What is it?
An accessory navicular is an extra small bone or piece of cartilage on the inner side of the foot, just above the arch, within the tibialis posterior tendon. Many people have one without any problems, but it can become painful.
What causes it?
- Being born with the extra bone.
- Injury, overuse or pressure from shoes, which can irritate it.
Common symptoms
- A bony bump on the inner side of the foot.
- Redness, swelling and tenderness over the bump.
- Pain during or after activity, sometimes with a flat foot.
How is it diagnosed?
Diagnosis is by examination and X-ray. An MRI scan can show whether the bone is irritated.
Things you can do now
- Wear shoes that don't press on the inner side of the foot
- Use padding over the bump
- Try supportive insoles
- Rest from sport while it is painful
Treatment
Treatment is tailored to your individual needs, symptoms and goals. Depending on your situation, it may include rest, a boot for a period, insoles, changes to footwear, physiotherapy and surgery to remove the extra bone and reattach the tendon.
Mr Jeyaseelan will talk you through the options that are right for you at your consultation.
When to see a specialist
- Pain on the inner side of the foot persists despite footwear changes
- It is stopping you from playing sport
- The foot is also flattening
What to expect
Most cases settle with rest, insoles or a short period in a boot. Surgery to remove the extra bone and reattach the tendon is effective when symptoms persist.
Common questions
Where can I see a specialist about accessory navicular in London?
Mr Lucky Jeyaseelan, a consultant orthopaedic surgeon who specialises only in the foot and ankle, sees private and insured patients with accessory navicular at Align Orthopaedics on Harley Street, The London Clinic on Devonshire Place, HCA London Bridge Hospital, HCA UK at The Shard, HCA UK City of London on Old Broad Street and The Holly Hospital in Buckhurst Hill, Essex. See all clinic locations or request an appointment.
Do I need a GP referral?
Self-funding patients can book directly, though a GP letter is helpful. Most insurers need a GP referral before they authorise your consultation, so check with yours first.
This information is general and is not a substitute for a medical consultation. Your diagnosis and treatment plan will be tailored to you.