Overview
Causes
The main cause of bunions is a mechanical imbalance in the feet which is usually inherited. The mechanical imbalance is known as overpronation, where the feet roll in towards the arch and big toe. This added weight and stress transfer towards the big toe, causes instability in the structures of this area and a bunion develops.
Symptoms
Many people do not experience symptoms in the early stages of bunion formation. Symptoms are often most noticeable when the bunion gets worse and with certain types of footwear. These include shoes that crowd the toes and/or high-heeled shoes. When symptoms do occur, they may include physical discomfort or pain. A burning feeling. Redness and swelling. Possible numbness. Difficulty walking.
Diagnosis
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
Treatment of hallux valgus nearly always starts with adapting shoe wear to fit the foot. In the early stages of hallux valgus, converting from a shoe with a pointed toe to a shoe with a wide forefoot (or toe box) may arrest the progression of the deformity. Since the pain that arises from the bunion is due to pressure from the shoe, treatment focuses on removing the pressure that the shoe exerts on the deformity. Wider shoes reduce the pressure on the bunion. Bunion pads may reduce pressure and rubbing from the shoe. There are also numerous devices, such as toe spacers, that attempt to splint the big toe and reverse the deforming forces.
Surgical Treatment
This involves surgically correcting the deformity and can involve a variety of different methods. However, outcomes can be variable. This is very dependant of the amount of damage to the joint and the procedure used to correct it. Removal of the bunion is performed using different methods that are out of the scope of this article. Unfortunately, bunions can recur following surgery, and even if it surgery is successful, around 30% of patients still report existing difficulties.
Causes
The main cause of bunions is a mechanical imbalance in the feet which is usually inherited. The mechanical imbalance is known as overpronation, where the feet roll in towards the arch and big toe. This added weight and stress transfer towards the big toe, causes instability in the structures of this area and a bunion develops.
Symptoms
Many people do not experience symptoms in the early stages of bunion formation. Symptoms are often most noticeable when the bunion gets worse and with certain types of footwear. These include shoes that crowd the toes and/or high-heeled shoes. When symptoms do occur, they may include physical discomfort or pain. A burning feeling. Redness and swelling. Possible numbness. Difficulty walking.
Diagnosis
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
Treatment of hallux valgus nearly always starts with adapting shoe wear to fit the foot. In the early stages of hallux valgus, converting from a shoe with a pointed toe to a shoe with a wide forefoot (or toe box) may arrest the progression of the deformity. Since the pain that arises from the bunion is due to pressure from the shoe, treatment focuses on removing the pressure that the shoe exerts on the deformity. Wider shoes reduce the pressure on the bunion. Bunion pads may reduce pressure and rubbing from the shoe. There are also numerous devices, such as toe spacers, that attempt to splint the big toe and reverse the deforming forces.
Surgical Treatment
This involves surgically correcting the deformity and can involve a variety of different methods. However, outcomes can be variable. This is very dependant of the amount of damage to the joint and the procedure used to correct it. Removal of the bunion is performed using different methods that are out of the scope of this article. Unfortunately, bunions can recur following surgery, and even if it surgery is successful, around 30% of patients still report existing difficulties.
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