n
Board Certified Podiatrists | Expert Foot & Ankle Care
(810) 206-1402 Patient Portal

Accessory Navicular Syndrome: The Extra Bone Causing Your Arch Pain

Medically reviewed by Dr. Tom Biernacki, DPM — Board-certified foot & ankle surgeon, 3,000+ surgeries performed. Updated April 2026 with current clinical evidence. This article reflects real practice experience from Balance Foot & Ankle Specialists in Howell and Bloomfield Hills, Michigan.

Quick Answer

Most foot and ankle problems respond to conservative care — proper footwear, supportive inserts, activity modification, and targeted stretching — within 4-8 weeks. Persistent pain beyond that window, or any symptom that prevents walking, warrants a podiatric evaluation to rule out fracture, tendon tear, or systemic cause.

Watch: Dr. Tom Biernacki, DPM

Play video

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

▶ Watch

Play video

Medically Reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatrist, Balance Foot & Ankle Specialists, Michigan. Last updated April 2026.

Insurance Accepted

BCBS · Medicare · Aetna · Cigna · United Healthcare · HAP · Priority Health · Humana · View All →

Ready to Get Back on Your Feet?

Same-week appointments available at both locations.

Book Your Appointment

(810) 206-1402

Watch: Accessory Navicular: Extra Bone & Arch Pain

Dr. Tom on accessory navicular syndrome — congenital extra bone, types, conservative to surgical treatment ladder.

Play video

Book Same-Week Appointment · (810) 206-1402

Accessory Navicular Support Kit

PT tendon loading is the main mechanism. Dr. Tom’s kit:

As an Amazon Associate, Balance Foot & Ankle earns from qualifying purchases. This supports our free patient education content.

Medial Post Insoles →

Reduces PT tendon strain.

Ankle Brace →

Limits pronation during flare.

FlexiKold Ice Pack →

Acute flare swelling.

Doctor Hoy’s Pain Gel →

Medial arch topical relief.

Related: Accessory Navicular Detail · PTTD Care · Book Same-Week Appointment

Book Same-Week Appointment →

Differential Diagnosis: What Else Could It Be?

Not every case of accessory navicular syndrome is straightforward. In our clinic we routinely rule out three look-alike conditions before confirming the diagnosis. If your symptoms don’t match the classic presentation, one of these may explain the pain — which is why physical exam matters more than self-diagnosis.

ConditionHow It Differs
Posterior tibial tendon dysfunctionPain along the tendon course with progressive flatfoot; may coexist.
Medial midfoot sprainLigamentous tenderness without a prominent bony bump.
Navicular stress fractureDorsal midfoot pain with impact; confirmed on MRI, not an accessory bone.

Red Flags — When to See a Podiatrist Now

Seek same-day evaluation at Balance Foot & Ankle if you notice any of the following:

  • Visible bony bump on the medial midfoot with redness
  • Collapsing arch in a child or adolescent
  • Pain preventing participation in sport
  • Failed 6 weeks of orthotic and activity modification

Call (810) 206-1402 or request an appointment. Our Howell and Bloomfield Hills offices reserve same-day slots for urgent foot and ankle issues.

In Our Clinic: What We See

Clinical perspective from Dr. Tom Biernacki, DPM — Balance Foot & Ankle, Howell & Bloomfield Hills, MI:

Accessory navicular syndrome shows up in active adolescents and sometimes adults with a visible medial bump. In our clinic the exam finding is tenderness directly over the ossicle and pain with resisted inversion. X-rays confirm the accessory bone; MRI shows whether the ossicle is inflamed. Most patients respond to custom orthotics, activity modification, and short-term boot immobilization over 6-12 weeks. When conservative care fails, a Kidner procedure — excising the ossicle and re-attaching the posterior tibial tendon — restores arch function. Dr. Biernacki counsels families to try orthotics for 6 weeks first; surgery when needed is predictable but usually preventable.

In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your your foot or ankle concern, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Hills offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Most Common Mistake We See

The most common mistake we see is: Waiting too long before seeking care. Fix: any foot pain lasting more than 4 weeks, or any sudden severe symptom, deserves a professional evaluation rather than more rest.

Warning Signs That Need Same-Day Care

Seek immediate evaluation at Balance Foot & Ankle if you experience any of the following:

  • Unable to bear weight
  • Severe swelling with skin colour change
  • Fever with foot pain (possible infection)
  • Diabetes plus any new foot symptom

Call (810) 206-1402 — same-day and next-day appointments at our Howell and Bloomfield Hills offices.

More Podiatrist-Recommended Plantar Fasciitis Essentials

Best Night Splint

Keeps fascia stretched overnight — the #1 intervention for morning heel pain.

Top Podiatrist-Recommended Insole

Deep heel cup + arch support unloads the plantar fascia all day.

Plantar Fasciitis Compression Sock

Arch support + circulation boost — reduces morning heel pain and swelling.

As an Amazon Associate, Balance Foot & Ankle earns from qualifying purchases. Product recommendations are based on clinical experience; prices and availability shown above update live from Amazon.

Accessory Navicular Ap Anatomy - Balance Foot & Ankle

When to See a Podiatrist

If morning heel pain has persisted more than 6 weeks, home care alone rarely fixes it. At Balance Foot & Ankle, we combine in-office ultrasound diagnostics, custom orthotics, and — when needed — shockwave or PRP to resolve plantar fasciitis that hasn’t responded to stretching and inserts. Most patients are walking pain-free within 4-8 weeks of starting a structured plan.

Call Balance Foot & Ankle: (810) 206-1402  ·  Book online  ·  Offices in Howell & Bloomfield Hills

Recommended Products for Flat Feet
Products personally used and recommended by Dr. Tom Biernacki, DPM. All available on Amazon.
Structured arch support that provides the structure flat feet are missing.
Best for: All shoe types
Dynamic arch support designed for runners with flat or low arches.
Best for: Running, high-impact sports
These products work best with professional treatment. Book an appointment with Dr. Tom for a personalized treatment plan.
Medical References
  1. Plantar Fasciitis: Diagnosis and Conservative Management (PubMed)
  2. Plantar Fasciitis (APMA)
  3. Diagnosis and Treatment of Plantar Fasciitis (PubMed / AAFP)
  4. Heel Pain (APMA)
This article has been reviewed for medical accuracy by Dr. Tom Biernacki, DPM. References are provided for informational purposes.

Recommended Products from Dr. Tom

Balance Foot & Ankle surgeons are affiliated with Trinity Health Michigan, Corewell Health, and Henry Ford Health — three of Michigan’s largest health systems.
📞 Call Now 📅 Book Now
} }) } } } } } }