A bunion is a deformity of the metatarsophalangeal (MTP) joint at the base of the big toe. A bunion develops when the first metatarsal bone of the foot turns outward and the big toe points inward (toward the other toes), causing the joint to jut out. A bunion is most likely to develop when susceptible feet are repeatedly squeezed into narrow, pointed-toe footwear. The big toe pushes against the other toes, sometimes diving over or under them. As a result, the base of the big toe ? the metatarsophalangeal (MTP) joint ? juts or angles out from the foot.
Bunions can be caused by the following factors. Hereditary (especially via the female line). Rolling in (pronation) of the feet. Walking with turned out feet. Weakness of muscles controlling the big toe. Weakness of intrinsic muscles of the feet. Leaning on the big toe in a tendu, especially to second or derri?re. Reduced mobility of the big toe when on demi-pointe. Restricted pointe range.
While bunions may be considered cosmetically undesirable, they are not necessarily painful. In cases where the individual has minor discomfort that can be eased by wearing wider shoes made of soft leather and/or with the aid of spacers-padding placed between the toes to correct alignment-further treatment may not be necessary. (Anti-inflammatory agents can be used to alleviate temporary discomfort at the site of the bursa.) For those who continue to experience pain on a daily basis and who cannot wear most types of shoe comfortably, surgical treatment may be the best choice.
Clinical findings are usually specific. Acute circumferential intense pain, warmth, swelling, and redness suggest gouty arthritis (see Gout) or infectious arthritis (see Acute Infectious Arthritis), sometimes mandating examination of synovial fluid. If multiple joints are affected, gout or another systemic rheumatic disease should be considered. If clinical diagnosis of osteoarthritic synovitis is equivocal, x-rays are taken. Suggestive findings include joint space narrowing and bony spurs extending from the metatarsal head or sometimes from the base of the proximal phalanx. Periarticular erosions (Martel sign) seen on imaging studies suggest gout.
Non Surgical Treatment
This is probably the most important step. Wearing the right footwear can help reduce stress on a minor deformity and reduce the likelihood of it progressing. Recommendations are that the forefoot easily fits within the width of the shoe and there is adequate cushioning and arch support. Soft materials such as smooth leather, suede or fabric will also help to reduce irritation to the area. The podiatrist plays an invaluable role in managing patients with bunions. This is because they can offer a number of options to the patient that can help relieve pain and reduce the severity of the deformity. They can also reduce pressure on skin lesions that develop as a result of the biomechanical changes. Podiatrists can prescribe customised orthotic devices that help reduce the stress on a bunion and control biomechanical factors which cause them. These may be used in conjunction with bunion splints or cushions to further offload the area. Evidence has shown a significant reduction in pain with the use of customized orthotic devices.
Procedures are designed and chosen to correct a variety of pathologies that may be associated with the bunion. For instance, procedures may address some combination of removing the abnormal bony enlargement of the first metatarsal, realigning the first metatarsal bone relative to the adjacent metatarsal bone, straightening the great toe relative to the first metatarsal and adjacent toes, realigning the cartilagenous surfaces of the great toe joint, addressing arthritic changes associated with the great toe joint, repositioning the sesamoid bones beneath the first metatarsal bone, shortening, lengthening, raising, or lowering the first metatarsal bone, and correcting any abnormal bowing or misalignment within the great toe. Connecting two parallel long bones side by side by Syndesmosis Procedure. At present there are many different bunion surgeries for different effects. The age, health, lifestyle and activity level of the patient may also play a role in the choice of procedure. Traditional bunion surgery can be performed under local, spinal or general anesthetic. In the case of laser surgery, a narcotic analgesic is typically used. The trend has moved strongly toward using the less invasive local anesthesia over the years. A patient can expect a 6- to 8-week recovery period during which crutches are usually required for aid in mobility. An orthopedic cast is much less common today as newer, more stable procedures and better forms of fixation (stabilizing the bone with screws and other hardware) are used. Hardware may even include absorbable pins that perform their function and are then broken down by the body over the course of months.