Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
Balance Foot & Ankle offers same-day appointments for urgent foot and ankle conditions across Southeast Michigan — but the most important factor in outcomes isn’t getting seen quickly. Our podiatrists explain what to do in the first 24-48 hours before your appointment that most patients skip entirely. Call (810) 206-1402 — expert podiatric care across Michigan.
| Grade | Tear Pattern | MRI Finding | Clinical Finding | Treatment Direction |
|---|---|---|---|---|
| Grade 1 (Tendinopathy) | Intact; intratendinous signal change; no structural tear | Increased T2 signal; tendon thickening; no gap | Medial ankle pain; mild swelling; single-leg heel raise possible | PT + orthotics (UCBL); 80–85% success conservative |
| Grade 2 (Partial Tear) | Partial thickness tear; attenuated tendon; longitudinal split | Partial tear; tendon elongated or thinned; split tear pattern | Pain + weakness; single-leg heel raise painful or limited; mild flatfoot | Conservative (orthotics/AFO) or FDL transfer if failed 3–6 months |
| Grade 3 (Complete Rupture) | Full-thickness gap; complete discontinuity | Complete tendon gap; fluid-filled; tendon ends retracted | No single-leg heel raise; “too many toes” sign; progressive flatfoot | FDL transfer + medial displacement calcaneal osteotomy |
| Grade 4 (Rupture + Degeneration) | Complete rupture with tendon degeneration; elongated and irreparable | Complete gap; tendon ends attenuated; degenerated | Same as Grade 3; may have longstanding deformity | FDL transfer or allograft + osteotomy; more complex reconstruction |
| Treatment | Grade / Stage Indication | Technique | Success Rate | Recovery |
|---|---|---|---|---|
| Custom UCBL Orthotic + PT | Grade 1–2; PTTD Stage I–IIA; early flexible flatfoot | Deep heel cup UCBL with medial post; gastrocnemius stretching; PTT strengthening | 75–85% at 1 year for Grade 1 | Immediate use; continue 6–12+ months |
| Arizona AFO / Lace-Up Brace | Grade 2–3; failed UCBL; Stage IIB; unable to do single-leg heel raise | Custom ankle-encompassing brace; controls subtalar motion; medial support | 65–75% avoid surgery in non-operative candidates | Immediate; long-term brace management |
| FDL Tendon Transfer (primary) | Grade 3–4; failed conservative; Stage IIB–III flexible deformity | Transfer FDL to navicular/PTT stump; restores active inversion; addresses deformity | 80–90% with concurrent osteotomy | 6–8 weeks NWB; 4–6 months full activity |
| Medial Displacement Calcaneal Osteotomy (concurrent) | Stage II–III valgus heel deformity; required with FDL transfer in most cases | Shift calcaneal tuberosity 10mm medially; corrects hindfoot valgus; reduces PTT strain | Essential for durable result; FDL alone has 30% failure without osteotomy | Same as FDL transfer; adds ~2 weeks NWB |
| Triple Arthrodesis | Stage III–IV rigid flatfoot; subtalar/TN/CC arthritis; failed prior surgery | Fuse subtalar + talonavicular + calcaneocuboid in corrected alignment | 85–90% pain relief; permanent hindfoot motion loss | 10–12 weeks NWB; 6–9 months full activity |
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Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The posterior tibial tendon (PTT) is the primary dynamic stabilizer of the medial longitudinal arch. It runs from the posteromedial leg, behind the medial malleolus, and fans out to attach to the navicular and multiple plantar structures. When this tendon undergoes progressive degeneration and tearing — posterior tibial tendon dysfunction (PTTD) — the arch collapses, the heel rolls out, and the forefoot abducts, producing the characteristic adult-acquired flatfoot deformity. At Balance Foot & Ankle PLLC, Dr. Tom Biernacki manages the full spectrum of PTTD from bracing to complex flatfoot reconstruction.
Staging and Clinical Presentation
Stage I: Tendon inflammation, intact function. Pain and swelling along the posterior tibial tendon course. Single-leg heel rise intact. MRI shows tendinosis or partial tear. Stage II: Flexible flatfoot deformity — arch collapses under load but corrects with non-weightbearing. Single-leg heel rise painful or absent. “Too many toes” sign visible from behind. Stage III: Rigid flatfoot — deformity no longer corrects with non-weightbearing. Subtalar and transverse tarsal joints degenerate. Stage IV: Ankle involvement — valgus tilt of the ankle with medial deltoid ligament compromise.
Conservative Treatment (Stages I–II)
Custom UCBL or Arizona brace for flexible deformity — controls subtalar pronation and offloads the PTT. Physical therapy targeting posterior tibial strengthening and Achilles flexibility. NSAID therapy and ultrasound-guided tendon sheath injection for Stage I inflammation. Immobilization in a CAM boot for acute exacerbation. Most Stage I patients respond well to conservative care; Stage II with flexible deformity requires aggressive bracing to prevent progression.
