If you’re feeling pain under the ball of your foot – especially beneath your big toe – you might be dealing with a condition known as sesamoiditis.
It’s a common but often overlooked cause of foot pain, and despite involving very small bones, it can cause significant discomfort when walking, running, or even standing.
At Trevor Lane Podiatry, we regularly treat patients from the Redlands and surrounding areas, who are experiencing pain linked to the foot sesamoid bones.

What Are Sesamoid Bones?
Sesamoids are tiny bones embedded within tendons. In the foot, they sit underneath the joint of the big toe, helping the tendon move smoothly and absorb pressure when you push off during walking.
Interestingly, sesamoid bones also exist in the hands – but as podiatrists, we focus on treating foot and lower limb conditions only.
Because the sesamoids sit directly under a high-pressure area of the foot, they can become irritated and inflamed. When this happens, the condition is known as sesamoiditis.
What Causes Sesamoiditis?
Sesamoiditis usually develops from repeated stress or overload of the forefoot. It’s most prevalent in athletes, dancers, and people with high arched feet or other specific foot structures.
Common causes include:
- High-impact activities like running, dancing, or sport
- Wearing high heels or thin-soled shoes
- Sudden increases in training or activity
- Foot structure issues that place excess pressure on the forefoot
In some cases, the problem may progress beyond inflammation and lead to a cracked sesamoid bone (a sesamoid stress fracture), which can cause more severe pain.
Symptoms of Sesamoiditis
If you have sesamoiditis, you may notice:
- Pain under the big toe joint
- Tenderness in the ball of the foot
- Swelling or bruising in the area
- Difficulty pushing off when walking or running
Pain often develops gradually, but may become persistent if left untreated.
There are also other conditions that can affect the sesamoid bones and surrounding structures, such as arthritis, fractures, and bone collapse (Avascular Necrosis). Sometimes these may have similar symptoms, but an experienced podiatrist will be able to diagnose properly and put you onto the appropriate treatment.
Sesamoiditis Treatment Options
The good news is that most cases respond well to conservative sesamoiditis treatment when addressed early. While the specifics will depend on your individual circumstances, thist may include:
- Activity modification to reduce pressure on the forefoot
- Sesamoiditis taping to offload the affected area
- Footwear advice and cushioning strategies
- Custom orthotics to redistribute pressure
- Strengthening and mobility exercises
- Lifestyle advice and preventative strategies to avoid recurrence
- In severe cases that don’t respond to other treatment, referral for surgery
We may also recommend Foot Mobilisation Therapy (FMT). Trevor Lane was the first podiatrists in the Redlands to offer this hands-on treatment, which focuses on improving joint mobility and foot function.
When to Seek Help
Pain under the ball of your foot isn’t something you should ignore – particularly if it’s affecting your daily activities. If it hasn’t got better within two weeks despite self-care measures like rest, ice, and changing footwear – it’s time to see your local podiatrist.
If you’re in the Redlands or surrounding areas and suspect sesamoiditis or a possible cracked sesamoid bone, book your appointment with Trevor Lane Podiatry today.
















