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.
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The Spring Ligament — The Arch’s Hidden Support
The spring ligament (plantar calcaneonavicular ligament) is one of the most anatomically important and clinically underrecognized structures in the foot. Acting as the primary static support of the medial longitudinal arch and the socket cradling the talar head at the talonavicular joint, the spring ligament complex is an essential component of arch integrity. When the spring ligament fails — either from progressive attrition in the setting of posterior tibial tendon dysfunction (PTTD) or from acute trauma — the talar head sags plantarward and medially, producing the progressive flatfoot deformity, hindfoot valgus, and forefoot abduction characteristic of adult-acquired flatfoot collapse.
Spring ligament insufficiency is far more prevalent than its clinical recognition would suggest: MRI studies demonstrate spring ligament tears in 87–97% of patients undergoing surgical reconstruction for stage II PTTD. The ligament’s failure is inseparable from the PTTD flatfoot deformity syndrome — as the posterior tibial tendon degenerates and loses its dynamic arch support function, the spring ligament absorbs increased static load and progressively attenuates. This is why modern surgical reconstruction of adult-acquired flatfoot addresses both the tendon (FDL transfer) and the ligament (spring ligament repair or reconstruction) simultaneously.
Diagnosis and MRI Evaluation
Spring ligament tears are reliably diagnosed on MRI — demonstrating signal hyperintensity within the superomedial calcaneonavicular ligament, ligamentous attenuation or complete disruption, periligamentous edema, and often associated talar head articular cartilage injury reflecting chronic talonavicular joint overload. Standard axial and coronal MRI sequences are used to evaluate all three components of the spring ligament complex, with particular attention to the superomedial calcaneonavicular ligament as the primary biomechanical component. Concurrent weight-bearing X-rays quantify the associated deformity — lateral Meary’s angle, AP talar coverage angle, and hindfoot alignment — essential for surgical planning.
Treatment — From Bracing to Surgical Reconstruction
Conservative management of spring ligament insufficiency — whether isolated or in the setting of early PTTD — uses custom UCBL orthotic or Arizona AFO to immobilize the talonavicular joint and reduce spring ligament tensile load during ambulation. Patients with isolated spring ligament tears without significant PTT dysfunction may achieve satisfactory symptom control with aggressive orthotic management. Surgical reconstruction is indicated for spring ligament insufficiency that fails conservative management or in the context of PTTD Stage II reconstruction where concurrent spring ligament repair significantly improves the durability of the flatfoot correction. Primary end-to-end repair is performed for ligamentous tissue of adequate quality; allograft reconstruction (using peroneus longus or hamstring allograft) is used when primary repair is not possible. Dr. Biernacki evaluates spring ligament integrity as part of the comprehensive flatfoot evaluation — the ligament’s status directly influences the surgical plan for any adult-acquired flatfoot reconstruction.
Dr. Tom's Product Recommendations
Arizona AFO Custom Brace (Talonavicular Support)
⭐ Foundation Wellness Partner
Custom articulated ankle-foot orthosis providing talonavicular joint stability — the primary conservative management tool for spring ligament insufficiency, reducing talar head sag and medial arch collapse during ambulation.
Dr. Tom says: “My podiatrist prescribed a custom Arizona brace for my spring ligament tear — the talonavicular support dramatically reduced my arch pain and flatfoot fatigue.”
Spring ligament insufficiency conservative management, talonavicular joint stabilization, medial arch support
Stage III rigid flatfoot or advanced spring ligament tear requiring surgical reconstruction
Disclosure: We earn a commission at no extra cost to you.
PowerStep Pinnacle Orthotic Insoles
⭐ Foundation Wellness Partner
Semi-rigid high-arch OTC insole providing medial arch support — an interim support option for spring ligament insufficiency patients awaiting custom UCBL or Arizona AFO fabrication.
Dr. Tom says: “My podiatrist recommended the Superfeet Green as an interim arch support while my custom brace was being fabricated — it helped manage my medial arch pain in the meantime.”
