Bunions are the result of a combination of genetic, environmental, and biomechanical factors. Some of the most common causes include:
- Genetics
If bunions run in your family, you may have inherited a foot structure that predisposes you to develop them, such as flat feet or overly flexible joints.
- Footwear Choices
Tight, narrow, or high-heeled shoes can exacerbate pressure on the toes and contribute to bunion formation. Shoes that squeeze the toes into unnatural positions are particularly problematic.
- Foot Structure and Biomechanics
Abnormal foot mechanics, such as overpronation (rolling the foot inward while walking), can increase stress on the MTP joint.
- Arthritis
Conditions like rheumatoid arthritis, which affect joint health and alignment, can increase the likelihood of bunions.
- Injuries
Trauma to the foot or toe joint may lead to misalignment and the eventual development of a bunion.
- Occupation or Activity
Jobs or activities that require prolonged standing, walking, or wearing restrictive footwear can increase the risk of bunions.