Common foot & ankle concerns we treat
- Pain that limits walking, lifting, or sleep
- Stiffness, swelling, or reduced range of motion
- Sports injuries: acute or overuse
- Arthritis or post-traumatic joint changes
- Conditions other doctors couldn't resolve
Accessory Navicular Syndrome
A painful extra bone near the arch
An accessory navicular is a small extra bone on the inside of the foot, present from birth in some people, usually painless, but sometimes symptomatic, especially in flat-footed patients. Same-day or next-day evaluations across eight LA-area offices.
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Board-certified surgeons and podiatrists across eight Los Angeles area neighborhoods.
Book a visitOr call (323) 264-7600
What sets LAOSS apart
- Same- or next-day appointments at eight Los Angeles-area offices
- On-site imaging; PT coordinated with your in-network provider
- Conservative-first care, surgery only when needed
- Board-certified specialists, not generalists
Key takeaways
- Accessory navicular syndrome is one of many foot & ankle conditions our specialists evaluate every day.
- Most patients improve with conservative care: a short period in a boot or cast, orthotics, and PT with your in-network provider.
- When a procedure is the right call, we explain every option, recovery timeline, and return-to-activity milestone.
- On-site imaging at most offices and same-day appointments across eight Los Angeles-area locations.
What is accessory navicular syndrome?
An accessory navicular is a small extra bone on the inside of the foot, present from birth in some people, usually painless, but sometimes symptomatic, especially in flat-footed patients. Symptoms can develop gradually or after a specific injury, so early evaluation matters when function starts to decline.
Most patients with accessory navicular syndrome improve with conservative care: a period of rest in a walking boot or cast, ice and anti-inflammatory medication, arch supports or orthotics, and physical therapy. When symptoms keep returning despite these measures, surgery to remove the extra bone and repair the tendon attachment is an option, as discussed below.
Below, we walk through the anatomy involved, the symptoms and causes we most often see, how we diagnose accessory navicular syndrome, and the full range of treatment options, from the simplest to the most involved.
Watch: Accessory Navicular Problems
An accessory navicular is an extra bone on the inner side of your foot. It's connected to the bone we call the "navicular," which helps form the foot's arch. Most people don't have an accessory navicular, and you can have one and not know it. But in some people, this extra bone causes problems.
Inside the foot & ankle.
The foot and ankle have 26 bones, more than 30 joints, and over 100 ligaments and tendons. The plantar fascia spans the bottom of the foot, the Achilles tendon anchors the calf to the heel, and the ankle is a hinge that handles every step you take. Most foot and ankle problems trace back to overload, alignment, or footwear that doesn't match the way your foot is built.
Symptoms and causes of accessory navicular syndrome
Common symptoms
- Pain along the inside of the foot near the arch
- A visible bony prominence on the inside of the foot
- Pain with activity or pressure from shoes
- Posterior tibial tendon irritation
Common causes
- Anatomic variant present from birth
- Sprain or twisting injury triggers pain
- Flat-footed mechanics overloading the area
- Tight or poorly fitting shoes
How we diagnose accessory navicular syndrome
You want answers, fast, and we're built to give them. Most patients leave their first LAOSS visit with a clear diagnosis and a written plan, not another referral chain.
Here's what your initial visit for accessory navicular syndrome typically looks like:
- Detailed history: when it started, what makes it better or worse, what you've already tried
- Focused exam of the foot & ankle: range of motion, stability, strength, specific provocation tests
- On-site imaging at most offices: X-ray for bone, ultrasound or MRI when soft-tissue detail is needed
- A written plan with options ranging from conservative care to surgical procedures, in plain English
Schedule your evaluation at the LAOSS office nearest you.
How we treat accessory navicular syndrome at LAOSS
Once we've confirmed the diagnosis, the next step is matching the right treatment to your situation. We start with the least-invasive option that fits, and escalate only when it doesn't.
Conservative care
Step 1Conservative care first
Non-surgical options designed to relieve pain, restore movement, and avoid the OR when possible.
- Rest in a walking boot or cast to calm the inflamed area
- Ice and anti-inflammatory medication
- Arch supports or custom orthotics to take stress off the area
- Shoe changes or padding to reduce pressure on the bony bump
- Physical therapy to strengthen the foot and ankle
Surgical care
When neededSurgical options when needed
Surgery is considered when pain keeps returning despite conservative care.
- Removal of the accessory navicular bone
- Reattachment or tightening of the posterior tibial tendon at the same surgery (Kidner procedure)
- Flatfoot correction at the same time in selected patients
- Cast or boot after surgery, followed by physical therapy
Why experience matters.
