Overview
The foot is made up of many small bones that sit perfectly together forming many joints. The big toe joint comprises of the first metatarsal and the proximal (close) phalanx of the toe. A bunion forms when base of the toe (first metatarsal) drifts away from the second metatarsal. The 1st metatarsal rotates and drops and so no longer sits in its correct alignment. The tip of the first toe then rotates and drifts inwards. Overtime, under the continuing stress of this altered position of the joint and the irritation that this causes, the joint can become inflamed.
Causes
Bunions are not inherited, but do tend to run in families. What is inherited is the poor or faulty foot type, that mechanically can lead to the instability around the joint that will eventually lead to bunions, how soon, how quickly and how bad they are or become is assumed to be very dependant on the footwear. A number of other factors are known to play a role in the cause of bunions and hallux valgus. Bunions can follow foot injuries and develop in those with neuromuscular problems. Those with flat feet or pronated feet appear to be more prone to the instability about the joint and have a higher incidence of bunions. Some activities (eg ballet dancing) puts added pressure on the joint and may increase the chance of bunions developing.
Symptoms
Audible clicking (called ?crepitus?) and/or stiffness in the affected joint which indicates that the joint surfaces are rubbing together improperly. Inflammation, degeneration of the surfaces of the joint, deformity (including bone growth at the joint line and displacement of the toe) and ultimately, loss of range of motion in the joint. Pain at the side and top of the joint that worsens with walking and physical activity.
Diagnosis
Your doctor can identify a bunion by examining your foot. Watching your big toe as you move it up and down will help your doctor determine if your range of motion is limited. Your doctor will also look for redness or swelling. After the physical exam, an X-ray of your foot can help your doctor identify the cause of the bunion and rate its severity.
Non Surgical Treatment
The initial treatment of a bunion should be non-operative. Symptoms can often be greatly improved with simple non-operative interventions. Non-operative treatment may include properly fitted shoes, Properly fitting comfort shoes with a wide non-constrictive toe box, especially one that is made out of a soft material such as leather, can be quite helpful in reducing the irritation over the prominent bunion. In some instances, it is helpful to have a shoemaker stretch the inside aspect of the shoe. Jamming a foot with a bunion into a constrictive shoe will likely lead to the development of uncomfortable symptoms. Bunion pads, Medial bunion pads may also be helpful in decreasing the symptoms associated with the bunion. These pads can be obtained at many drugstores. Essentially, they serve to lessen the irritation over the medial prominence and, thereby, decrease the associated inflammation This should be combined with comfortable non-constrictive shoes. A toe spacer placed between the great toe and the second toe can help to reduce the bunion deformity and, thereby, decrease the stretch on the medial tissue and the irritation associated with the bunion. Toe spacers can be obtained at most drug stores or online. Soft shoe inserts. Over-the-counter accommodative orthotics may also help bunion symptoms. This product is particularly helpful if bunion symptoms include pain that is under the ball of the foot. Orthotics with a slight medial longitudinal arch may be helpful for patients that have associated flatfoot deformity. These can be purchased at many sports stores, outdoors stores, or pharmacies. Bunion splints have often been used to treat the symptoms associated with hallux valgus. These splints are typically worn at night in an effort to reduce the bunion deformity. There is no evidence to suggest that these splints decrease the rate at which bunion deformities occur. There is also no evidence that clearly supports their effectiveness. However, some patients report good relief with the use of these splints.
Surgical Treatment
There is no "standard" bunion, but rather a complex range of joint, bone, muscle, tendon and ligament abnormalities that can cause variation in each bunion's make-up. As a result, there are a broad variety of surgical techniques for dealing with bunions. Most surgical procedures start with a simple bunionectomy, which involves excision of swollen tissues and removal of the enlarged boney structure. While this may remove the troublesome tissues, however, it may not correct other issues associated with the bunion. The surgeon may also need to tighten or loosen the muscles, tendons and ligaments around the MTP joint. Realign the bone by cutting it and shifting its position (a technique called osteotomy), realigning muscles, tendons and ligaments accordingly. Use screws, wires or plates to hold the joint surfaces together until they heal. Reconstruct a badly damaged joint or replace it with an artificial implant.