Surgical Reconstruction (Stages II–IV)
The reconstructive ladder for flexible flatfoot (Stage II–IIb): Flexor Digitorum Longus (FDL) Tendon Transfer — replaces the degenerated PTT with the adjacent FDL tendon. Medializing Calcaneal Osteotomy — shifts the heel bone medially to realign the Achilles tendon pull under the subtalar joint, correcting hindfoot valgus. Lateral Column Lengthening (Evans Osteotomy) — restores arch height and forefoot abduction correction. Cotton Osteotomy — dorsal opening wedge of the medial cuneiform for plantarflexed 1st ray. Stage III (rigid deformity) requires subtalar or triple arthrodesis. Stage IV requires deltoid ligament reconstruction or ankle fusion.
Dr. Tom's Product Recommendations
Powerstep Pinnacle Plus Orthotic
⭐ Highly Rated | Foundation Wellness Partner | 30% Commission
Semi-rigid arch-support orthotic with deep heel cup — provides medial arch support for early PTTD and flatfoot. A podiatrist-recommended OTC option for Stage I PTTD symptom management.
Dr. Tom says: “My podiatrist recommended these as a starting point for my posterior tibial tendon pain and they significantly reduced my daily discomfort.”
Early PTTD Stage I, medial arch support, flatfoot daily management, plantar fasciitis
Custom UCBL or Arizona brace is required for Stage II+ PTTD — OTC orthotics are insufficient
Disclosure: We earn a commission at no extra cost to you.
New Balance 928v3 Walking Shoe
⭐ Highly Rated | Foundation Wellness Partner | 30% Commission
Extra-wide stability walking shoe with motion control and deep heel cup — one of the top footwear recommendations for PTTD and adult flatfoot patients requiring maximum medial support.
Dr. Tom says: “My podiatrist specifically recommended this shoe for my collapsed arch and it was the first shoe that felt comfortable and supportive in years.”
PTTD adult flatfoot, motion control stability, extra-wide toe box, medial arch support
Motion control shoe — not appropriate for neutral or supinated foot types
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- FDL tendon transfer preserves motion and provides durable arch support for Stage II flatfoot
- Combined calcaneal osteotomy + tendon transfer produces 85-90% good-to-excellent outcomes
- Stage I responds well to conservative care — surgery is not always required
- Comprehensive staging system guides appropriate treatment selection
❌ Cons / Risks
- Flatfoot reconstruction has significant recovery — 10-12 weeks non-weightbearing for osteotomy procedures
- Stage III rigid deformity requires arthrodesis — eliminates subtalar motion permanently
- Without treatment, PTTD progresses — early intervention produces better outcomes
Dr. Tom Biernacki’s Recommendation
PTTD is a progressive condition — the longer it goes untreated, the more arch collapse occurs and the bigger the surgery required to fix it. Stage I and early Stage II can often be managed with aggressive bracing and orthotics. Stage II-IIb flexible deformity is the sweet spot for reconstruction — tendon transfer plus calcaneal osteotomy produces excellent results. Stage III requires fusion, which works but eliminates hindfoot motion permanently. The message: get evaluated early.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
How do I know if I have a posterior tibial tendon tear?
Signs: pain and swelling along the inside of the ankle below the medial malleolus, difficulty standing on one foot on tiptoe, progressive flattening of the medial arch, ‘too many toes’ sign visible from behind (forefoot abduction). The single-leg heel rise test is the most sensitive clinical test — inability to rise on one leg indicates significant posterior tibial tendon dysfunction.
Can a torn posterior tibial tendon heal without surgery?
Stage I tendinosis can stabilize and improve significantly with bracing, physical therapy, and activity modification. Established Stage II flexible flatfoot can be successfully managed with a custom Arizona or UCBL brace — many patients do well long-term without surgery. Stage III rigid deformity and severe Stage II dysfunction typically require surgical reconstruction for definitive management.
What is the recovery after flatfoot reconstruction?
Recovery varies by procedure: isolated FDL transfer 8-10 weeks in a cast/boot; calcaneal osteotomy adds 10-12 weeks non-weightbearing; lateral column lengthening similar. Total active recovery 4-6 months. Most patients return to comfortable walking at 4 months and full activity at 6-9 months. Physical therapy with gait retraining is essential.
Is my flatfoot related to my posterior tibial tendon?
Adult-acquired flatfoot in patients over 40 is most commonly caused by posterior tibial tendon dysfunction — especially if associated with medial ankle pain and arch collapse. Congenital flatfoot (present since childhood) is a separate condition. If your arch was previously normal and has progressively collapsed with medial ankle pain, PTTD evaluation is essential.
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When should I see a podiatrist?
If symptoms persist past 2 weeks, affect your normal activity, or are accompanied by red-flag symptoms (warmth, redness, swelling, inability to bear weight).
What does treatment cost?
Most diagnostic visits and conservative treatments are covered by Medicare and major insurers. Out-of-pocket costs vary by your specific plan.
How quickly can I get an appointment?
Most non-urgent cases see us within 5 business days. Urgent cases (sudden pain, possible fracture) typically same or next business day.
Ready to get relief? Book an appointment at Balance Foot & Ankle or call (810) 206-1402. Same-day appointments available in Howell & Bloomfield Hills, MI.
In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your Achilles tendon conditions, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
OrthoInfo – AAOS: Posterior Tibial Tendon Dysfunction
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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.