Spring ligament insufficiency interim arch support, medial arch OTC management
Custom UCBL or AFO prescription — OTC insoles are insufficient for significant spring ligament insufficiency
Disclosure: We earn a commission at no extra cost to you.
New Balance 928v3 (Maximum Stability Walking Shoe)
⭐ Foundation Wellness Partner
Maximum medial stability walking shoe with rollbar technology — provides OTC footwear-level talonavicular support for spring ligament insufficiency patients during daily walking activities.
Dr. Tom says: “My foot doctor recommended the New Balance 928 for my spring ligament arch pain — the maximum stability platform reduced my daily arch collapse fatigue.”
Spring ligament insufficiency footwear management, maximum medial stability, daily walking support
Advanced flatfoot or spring ligament tear requiring custom AFO or surgical reconstruction
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- Custom UCBL orthotic and Arizona AFO achieve good symptom control for isolated spring ligament insufficiency
- Concurrent spring ligament repair in PTTD reconstruction improves long-term correction durability
- MRI reliably identifies spring ligament tears and their severity to guide surgical planning
- Primary end-to-end repair is sufficient when adequate ligamentous tissue is present
❌ Cons / Risks
- Spring ligament insufficiency is almost universally present in Stage II PTTD — addressing only the tendon without the ligament produces inferior outcomes
- Allograft reconstruction is required when spring ligament tissue quality is too poor for primary repair
- Spring ligament reconstruction extends PTTD surgical recovery — 3–4 months of protected weight-bearing
- Advanced talonavicular arthritic change from chronic spring ligament insufficiency may require talonavicular fusion
Dr. Tom Biernacki’s Recommendation
The spring ligament is the unsung hero of arch mechanics — and it fails silently in almost every case of Stage II adult-acquired flatfoot. Surgeons who repair the posterior tibial tendon and do a calcaneal osteotomy without addressing the spring ligament are setting patients up for recurrence, because the static support that holds the talar head in position hasn’t been restored. I address the spring ligament in every PTTD reconstruction — primary repair when the tissue allows it, allograft when it doesn’t. The outcomes with comprehensive reconstruction are significantly better than tendon transfer alone.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
What is the spring ligament?
The spring ligament (plantar calcaneonavicular ligament) is a ligament complex on the medial-plantar side of the foot that connects the calcaneus (heel bone) to the navicular (midfoot bone), supporting the talar head and maintaining the medial longitudinal arch. It functions as the primary static support of the arch — absorbing the tensile forces that would otherwise cause arch collapse. When the spring ligament fails, the talar head sags plantarward and medially, producing flatfoot deformity.
How does spring ligament tear cause flatfoot?
The spring ligament cradles the talar head at the talonavicular joint, preventing it from sagging into a valgus (collapsed) position. When the spring ligament tears, this static support is lost — the talar head drops plantarward and medially, driving hindfoot valgus, arch collapse, and forefoot abduction. This is why spring ligament insufficiency is essentially inseparable from adult-acquired flatfoot deformity; the two conditions occur together in nearly all surgical cases.
Is surgery required for a spring ligament tear?
Not always — isolated spring ligament insufficiency without significant flatfoot progression can be managed with custom UCBL orthotic or Arizona AFO, which immobilizes the talonavicular joint and reduces spring ligament tensile load. Surgery is indicated for spring ligament tears that fail conservative management or in the setting of PTTD Stage II reconstruction where concurrent spring ligament repair improves long-term outcomes.
Can a spring ligament tear heal on its own?
Spring ligament tears rarely heal with conservative management because the ligament is under constant mechanical load during weight-bearing. Conservative management with custom orthotics and bracing can control symptoms and prevent progression, but does not restore ligamentous integrity. The clinical goal of conservative management is symptom control and deformity prevention — not ligament healing.
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Related Conditions
PubMed: Spring Ligament Complex — Anatomy and Pathology
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) 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 made him one of the most-followed foot & ankle educators on YouTube.