PTTD Stage II Flexible Flatfoot: Surgical Reconstruction Options and Recovery

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

Stage II posterior tibial tendon dysfunction (PTTD) — flexible adult-acquired flatfoot deformity where the arch collapses during weight-bearing but corrects on non-weight-bearing — represents the transition from a tendon problem to a structural problem. Once the foot has progressed to Stage II, orthotics alone are insufficient for most patients — the tendon has failed and the medial supporting structures have stretched beyond their capacity to hold the arch. Surgical reconstruction restores the arch and prevents progression to the irreversible Stage III rigid flatfoot deformity.

Surgical Reconstruction Components

Stage II PTTD reconstruction typically combines multiple procedures addressing the different components of the deformity — no single procedure corrects all aspects of the complex three-dimensional collapse. The four-component reconstruction: (1) FDL-to-PTT tendon transfer — the flexor digitorum longus (FDL) is harvested and transferred to the navicular to replace the failed posterior tibial tendon as the primary arch-maintaining structure; (2) Medial calcaneal displacement osteotomy (MDCO) — the calcaneal tuberosity is cut and shifted medially 8–10mm to realign the heel under the leg, correcting the hindfoot valgus that is the most functionally limiting component of the deformity; (3) Spring ligament repair — the primary soft tissue restraint of the talonavicular joint is reconstructed to restore arch stability; (4) Gastrocnemius recession — the tight gastrocnemius (equinus) that drives arch collapse through excessive Achilles load is released through a Baumann or Strayer gastrocnemius slide. For severe abduction deformity, a lateral column lengthening (calcaneal Z-osteotomy or calcaneal neck lengthening) is added to correct the foot-abduction (too many toes) component.

Recovery and Outcomes

Recovery: non-weight-bearing for 6 weeks post-operatively (the calcaneal osteotomy requires full protection during initial healing); progressive weight-bearing from weeks 6–12 in a boot; transition to supportive shoe with custom orthotic at 3 months; return to full unrestricted activity at 6–9 months. Outcomes: 85–95% of Stage II patients achieve significant pain reduction and functional improvement; the medial calcaneal displacement osteotomy is the highest-impact component for functional outcome. Dr. Biernacki at Balance Foot & Ankle performs Stage II PTTD reconstruction with calcaneal osteotomy and tendon transfer for eligible patients. Call (810) 206-1402 at our Bloomfield Hills or Howell office.

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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.

Frequently Asked Questions

Do flat feet always cause pain?

No — many people with flat feet have no pain at all. Pain develops when flat feet lead to excessive pronation that stresses tendons, ligaments, and joints. Risk factors for developing pain include obesity, prolonged standing, high-impact activities, and aging.

Can flat feet be corrected?

In children, arch development can sometimes be supported. In adults, the arch cannot be rebuilt without surgery, but custom orthotics, physical therapy, and appropriate footwear can effectively control symptoms and prevent progression.

What is the treatment for adult flatfoot deformity?

Early stages respond well to custom orthotics, physical therapy, and supportive footwear. Advanced cases with Achilles tightness may benefit from stretching and bracing. Severe cases — especially stage III-IV posterior tibial tendon dysfunction — may require reconstruction surgery.

Need Treatment at Balance Foot & Ankle?

Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin see patients at our Howell and Bloomfield Township offices.

Book Online or call (810) 206-1402

Stage II Flatfoot Reconstruction Surgery in Michigan

Progressive flatfoot from Stage II PTTD requires expert surgical reconstruction to prevent further collapse. Our podiatric surgeons perform comprehensive flatfoot correction including tendon transfers, calcaneal osteotomies, and midfoot procedures tailored to your specific deformity.

Explore Flatfoot Treatment Options | Book Your Appointment | Call (810) 206-1402

Clinical References

1. Myerson MS. Adult acquired flatfoot deformity: treatment of dysfunction of the posterior tibial tendon. J Bone Joint Surg Am. 1996;78(5):780-792.
2. Guyton GP, Jeng C, Krieger LE, Mann RA. Flexor digitorum longus transfer and medial displacement calcaneal osteotomy for posterior tibial tendon dysfunction. Foot Ankle Int. 2001;22(8):627-632.
3. Hiller L, Pinney SJ. Surgical treatment of acquired flatfoot deformity: what is the state of practice among academic foot and ankle surgeons in 2002? Foot Ankle Int. 2003;24(9):701-705.

Differential Diagnosis: What Else Could It Be?

Several conditions share symptoms with Flat Feet (Pes Planus) and are commonly misdiagnosed in the first office visit. Considering these alternatives is part of every Balance Foot & Ankle exam:

• Posterior tibial tendon dysfunction (PTTD). Acquired adult flatfoot with single-leg heel-rise weakness.
• Tarsal coalition. Rigid flatfoot in an adolescent — bone bridge between hindfoot bones.
• Charcot foot (diabetic). Sudden warm, swollen, collapsing midfoot in a diabetic — urgent off-loading.

If your symptoms don’t fit the textbook pattern, ask your podiatrist which differentials they ruled out — that conversation often shortcuts months of trial-and-error treatment.

Most Common Mistake We See

The most common mistake we see is: Buying motion-control shoes without a gait assessment. Fix: get a pressure-plate analysis or wet-foot test first to confirm overpronation and arch height.

Warning Signs That Need Same-Day Care