The foot is made up of many small bones that sit perfectly together forming many joints. The big toe joint comprises of the first metatarsal and the proximal (close) phalanx of the toe. A bunion forms when base of the toe (first metatarsal) drifts away from the second metatarsal. The 1st metatarsal rotates and drops and so no longer sits in its correct alignment. The tip of the first toe then rotates and drifts inwards. Overtime, under the continuing stress of this altered position of the joint and the irritation that this causes, the joint can become inflamed.
Causes
Bunions are not inherited, but do tend to run in families. What is inherited is the poor or faulty foot type, that mechanically can lead to the instability around the joint that will eventually lead to bunions, how soon, how quickly and how bad they are or become is assumed to be very dependant on the footwear. A number of other factors are known to play a role in the cause of bunions and hallux valgus. Bunions can follow foot injuries and develop in those with neuromuscular problems. Those with flat feet or pronated feet appear to be more prone to the instability about the joint and have a higher incidence of bunions. Some activities (eg ballet dancing) puts added pressure on the joint and may increase the chance of bunions developing.
Symptoms
Audible clicking (called ?crepitus?) and/or stiffness in the affected joint which indicates that the joint surfaces are rubbing together improperly. Inflammation, degeneration of the surfaces of the joint, deformity (including bone growth at the joint line and displacement of the toe) and ultimately, loss of range of motion in the joint. Pain at the side and top of the joint that worsens with walking and physical activity.
Diagnosis
Your doctor can identify a bunion by examining your foot. Watching your big toe as you move it up and down will help your doctor determine if your range of motion is limited. Your doctor will also look for redness or swelling. After the physical exam, an X-ray of your foot can help your doctor identify the cause of the bunion and rate its severity.
Non Surgical Treatment
The initial treatment of a bunion should be non-operative. Symptoms can often be greatly improved with simple non-operative interventions. Non-operative treatment may include properly fitted shoes, Properly fitting comfort shoes with a wide non-constrictive toe box, especially one that is made out of a soft material such as leather, can be quite helpful in reducing the irritation over the prominent bunion. In some instances, it is helpful to have a shoemaker stretch the inside aspect of the shoe. Jamming a foot with a bunion into a constrictive shoe will likely lead to the development of uncomfortable symptoms. Bunion pads, Medial bunion pads may also be helpful in decreasing the symptoms associated with the bunion. These pads can be obtained at many drugstores. Essentially, they serve to lessen the irritation over the medial prominence and, thereby, decrease the associated inflammation This should be combined with comfortable non-constrictive shoes. A toe spacer placed between the great toe and the second toe can help to reduce the bunion deformity and, thereby, decrease the stretch on the medial tissue and the irritation associated with the bunion. Toe spacers can be obtained at most drug stores or online. Soft shoe inserts. Over-the-counter accommodative orthotics may also help bunion symptoms. This product is particularly helpful if bunion symptoms include pain that is under the ball of the foot. Orthotics with a slight medial longitudinal arch may be helpful for patients that have associated flatfoot deformity. These can be purchased at many sports stores, outdoors stores, or pharmacies. Bunion splints have often been used to treat the symptoms associated with hallux valgus. These splints are typically worn at night in an effort to reduce the bunion deformity. There is no evidence to suggest that these splints decrease the rate at which bunion deformities occur. There is also no evidence that clearly supports their effectiveness. However, some patients report good relief with the use of these splints.
Surgical Treatment
There is no "standard" bunion, but rather a complex range of joint, bone, muscle, tendon and ligament abnormalities that can cause variation in each bunion's make-up. As a result, there are a broad variety of surgical techniques for dealing with bunions. Most surgical procedures start with a simple bunionectomy, which involves excision of swollen tissues and removal of the enlarged boney structure. While this may remove the troublesome tissues, however, it may not correct other issues associated with the bunion. The surgeon may also need to tighten or loosen the muscles, tendons and ligaments around the MTP joint. Realign the bone by cutting it and shifting its position (a technique called osteotomy), realigning muscles, tendons and ligaments accordingly. Use screws, wires or plates to hold the joint surfaces together until they heal. Reconstruct a badly damaged joint or replace it with an artificial implant.