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Ankle

Ankle Fracture

An ankle fracture is a break in one or more of the bones that make up the ankle joint. These injuries are common and can range from minor, stable breaks to severe, unstable injuries involving multiple bones that affect the attached ligaments. Proper diagnosis and treatment are crucial to restore joint function, maintain mobility, and prevent long-term complications like arthritis or chronic pain.

Ankle fractures can affect anyone—from athletes to elderly individuals—and treatment varies depending on the severity, location, and stability of the fracture. With appropriate care, most people can return to full activity, although recovery may take several months.

The ankle joint consists of three bones:

  1. Tibia (shinbone) – The larger bone of the inner (medial) side of the lower leg.
  2. Fibula – The smaller bone on the outer (lateral) side of the lower leg.
  3. Talus – The foot bone that fits into the ankle joint, sitting between the tibia and calcaneus (heel bone).

There are also important ligaments that stabilize the join and connect the bones of the ankle:

  • Medial (deltoid) ligament – on the inner ankle.
  • Lateral ligaments – including the anterior talofibular, calcaneofibular, and posterior talofibular ligaments.
  • Syndesmosis – a set of ligaments connecting the tibia and fibula above the ankle (important for ankle stability).

Fractures are typically classified by which bones are involved (tibia, fibula, or both), whether the fracture is displaced (bones are misaligned), and whether the joint is stable.

Ankle fractures are usually caused by:

  • Twisting or rotating the ankle (e.g., stepping off a curb awkwardly)
  • Falls – especially from a height
  • Sports injuries – such as during football, basketball, skiing, or trail running
  • High energy traumas (e.g., Motor vehicle accidents)
  • Direct trauma – such as a blow to the ankle

These injuries can occur in both low-impact situations (e.g., a misstep) and high-energy trauma (e.g., car crash), with more severe injuries often involving multiple bones or dislocations.

The most common symptoms of an ankle fracture include:

  • Sudden pain at the time of injury
  • Swelling and bruising around the ankle
  • Inability to bear weight on the injured leg
  • Deformity in severe cases (e.g., crooked or displaced foot)
  • Tenderness over the bone
  • Instability or feeling like the ankle is going to give out

In less severe fractures, it may be mistaken for a sprain. A thorough examination and imaging are needed to confirm the diagnosis.

Physical Examination

  • Assessments for tenderness, swelling, deformity, and ability to move or bear weight.
  • Evaluation of the skin, blood flow, and nerve function is important to rule out complications like compartment syndrome or nerve injury.

X-rays

  • Standard imaging to visualize bone alignment and identify fractures.
  • Taken from multiple angles to assess both the ankle joint and surrounding bones.

CT or MRI (when needed)

  • CT scan may be used to better evaluate complex or joint-involving fractures.
  • MRI can helpful in assessing associated soft tissue or ligament damage if there is further concern after examination and X-rays

Fractures are often described using the Weber classification, based on the location of the fibula fracture:

  • Weber A: Below the syndesmosis (usually stable)
  • Weber B: At the level of the syndesmosis (may be unstable)
  • Weber C: Above the syndesmosis (usually unstable, may involve syndesmotic injury)

Alternatively, they may be classified based on:

  • Malleolar involvement:
    • Unimalleolar: one side (medial or lateral)
    • Bimalleolar: both medial and lateral
    • Trimalleolar: medial, lateral, and posterior malleolus

Nonoperative (nonsurgical) treatment is appropriate for stable, non-displaced fractures or in patients for whom surgery poses excessive risk due to age or other health conditions.

Indications for Nonoperative Care:

  • Fracture is non-displaced (e.g., hairline fracture)
  • Stable joint (no widening of the ankle mortise)
  • Patient can bear weight with minimal pain
  • No syndesmotic (ligament) injury

Treatment Options:

  • Immobilization:
    • Use of a cast, walking boot, or splint to stabilize the ankle.
    • Typically worn for 4–8 weeks.
  • Non-weight bearing initially, followed by gradual progression to full weight-bearing.
  • Elevation and ice to reduce swelling.
  • Pain control with over-the-counter or prescribed medication.
  • Physical therapy once the fracture heals to regain strength and range of motion.

Outcomes:

  • Most stable fractures heal well within 6–10 weeks.
  • Risk of stiffness or chronic pain is low with proper rehab.
  • Regular follow-up imaging is used to confirm healing.

Surgery is required when:

  • The fracture is displaced (bones are misaligned)
  • The joint is unstable
  • There is syndesmotic disruption
  • The fracture is open (skin is broken, requiring emergency surgery)
  • There is associated dislocation

The broken bones are realigned (reduction) and stabilized using:

  • Plates and screws
  • Syndesmotic screws or tightrope to stabilize the tibia-fibula joint

  • Immobilization with a cast or boot
  • Limited, progressive weight-bearing over 6–8 weeks
  • Gradual physical therapy to regain strength and motion
  • Follow-up X-rays to monitor healing

  • Infection
  • Nerve or blood vessel injury
  • Hardware irritation (may need removal later)
  • Nonunion or delayed healing
  • Post-traumatic arthritis

Recovery includes a structured rehabilitation program, whether treated nonoperatively or surgically:

Phase 1: (0–6 weeks)

  • Immobilization
  • Non-weight bearing
  • Elevation and swelling control

Phase 2: (6–10 weeks)

  • Progressive weight bearing as the fracture heals
  • Begin gentle range-of-motion exercises

Phase 3: (10–16+ weeks)

  • Progressive strengthening
  • Gait training
  • Balance and proprioception exercises

Return to Activity:

  • Most people can return to normal activities in 3–4 months
  • Athletes may require 4–6 months or more, depending on the injury and sport
  • Full recovery of strength and function can take up to a year

Most ankle fractures heal well with appropriate treatment:

  • Non-displaced fractures: 90–95% heal successfully without surgery
  • Surgical treatment: High success rate, especially if done within 1–2 weeks of injury
  • Return to work and sport: High rates in most patients after rehab
  • Long-term complications may include:
    • Post-traumatic arthritis
    • Chronic pain
    • Reduced range of motion
    • Hardware irritation – hardware removal can be considered once the fracture heals

Proper treatment, rehabilitation, and patient commitment are key to achieving the best outcome.

Seek medical attention if you experience:

  • Sudden pain after twisting or falling on your ankle
  • Swelling and bruising that worsens quickly
  • Inability to bear weight
  • Deformity or misalignment of the ankle
  • Open wounds over the ankle
  • Persistent pain or difficulty walking after an injury

Ankle fractures are common and vary widely in severity. Early diagnosis, appropriate treatment—whether nonoperative or surgical—and a comprehensive rehabilitation plan are essential for optimal recovery. Most people can return to full activity with minimal long-term problems, especially when the fracture is identified and treated early. Proper treatment, restoring joint stability and postsurgical physical therapy is key to success.

At a Glance

Dr. Hasani Swindell

  • Fellowship-Trained Sports Medicine Specialist
  • Board-Certified Orthopedic Surgeon
  • Summa Cum Laude Graduate from the University of Pittsburgh
  • Medical Degree from Columbia University
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