Overview
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.
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
Pain or soreness. Inflamattion and redness. A burning sensation. Numbness on the side of the great toe. Other conditions which may occur secondary to bunions include calluses on the big toe, sore between the toes, ingrown toenails, and stiffness of the joint where the great toe attaches to the foot.
Diagnosis
A simple visual exam is all it will take for your doctor to determine whether you have a bunion. He or she may also ask you to move your big toe in order to ascertain your range of motion. Your doctor may also look for any inflammation, redness, or pain. X-rays can help your doctor determine the severity and cause of the bunion. Your doctor may also ask you questions about your footwear, the symptoms you are experiencing, and if other family members also suffer from the condition. All these factors will help him or her diagnose you properly.
Non Surgical Treatment
Wide toe box, bunion pads, orthotics, or a combination. Mild discomfort may lessen by wearing a shoe with a wide toe box or with stretchable material. If not, bunion pads purchased in most pharmacies can shield the painful area. Orthotics can also be prescribed to redistribute and relieve pressure from the affected articulation. If conservative therapy fails, surgery aimed at correcting abnormal bony alignments and restoring joint mobility should be considered. If the patient is unwilling to wear large, wider shoes to accommodate the bunion because they are unattractive, surgery can be considered; however, patients should be told that orthotic devices should be worn after surgery to reduce the risk of recurrence. For bursitis, bursal aspiration and injection of a corticosteroid are indicated. For osteoarthritic synovitis, oral NSAIDs or an intra-articular injection of a corticosteroid/anesthetic solution reduces symptoms. For hallux limitus or hallux rigidus, treatment aims to preserve joint mobility by using passive stretching exercises, which occasionally require injection of a local anesthetic to relieve muscle spasm. Sometimes surgical release of contractures is necessary.
Surgical Treatment
There are a number of different surgical procedures used to treat bunions. The type of surgery recommended for you will depend on the severity of the deformity. Your surgeon may use pins, wires or screws to hold the bones in place while they heal. Depending on the type of surgery you have, these may be left in your foot or removed later on. Some of the surgical procedures for bunions are described below. Osteotomy is the most commonly used and proven type of bunion surgery. Although there are many different types of osteotomy, they generally involve cutting and removing part of the bone in your toe. During the procedure, your surgeon will remove the bony lump and realign the bones inside your big toe. They'll also move your toe joint back in line, which may involve removing other pieces of bone, possibly from the neighbouring toes. A procedure called distal soft tissue realignment may be combined with an osteotomy. This involves altering the tissue in your foot to help correct the deformity and improve the stability and appearance of the foot.
Prevention
Shoes that possess tapering toe boxes should be avoided if you have a bunion, as narrow toe boxes will hasten the progression of your bunion deformity. In some cases, conservative measures, including switching to appropriate footwear, may not have the desired effect, and your podiatrist may recommend for you a surgical procedure known as a bunionectomy.
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.
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
Pain or soreness. Inflamattion and redness. A burning sensation. Numbness on the side of the great toe. Other conditions which may occur secondary to bunions include calluses on the big toe, sore between the toes, ingrown toenails, and stiffness of the joint where the great toe attaches to the foot.
Diagnosis
A simple visual exam is all it will take for your doctor to determine whether you have a bunion. He or she may also ask you to move your big toe in order to ascertain your range of motion. Your doctor may also look for any inflammation, redness, or pain. X-rays can help your doctor determine the severity and cause of the bunion. Your doctor may also ask you questions about your footwear, the symptoms you are experiencing, and if other family members also suffer from the condition. All these factors will help him or her diagnose you properly.
Non Surgical Treatment
Wide toe box, bunion pads, orthotics, or a combination. Mild discomfort may lessen by wearing a shoe with a wide toe box or with stretchable material. If not, bunion pads purchased in most pharmacies can shield the painful area. Orthotics can also be prescribed to redistribute and relieve pressure from the affected articulation. If conservative therapy fails, surgery aimed at correcting abnormal bony alignments and restoring joint mobility should be considered. If the patient is unwilling to wear large, wider shoes to accommodate the bunion because they are unattractive, surgery can be considered; however, patients should be told that orthotic devices should be worn after surgery to reduce the risk of recurrence. For bursitis, bursal aspiration and injection of a corticosteroid are indicated. For osteoarthritic synovitis, oral NSAIDs or an intra-articular injection of a corticosteroid/anesthetic solution reduces symptoms. For hallux limitus or hallux rigidus, treatment aims to preserve joint mobility by using passive stretching exercises, which occasionally require injection of a local anesthetic to relieve muscle spasm. Sometimes surgical release of contractures is necessary.
Surgical Treatment
There are a number of different surgical procedures used to treat bunions. The type of surgery recommended for you will depend on the severity of the deformity. Your surgeon may use pins, wires or screws to hold the bones in place while they heal. Depending on the type of surgery you have, these may be left in your foot or removed later on. Some of the surgical procedures for bunions are described below. Osteotomy is the most commonly used and proven type of bunion surgery. Although there are many different types of osteotomy, they generally involve cutting and removing part of the bone in your toe. During the procedure, your surgeon will remove the bony lump and realign the bones inside your big toe. They'll also move your toe joint back in line, which may involve removing other pieces of bone, possibly from the neighbouring toes. A procedure called distal soft tissue realignment may be combined with an osteotomy. This involves altering the tissue in your foot to help correct the deformity and improve the stability and appearance of the foot.
Prevention
Shoes that possess tapering toe boxes should be avoided if you have a bunion, as narrow toe boxes will hasten the progression of your bunion deformity. In some cases, conservative measures, including switching to appropriate footwear, may not have the desired effect, and your podiatrist may recommend for you a surgical procedure known as a bunionectomy.