How long does an ankle sprain take to heal?

Recovery time depends on severity: Grade 1 (mild stretching) typically heals in 1-3 weeks, Grade 2 (partial tear) in 3-6 weeks, and Grade 3 (complete tear) in 6-12 weeks or longer. Proper rehabilitation is critical to prevent chronic ankle instability, which affects up to 40% of patients who don't receive adequate treatment. Dr. Biernacki creates customized recovery plans.

When should I see a doctor for a sprained ankle?

Seek professional evaluation if you can't bear weight, notice significant swelling or bruising, hear a pop at the time of injury, have numbness, or if pain hasn't improved after 5-7 days of RICE treatment. X-rays or MRI may be needed to rule out fractures. Dr. Biernacki offers same-day urgent evaluations at 810-206-1402.

Can a sprained ankle heal without treatment?

While mild sprains may heal with rest and home care, undiagnosed ligament tears and improperly rehabilitated sprains frequently lead to chronic ankle instability, recurrent sprains, and early-onset arthritis. A proper evaluation ensures appropriate treatment and reduces your risk of long-term complications significantly.

How do you tell if a child has a sprain or fracture?

In children, the growth plate is weaker than ligaments, so forces that cause sprains in adults often cause growth plate fractures in children. Warning signs of a fracture include inability to bear weight, point tenderness directly over the growth plate (at the tip of the ankle bone), significant swelling within the first hour, and bruising. X-rays are essential for any significant ankle injury in a child.

What is a Salter-Harris fracture?

A Salter-Harris fracture is a fracture through or around the growth plate in a childs bone. There are five types (I-V) based on the fracture pattern relative to the growth plate. Types I and II are most common in the ankle and usually heal well. Types III-V involve the joint surface and require more careful management to prevent growth disturbance.

Can a growth plate fracture affect my childs growth?

Most growth plate fractures heal without growth problems when properly treated. However, some fractures can damage the growth plate cells, potentially causing the bone to grow crooked or shorter than the opposite side. This is why proper diagnosis, treatment, and follow-up monitoring are essential. Your podiatrist will track growth with periodic X-rays.

Ankle Sprains in Children | Growth Plate Fracture Risks

Name: Ankle Sprains in Children | Growth Plate Fracture Risks
Creator: Dr. Tom Biernacki, DPM
Published: 2026-03-23T12:18:30-04:00

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

Medically Reviewed by Dr. Jeffery Agnoli, DPM — Board-Certified Podiatrist, Balance Foot & Ankle Specialists, Michigan. Last updated April 2026.

Treatment at Balance Foot & Ankle: Foot Emergency Guide →

Why “It’s Just a Sprain” Can Be Wrong in Children

When a child rolls or twists their ankle during sports, the natural instinct is to assume a sprain — particularly if the child can bear some weight and doesn’t have obvious deformity. But in skeletally immature children, the ligaments are actually stronger than the growth plates (physis) — the cartilaginous zones at the ends of growing bones. This means the same force that sprains an adult’s ligament can fracture a child’s growth plate, and these injuries deserve careful evaluation to avoid missed diagnoses with long-term growth consequences.

At Balance Foot & Ankle in Howell and Bloomfield Township, Michigan, we evaluate pediatric ankle injuries with awareness of the growth plate injuries that frequently masquerade as sprains.

Growth Plate Anatomy and Vulnerability

The growth plates (physes) at the distal fibula and distal tibia are the last to close (around age 14-17 in girls, 16-18 in boys). The distal fibula growth plate is the most commonly fractured growth plate in the body, typically from the same inversion mechanism that causes adult lateral ankle sprains. The distal tibial growth plate closes in a predictable pattern that makes transitional fractures (Tillaux fracture, triplane fracture) common in early adolescence.

The Salter-Harris Classification

Salter-Harris (SH) classification describes growth plate injuries by the fracture pattern and its relationship to the growth plate, with higher grades indicating more severe injuries with greater growth disturbance potential. SH Type I involves the growth plate only with no bone fracture — X-rays may appear normal, but the growth plate is physically separated. SH Type II (most common) extends through the growth plate and into the metaphysis. SH Type III involves the growth plate and epiphysis (joint surface). SH Type IV crosses through epiphysis, growth plate, and metaphysis — requiring accurate anatomical reduction to prevent growth arrest. SH Type V involves crush injury to the growth plate.

Clinical Recognition

The key clinical clue is growth plate tenderness — point tenderness directly over the growth plate (just above the ankle) in a child after ankle injury means growth plate fracture until proven otherwise. Ligamentous sprain causes maximum tenderness slightly lower (over the ATFL and CFL). X-rays may show a growth plate fracture as subtle widening of the physis, but SH Type I fractures in particular can have normal X-rays — clinical suspicion based on growth plate tenderness should guide conservative management (boot immobilization) even with normal imaging.

Treatment and Growth Implications

Most SH Type I and II distal fibula fractures heal completely with 4-6 weeks of immobilization without growth disturbance. SH Type III and IV injuries involving the joint surface require accurate reduction — sometimes surgical — to restore cartilage alignment and minimize post-traumatic arthritis risk. Monitoring for growth disturbance (leg length discrepancy, angular deformity) with follow-up imaging is recommended for higher-grade injuries. Parents should be counseled that rare growth disturbances can occur even with excellent treatment of more severe growth plate injuries.

The Bottom Line for Parents

Any ankle injury in a child that has significant tenderness on the bony part of the ankle (as opposed to soft tissue only), occurs during a period of rapid growth, or doesn’t clearly improve within a week deserves professional evaluation with appropriate imaging. Assuming “it’s just a sprain” in a child and delaying evaluation risks missing a growth plate injury that needs specific management.

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Child Sprained Their Ankle? Rule Out a Growth Plate Fracture

In children, what looks like an ankle sprain may actually be a growth plate fracture requiring different treatment. Dr. Tom Biernacki performs careful evaluation to distinguish between sprains and Salter-Harris fractures to protect your childs growing bones.

Learn About Pediatric Ankle Injury Treatment | Book Your Appointment | Call (810) 206-1402

Clinical References

Boutis K, et al. Sensitivity of a clinical examination to predict need for radiography in children with ankle injuries. The Lancet. 2001;358(9299):2118-2121.
Bäcker HC, et al. Salter-Harris fractures of the ankle in children: a review. Journal of Pediatric Orthopaedics B. 2020;29(2):115-124.
Crawford AH. Fractures about the ankle in children. Orthopedic Clinics of North America. 1990;21(2):389-399.

Dr. Tom Biernacki, DPM

Affiliate Disclosure: This page contains affiliate links to products we recommend. If you purchase through these links, Balance Foot & Ankle may earn a small commission at no additional cost to you. We only recommend products we use with our patients.

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.