What is hallux valgus deformity?
Hallux valgus, commonly known as a bunion, is a foot deformity involving the big toe joint. It occurs when the big toe begins to deviate inward towards the second toe, causing the joint at the base of the big toe to stick out and form a bony bump. This condition can lead to significant discomfort and other complications if not managed properly.
Types
Although hallux valgus generally refers to the deviation of the big toe, the severity and angle of deviation can vary:
- Mild: The big toe is slightly deviated. Non-operative treatment options for mild hallux valgus include insoles, footwear modification, and other conservative therapies for relieving symptoms and evaluating the progression of the deformity.
- Moderate: There is a noticeable deviation that may start to affect walking.
- Severe: The big toe significantly overlaps or underlaps the second toe, and the bunion is large and painful.
Causes
The specific cause of hallux valgus deformity is often multifactorial, involving a combination of genetic and environmental factors:
- Genetic predisposition: Many individuals with bunions have a family history of the condition.
- Footwear: Tight, narrow, or high-heeled shoes can exacerbate the development of bunions.
- Foot structure and biomechanics: Abnormal foot mechanics, such as flat feet or an abnormal gait, can increase the risk.
Risk factors for hallux valgus
Certain factors increase the likelihood of developing hallux valgus:
- Gender: Women are more prone to bunions, possibly due to footwear styles.
- Age: The risk increases with age.
- Arthritis: Conditions like rheumatoid arthritis can increase susceptibility.
Symptoms
Symptoms of hallux valgus include:
- Visible bump: The most obvious sign is the bump itself, which can become red, swollen, or painful.
- Pain and discomfort: Often aggravated by pressure from shoes or prolonged activity.
- Restricted movement: The toe’s mobility may decrease over time.










