Have you ever looked down at your foot and wondered what that bump beside your big toe actually is? You might notice it even more when it starts to swell, ache, and rub against your shoes, making you question why it’s even there in the first place and why it has suddenly become uncomfortable. This bump might be a bunion, medically known as hallux valgus. It’s a common foot condition that develops as the big toe gradually shifts towards the smaller toes, causing the joint at its base to become more prominent.
So, what causes this change in the first place? There’s rarely one single explanation, as several factors can influence how a bunion develops over time. However, before looking at the everyday pressures that might affect it, it helps to first understand why some feet are more susceptible than others, starting with genetics and foot structure.
Why are Bunions Hereditary?
For some, the tendency to develop bunions can run in the family. This doesn’t mean you will definitely get a bunion just because a parent or close family member has one. However, genetics can influence certain characteristics of your feet that might make a bunion more likely to develop over time. These can include:
- Flat feet or low arches – These can affect how weight is distributed across the foot and how it moves when you walk.
- Loose ligaments or greater joint movement – With less stability around the joints, the big toe might gradually move out of its normal position.
- Differences in bone shape or alignment – The natural shape and position of the bones can influence how pressure passes through the big toe joint.
Even with these inherited features, genetics is only part of the explanation. How your foot moves and bears weight also matters, which brings us to the role that foot mechanics can play in bunion development.
What Role Does Foot Mechanics Play in Bunions?
This is where the way your foot moves starts to matter. While its structure can influence its shape and alignment, the way it functions affects how weight is distributed as you stand, walk, jump, change direction, or push off through your toes. When these forces aren’t shared evenly, the big toe joint might take on more stress than it should.
Over time, the repeated stress can place extra strain on an area that’s already more prone to developing a bunion. Yet, how your foot moves is only part of what it deals with each day. Footwear, activity levels, and long periods spent on your feet can all add to the forces acting on the joint, which is where everyday factors start to matter too.
Can Everyday Habits Make Bunions Worse?
If your foot is already more prone to developing a bunion, some everyday habits might place additional pressure around the big toe joint. What you wear is one of the most obvious examples, especially when your shoes regularly squeeze the toes or shift more weight towards the front of the foot.
Footwear and Bunions
Shoes are often blamed for bunions, although footwear alone is unlikely to explain why one develops. Narrow toe boxes can crowd the toes, while high heels shift more weight towards the forefoot. If a bunion is already present, tighter shoes can also rub against the area and make swelling or pain more noticeable.
However, footwear isn’t the only everyday source of repeated pressure on your feet.
Sport, Work, and Repeated Loading
Sports that involve jumping, changing direction, or repeatedly pushing off through the toes can place greater demands on the forefoot. Likewise, spending long periods standing or walking means your feet are bearing weight for longer, which might make pressure around an existing bunion more noticeable.
Over time, repeated loading can add to the strain around the big toe joint, particularly in a foot that’s already prone to bunions. Still, everyday habits are only part of the explanation, as previous injuries, changes that come with age, and certain joint conditions might also play a role.
What Other Factors Might Play a Role in Bunions?
Beyond genetics, movement, and everyday habits, a few other factors might also be linked to bunions. These include:
- Previous foot injuries – Depending on which structures are affected, a past injury might change how the foot or big toe joint handles load.
- Age and changes over time – Bunions are more common with increasing age, although this doesn’t mean ageing itself is the cause.
- Inflammatory joint conditions – Rheumatoid arthritis (RA) or lupus can involve the joints and surrounding tissues, with inflammation adding to the swelling and pain around the big toe.
Because these factors can vary from person to person, there isn’t always one clear reason why a bunion develops.
Even so, persistent big toe pain shouldn’t be ignored. Ongoing pain might indicate that the bunion or another issue around the toe is becoming more symptomatic. An assessment by an orthopaedic specialist can help identify what’s causing the discomfort and whether further care might be needed.
Is Your Bunion Starting to Affect Your Daily Activities?
If your bunion is becoming swollen or painful, making shoes harder to wear, or beginning to affect walking and daily activities, it’s worth having it assessed. At Oxford Orthopaedics, a specialist assessment can look at the alignment of your foot and big toe joint, the symptoms you’re experiencing, and whether further imaging might help. Based on these findings and how the bunion is affecting your movement or comfort, Dr James Siow can advise on the options best suited to your condition and needs. These might include footwear adjustments, other conservative measures, or minimally invasive bunion surgery where appropriate. If your bunion is becoming more noticeable or starting to limit what you can do comfortably, please contact the clinic to book an appointment.
