Medically reviewed by Dr. Tom Biernacki, DPM · Board-Certified Podiatric Surgeon · Last reviewed: April 2026 · Editorial Policy
Quick Answer
Posterior Tibial Tendon Dysfunction (PTTD): The Hidden Cause relates to tendon injury — typically caused by overuse or sudden strain. Most patients improve in 6-12 weeks with conservative care. Same-week appointments in Howell + Bloomfield Twp: (810) 206-1402.
Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.
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Medically Reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatrist, Balance Foot & Ankle Specialists, Michigan. Last updated April 2026.
Posterior tibial tendon dysfunction (PTTD) is the leading cause of adult-acquired flatfoot deformity. The posterior tibial tendon is the main dynamic support of the medial arch — when it degenerates, the arch progressively collapses, causing a cascade of pain and deformity that can ultimately require complex reconstructive surgery if not caught early.
What Is the Posterior Tibial Tendon?
The posterior tibial tendon runs behind the medial malleolus (inner ankle bone) and attaches to the navicular bone on the inner midfoot. It performs two critical functions: (1) inverting and supporting the arch during weight-bearing, and (2) locking the midfoot during push-off to create a rigid lever for propulsion. When this tendon fails, the foot can no longer maintain its arch under load.
Stages of PTTD
PTTD is classified into 4 stages with progressively more severe deformity and increasingly complex treatment requirements:
- Stage 1 — Tendon inflammation (tendinitis) with no deformity; pain and swelling behind the medial ankle; treated conservatively
- Stage 2 — Partial tendon tear with flexible flatfoot deformity; hindfoot valgus (heel rolls out), forefoot abduction; “too many toes sign”; still correctable with surgery
- Stage 3 — Rigid flatfoot deformity with hindfoot arthritis; cannot manually correct the flat foot
- Stage 4 — Tibiotalar joint involvement; severe deformity with ankle arthritis
Who Gets PTTD?
PTTD most commonly affects middle-aged women (40–60 years), people who are overweight, those with pre-existing flat feet or diabetes, and anyone who has had an acute ankle injury or repetitive stress on the inner ankle. Without treatment, Stage 1 PTTD reliably progresses to more advanced deformity.
Treatment Based on Stage
Stage 1 (Conservative)
- Custom orthotics with aggressive medial arch support and heel posting
- UCBL orthosis (University of California Biomechanics Laboratory) for severe cases
- Physical therapy targeting posterior tibial tendon strengthening (eccentric exercises)
- Anti-inflammatory medications and immobilization boot for acute flares
Stage 2 (Surgical — Soft Tissue + Bony Procedures)
- Flexor digitorum longus (FDL) tendon transfer — replaces the failing posterior tibial tendon function
- Calcaneal osteotomy (medializing calcaneal osteotomy) — shifts the heel bone inward to correct valgus
- Spring ligament repair
- Cotton osteotomy to elevate the medial column if needed
Stage 3 (Surgical — Arthrodesis)
- Triple arthrodesis — fusion of the subtalar, calcaneocuboid, and talonavicular joints
Early diagnosis and treatment is critical. Stage 1 and early Stage 2 respond excellently to conservative management. Waiting until Stage 3 means major joint fusion surgery with longer recovery and permanent loss of hindfoot motion.
Inner Ankle Pain or Collapsing Arch?
Dr. Biernacki at Balance Foot & Ankle specializes in PTTD diagnosis and treatment at every stage. Early intervention prevents the need for major surgery.
or call (810) 206-1402
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Our board-certified podiatrists treat this condition at two convenient locations. Same-day appointments often available.
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Howell Office
3980 E Grand River Ave, Suite 140
Howell, MI 48843
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Bloomfield Hills Office
43700 Woodward Ave, Suite 207
Bloomfield Hills, MI 48302
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Book Your AppointmentDifferential Diagnosis: What Else Could It Be?