Why experience matters
Foot & ankle care is highly technique-dependent. Volume, training, and judgment together determine the outcome you actually feel six months later.
- Precise diagnosis from imaging and exam
- Conservative-first care that avoids unnecessary surgery
- Surgical technique refined over thousands of cases
- On-site imaging + coordinated PT through your in-network provider
The LAOSS approach
Our foot & ankle specialists move stepwise: start with the least-invasive option that fits your situation, escalate only when it doesn't.
- Same-day imaging at most offices
- PT coordinated in your insurance network
- Board-certified surgeons performing the procedures themselves
- Direct access to your specialist between visits
Am I a candidate?
If most of these match your situation, an evaluation with a foot & ankle specialist is the next step.
You may be a candidate if
These signs typically point toward an in-person evaluation with a foot & ankle specialist.
- Pain or stiffness in the foot & ankle that lasts more than a few days
- Swelling, instability, or noticeable change in function
- Symptoms that limit walking, lifting, sleep, or work
- Previous treatment that didn't fully resolve the problem
- Imaging or exam findings that suggest an underlying issue
What evaluation includes
Your first visit is built to give you an answer the same day, not just another referral.
- Detailed history: onset, mechanism, what makes it better or worse
- Hands-on exam focused on the affected joint or region
- On-site imaging at most offices (X-ray, ultrasound)
- Clear plan with options ranging from conservative to surgical
- Same-day or next-day scheduling for any follow-up tests
ImportantSeek urgent evaluation for sudden severe pain, numbness, progressive weakness, or any sign of infection (fever, increasing redness or swelling).
Your foot & ankle recovery roadmap.
Recovery is rarely a straight line, but a clear plan with measurable milestones makes the path predictable.
- Days 0 to 14
Right after care
In the first two weeks we focus on protecting the foot & ankle, calming inflammation, and restoring basic motion.
- Activity modification with clear do/don't guidance
- Ice, elevation, and pain control as needed
- Gentle range-of-motion within safe limits
- Follow-up scheduled to track healing
- Weeks 2 to 8
Rehabilitation
Targeted physical therapy rebuilds strength, mobility, and confidence in the foot & ankle.
- Progressive strengthening and neuromuscular work
- Manual therapy and soft-tissue treatment
- Sport- or job-specific movement re-training
- Coordinated PT through your in-network provider
- Months 2+
Long-term care
Once function is restored, the focus shifts to keeping you there, and catching any recurrence early.
- Return-to-activity plan with measured benchmarks
- Home program tailored to your sport or job
- Maintenance visits or imaging if symptoms change
- Direct line back to your specialist if needed
Risks & considerations
What to weigh before you decide.
We talk through the risks and benefits with every patient. Informed consent is a conversation, not a form.
General considerations
Every orthopedic intervention carries a small set of standard risks. We screen, prepare, and monitor for these on every patient.
- Infection (rare with modern technique and prophylaxis)
- Bleeding or bruising at the treatment site
- Reaction to anesthesia or medications
- Need for additional procedures in some cases
Foot and ankle considerations
Some risks are tied to the structures we're treating in the foot & ankle. We discuss these in detail at your visit so you can weigh them against the benefits.
- Temporary stiffness or weakness during recovery
- Incomplete pain relief in a small percentage of cases
- Nerve or vessel irritation near the treatment area
- Need for follow-up therapy to fully restore function
Meet our foot & ankle doctors in the Greater Los Angeles area
At LAOSS, our foot & ankle specialists are board-certified and treat these problems every day. From minimally invasive arthroscopic techniques to joint replacement and arthritis management, our physicians bring decades of experience to every case. We have cared for Los Angeles patients since 2007, with one goal for each: less pain, better movement, and a return to the activities you love.
Care for accessory navicular syndrome starts here
Don't let accessory navicular syndrome be something you just power through. With same- or next-day appointments at multiple Los Angeles locations, you'll never wait weeks or months for answers. The same team handles your diagnosis, treatment, and recovery. Whether you need a walking boot, physical therapy, or surgery, we plan it with you and coordinate each step.
Call or schedule online today to see a foot & ankle specialist in Los Angeles.
Common accessory navicular questions
- We start with a focused orthopedic exam and detailed history. X-rays are usually done in-office; MRI or ultrasound is ordered when soft-tissue detail is needed. Most patients leave the first visit with a clear diagnosis and a written plan.
Don't wait on pain.
Book a visit with a foot & ankle specialist at any of our eight Los Angeles-area offices.
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21 specialists · 8 offices
Greater Los Angeles
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