and ligament alignment are the primary goals of mild bunion treatment. For example, it is important to wear shoes that have sufficient room in the toe area to accommodate the bunion - that means softer leather shoes to mold to the deformity and platform type heels for better foot and arch support. Your doctor may also advise the use of pads to protect the bunion from shoe pressure. Customized shoe inserts, called orthotics are made exclusively for your foot and are often used to correct the alignment of the arch and big toe joint. In some cases, physicians also use anti-inflammatory creams around the bunion.
Surgical treatment for bunion deformities usually involves an osteotomy, a procedure in which a cut or cuts are made in the affected bone or bones to restore proper alignment. Different techniques are used depending on the type of deformity; selection is guided by the degree of deformity present and the goals of preventing recurrence and achieving the most rapid recovery possible. Some of the more common procedures are. The distal chevron osteotomy: a procedure in which a v-shaped cut is made at the toe end of the first metatarsal. This surgery is appropriate for individuals who have a congruent deformity, one in which there is a painful prominence at the base of the toe, but the joint is still well aligned. Absorbable pins are placed in the metatarsal to maintain alignment during healing. The Scarf or Ludloff osteotomy: in this procedure, a more extensive cut is made higher up in the metatarsal to correct a moderate incongruent deformity and metatarsus primus varus. Screws are used to maintain alignment during healing. The crescent osteotomy: a procedure in which a curved cut is made at the base of the metatarsal is appropriate for patients with more severe metatarsus primus varus and, therefore, require more correction. Screws or pins are used to maintain alignment. The Lapidus procedure: individuals who have severe deformity, instability of the first ray, with a loose metatarsal-tarsal joint (located in the mid-foot) may not get enough correction from an osteotomy alone. Moreover, the looseness of the joint may lead to recurrence or be causing pain on the ball of the foot because the first metatarsal is floating up, allowing for excessive weight to go to adjacent metatarsals (commonly the second and the third). In such cases, the metatarsal-tarsus joint is fused to provide lasting stability. Screws are used to maintain alignment. The loss of motion from the fusion is small and does not significantly limit motion of the big toe. Patients undergoing bunion surgery are given an ankle block that anesthetizes the foot from the ankle down. Depending on individual preference, a sedative may be given as well and the patient can be as sedated as they wish. All bunion surgeries may be done on a same-day basis, eliminating the need for hospitalization.