Not every case of posterior tibial tendon dysfunction (pttd) 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.
| Condition | How It Differs |
|---|---|
| Congenital flat foot | Lifelong, usually bilateral, no pain, normal single-leg heel-rise test. |
| Tarsal coalition | Rigid flat foot, adolescent/young adult onset, peroneal spastic flat foot, coalition visible on CT. |
| Charcot arthropathy | Diabetic with neuropathy, warm swollen midfoot, progressive collapse, temperature differential >2°C — URGENT. |
Red Flags — When to See a Podiatrist Now
Seek same-day evaluation at Balance Foot & Ankle if you notice any of the following:
- Sudden collapse of the arch in an adult
- Inability to perform a single-leg heel-rise
- Warm red swollen midfoot (rule out Charcot)
- Progressive deformity over weeks-months
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:
In our clinic, adult acquired flatfoot from PTTD typically presents in women over 40, often with recent weight gain or a period of increased standing. They describe medial ankle pain and progressive “collapse” of the arch on one side. The gold-standard exam finding is an inability to perform a single-leg heel-rise on the affected side — the tendon can no longer invert the heel into a rigid lever. Early PTTD is staged and treated with custom orthoses and bracing, but progressive disease (Stage III-IV) typically requires surgical reconstruction to prevent rigid deformity.
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Podiatrist-recommended products
As an Amazon Associate, Dr. Tom earns from qualifying purchases.
Medial arch support is first-line treatment for PTTD – prevents progression to rigid flatfoot deformity.
View on Amazon →Acute PTTD (stage I-II) requires 4-6 weeks immobilization to halt tendon degeneration before it becomes irreversible.
View on Amazon →Cold therapy on medial ankle controls PTTD inflammation that worsens with weight-bearing activity.
View on Amazon →Topical anti-inflammatory safer than long-term NSAIDs for chronic PTTD management.
View on Amazon →Related resources
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When to See a Podiatrist
If foot or ankle pain has been bothering you for more than a few weeks, home care alone may not be enough. Balance Foot & Ankle offers same-week appointments at our Howell and Bloomfield Hills clinics — no referral needed in most cases. Bring your current shoes and a short list of symptoms and we’ll build you a treatment plan in one visit.
Call Balance Foot & Ankle: (810) 206-1402 · Book online · Offices in Howell & Bloomfield Hills
In-Office Treatment at Balance Foot & Ankle
When conservative care isn’t enough, Dr. Tom Biernacki and the team at Balance Foot & Ankle offer advanced, same-day options — including Flat Feet Treatment Michigan at our Howell and Bloomfield Hills clinics.
Same-day appointments available. Call (810) 206-1402 or book online.
Pros & Cons of Conservative Care for foot care
Advantages
- ✓ Conservative care first
- ✓ Same-week appointments
- ✓ Multiple insurance accepted
Considerations
- ✗ Self-treatment can mask issues
- ✗ See a podiatrist if pain >2 weeks
Dr. Tom’s Recommended Products for foot care
Affiliate disclosure: As an Amazon Associate, Balance Foot & Ankle earns from qualifying purchases. We only recommend products we use with patients.
Footnanny Heel Cream Dr. Tom’s Pick
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Ready to Get Back on Your Feet?
Same-day appointments in Howell + Bloomfield Twp. Most insurance accepted. Dr. Tom Biernacki, DPM & team.
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About Your Care Team at Balance Foot & Ankle
Dr. Tom Biernacki, DPM · Board-Certified Foot & Ankle Surgeon. Specializes in conservative-first care, minimally invasive bunion surgery, and complex reconstruction.
Dr. Carl Jay, DPM · Accepting new patients. Specializes in sports medicine, athletic injuries, and routine podiatric care.
Dr. Daria Gutkin, DPM, AACFAS · Accepting new patients. Specializes in surgical reconstruction and pediatric podiatry.
Locations: 4330 E Grand River Ave, Howell, MI 48843 · 43494 Woodward Ave Suite 208, Bloomfield Twp, MI 48302
Hours: Mon–Fri 8:00 AM – 5:00 PM · (810) 206-1402
Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.
- Plantar Fasciitis: Diagnosis and Conservative Management (PubMed)
- Plantar Fasciitis (APMA)
- Diagnosis and Treatment of Plantar Fasciitis (PubMed / AAFP)
- Heel Pain (APMA)
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