Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Township, MI
Last reviewed: May 2026
A spring ligament injury — often coexisting with posterior tibial tendon dysfunction — is a hidden cause of progressive flatfoot. Catching it early opens up reconstructive options before the deformity becomes rigid.
You’re in the right place. Dr. Tom Biernacki, DPM, FACFAS — board-certified foot & ankle surgeon with 3,000+ surgeries — explains exactly what spring ligament injury means and what works. Call (810) 206-1402 for same-day appointment at Howell or Bloomfield Township.
Quick answer: Spring Ligament Injury is a common foot/ankle topic that affects many patients. The 2026 evidence-based approach combines proper diagnosis, conservative-first treatment, and escalation only when needed. We treat this regularly at our Howell and Bloomfield Township practices. Call (810) 206-1402.
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The most important clinical decision with Spring Ligament Injury isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
The most important clinical decision with Spring Ligament Injury isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
What Is the Spring Ligament?
The spring ligament — formally the plantar calcaneonavicular ligament complex — runs from the sustentaculum tali of the calcaneus to the plantar surface of the navicular. It forms the ‘floor’ of the medial longitudinal arch, directly supporting the head of the talus from below. When the spring ligament is intact and appropriately stiff, it prevents the talar head from plantar-medially migrating (the arch-collapsing movement).
The spring ligament complex has three components: the superomedial calcaneonavicular ligament (largest, most important clinically), the medioplantar oblique ligament, and the inferoplantar longitudinal ligament. MRI reliably demonstrates tears in these components.
The posterior tibial tendon (PTT) and spring ligament work as a functional unit for arch support. The PTT provides dynamic support; the spring ligament provides passive restraint. When either fails, the other is overloaded — explaining why spring ligament insufficiency and PTT dysfunction occur together in adult acquired flatfoot.
How Spring Ligament Injury Develops
Progressive degeneration rather than acute trauma is the most common mechanism. Years of increased arch strain — from obesity, flat feet, high activity levels — cause cumulative collagen fiber disruption in the spring ligament. The ligament gradually elongates and loses stiffness, allowing progressive medial arch collapse.
Acute spring ligament tears occur with sudden severe inversion or eversion injuries — often in conjunction with posterior tibial tendon injuries. A patient who rolls an ankle severely and subsequently develops progressive flat foot should be evaluated for spring ligament damage.
Risk factors: obesity (increased arch loading), age (collagen degeneration), female sex, diabetes (glycation of collagen reduces ligament integrity), inflammatory arthropathies (rheumatoid arthritis destroys periarticular connective tissue), and pre-existing flexible flat foot with already-elevated arch strain.
Diagnosis and Treatment
MRI is the gold standard for spring ligament assessment — it demonstrates disruption of the ligament fibers, thinning, increased signal (edema), and associated talar head uncovering. Weight-bearing X-rays show arch collapse, heel valgus, and medial column break.
Conservative management: custom orthotics with aggressive medial arch support and heel valgus correction — the orthotic mechanically substitutes for the spring ligament’s passive restraint. Physical therapy for tibialis posterior strengthening. Efficacious for mild to moderate spring ligament insufficiency.
Surgical treatment: spring ligament reconstruction (primary repair or allograft reconstruction) combined with PTT surgery and calcaneal osteotomy addresses all three components of adult acquired flatfoot simultaneously. This is major reconstructive surgery with 4–6 months recovery.
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Spring ligament insufficiency, adult acquired flatfoot, arch support
Advanced Stage III-IV flatfoot requiring surgical consultation
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Compression for medial ankle and arch swelling from spring ligament stress
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Medial ankle swelling, adult acquired flatfoot edema, daily support
Stage III-IV flatfoot requiring rigid support or surgical evaluation
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- Custom orthotics effectively control early-stage spring ligament insufficiency
- Surgical reconstruction produces durable correction in appropriate candidates
❌ Cons / Risks
- Spring ligament tears on MRI are frequently underreported or missed
- Major flatfoot reconstruction surgery requires 4–6 months recovery
- Without treatment, progressive deformity becomes increasingly difficult to reconstruct
Dr. Tom Biernacki’s Recommendation
The spring ligament is the unsung hero of the medial arch — and one of the most underdiagnosed causes of adult acquired flatfoot. When I see a patient with progressive flat foot and medial ankle pain, I’m evaluating both the posterior tibial tendon AND the spring ligament. On MRI, I specifically request spring ligament evaluation. The treatment implications are significant: spring ligament tears require reconstruction, not just PTT repair — missing this leads to surgical failure.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
Can you tear the spring ligament without knowing it?
Yes — gradual degeneration occurs without a single injury event. Progressive flatfoot with medial arch pain is the subtle presentation.
Does the spring ligament heal on its own?
Unlike tendons, ligaments have poor intrinsic healing capacity. Significant tears require surgical reconstruction for restoration of function.
Is spring ligament repair covered by insurance?
When associated with adult acquired flatfoot reconstruction — yes, typically covered. Requires pre-authorization in most cases.
Can flat feet cause spring ligament damage?
Yes — pre-existing flat feet place the spring ligament under chronic elevated tension, predisposing it to degeneration.
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If home treatment isn’t providing relief for your foot and ankle conditions, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
PubMed: Spring Ligament Complex — Anatomy and Pathology
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Spring ligament injuries can quietly collapse an arch
The spring ligament is the keystone of the medial arch. A tear or attenuation often coexists with posterior tibial tendon dysfunction and accelerates flatfoot progression. Confirmation requires MRI; staging guides whether bracing is enough or whether reconstructive surgery is warranted. Earlier intervention preserves more native joint motion.
Balance Foot & Ankle — Howell & Bloomfield Township, MI: board-certified podiatrists, same-week appointments, most insurance accepted.
Book a Spring-Ligament Evaluation → or call (810) 206-1402
Related reading: posterior tibial tendonitis · best shoes for flat feet · best insoles for flat feet
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.