Foot and Ankle Sprains and Strains: Symptoms, Treatment, and Physical Therapy
Foot and ankle injuries can happen during sports, exercise, work, or an everyday misstep. Two common injuries are sprains and strains. Although the terms are often used interchangeably, they involve different tissues.
Many sprains and strains can be managed without surgery. However, an appropriate evaluation is important because fractures, tendon ruptures, and more serious midfoot or ankle injuries can cause similar symptoms.
Physical therapy can help restore mobility, strength, balance, and function while guiding a gradual return to work, exercise, recreation, or sports.
What Is the Difference Between a Sprain and a Strain?
The difference is the type of tissue involved.
A sprain is an injury to a ligament. Ligaments are strong bands of tissue that connect bones and help stabilize joints. A sprain can range from mild stretching to a complete ligament tear.
A strain is an injury to a muscle or tendon. Tendons connect muscles to bones. A strain can involve overstretching or tearing of muscle or tendon fibers.
Both injuries can occur in the foot or ankle, but ankle ligament sprains are especially common.
How Do Foot and Ankle Sprains Happen?
An ankle sprain often occurs when the foot rolls or twists beyond its normal range. Most ankle sprains affect the ligaments on the outside of the ankle after the foot turns inward.
Sprains may happen while:
- Walking or running on uneven ground
- Stepping off a curb
- Tripping or falling
- Landing awkwardly from a jump
- Changing direction during sports
- Experiencing contact that forces the foot or ankle into an unstable position
Less common injuries can involve ligaments on the inside of the ankle or the ligaments connecting the two lower-leg bones above the ankle. The latter is commonly called a high ankle sprain and may require a different recovery plan.
The foot also contains many ligaments. A twisting injury may affect the toes, forefoot, midfoot, or joints closer to the ankle.
How Do Foot and Ankle Strains Happen?
A strain can happen suddenly when a muscle or tendon is overloaded or stretched too far. It may also develop gradually because of repeated activity.
Possible causes include:
- Sprinting or jumping
- Sudden acceleration or stopping
- Pushing off forcefully
- Lifting or carrying
- Repetitive work or exercise
- A rapid increase in training
- Fatigue or reduced muscle capacity
Different muscles and tendons can be affected, so symptoms and treatment vary according to the injured structure.
What Are the Symptoms?
Sprains and strains can produce similar symptoms, including:
- Pain
- Swelling
- Tenderness
- Bruising
- Reduced motion
- Difficulty walking or bearing weight
- Weakness
- Difficulty completing work, exercise, or sports
A sprain may also cause a feeling that the joint is unstable or giving way. A strain may cause pain when the injured muscle contracts or stretches.
Symptoms alone cannot always distinguish a sprain, strain, fracture, tendon rupture, or other injury. The location of pain, how the injury occurred, ability to bear weight, and physical examination findings all provide important information.
Are Ankle Sprains Graded?
Ankle sprains are commonly classified by the amount of ligament damage:
Grade 1 sprain: The ligament fibers have been mildly stretched or microscopically torn, with little or no joint instability.
Grade 2 sprain: The ligament has been partially torn and may cause moderate swelling, bruising, pain, or mild instability.
Grade 3 sprain: The ligament has torn completely and may cause substantial swelling, pain, and instability.
The grade is only one factor in determining treatment. The ligament involved, ability to bear weight, joint stability, other injuries, activity demands, and response to rehabilitation must also be considered.
When Could a “Sprain” Be More Serious?
Not every foot or ankle injury should be treated as a minor sprain.
A Lisfranc injury affects the bones or ligaments in the midfoot. It can occur because of a twisting fall, sports injury, fall from a height, or other trauma. A subtle Lisfranc injury can be mistaken for a simple sprain but may require prolonged protection or surgery.
Possible signs of a more serious midfoot injury include:
- Pain and swelling through the middle of the foot
- Pain that worsens when standing, walking, or pushing off
- Inability to bear weight
- Bruising on the bottom of the foot
Bruising on the bottom of the foot after an injury is particularly concerning and should be medically evaluated.
High ankle sprains, fractures, tendon ruptures, and injuries involving joint instability may also require more protection and a different treatment approach than a typical lateral ankle sprain.
How Are Foot and Ankle Injuries Evaluated?
An evaluation typically begins with questions about:
- How the injury happened
- Where the pain is located
- Whether a pop was heard or felt
- Ability to walk or bear weight
- Changes in swelling, bruising, or function
- Previous injuries
- Work, exercise, and sport demands
The physical examination may assess tenderness, swelling, movement, strength, stability, walking, and the ability to perform relevant tasks.
Is Imaging Always Needed?
No. Many ankle sprains can be identified through the injury history and physical examination without imaging.
An X-ray may be recommended when a fracture is suspected based on factors such as bone tenderness or difficulty bearing weight. X-rays show bones but do not clearly show most ligament, muscle, or tendon injuries.
Ultrasound, MRI, or CT imaging may be considered when another injury is suspected, symptoms continue longer than expected, or more information is needed to guide treatment.
The decision to order imaging should be based on the specific injury and examination rather than routinely ordering the same test for every sprain or strain.
What Should You Do After an Injury?
Stop the activity and avoid forcing painful or unstable movement. The appropriate early care depends on the severity and location of the injury.
Initial management may include:
- Temporarily modifying activity
- Protecting the injured area
- Using ice for short-term pain relief when applied safely
- Compression or elevation to help manage swelling
- A brace, walking boot, or crutches when recommended
Complete rest is not usually the entire treatment plan. For many ankle sprains, early protected movement and weight bearing as tolerated are recommended. More serious injuries may require a period of limited or no weight bearing.
Because the correct approach depends on the injury, seek guidance if you are unsure whether it is safe to walk or exercise.
How Can Physical Therapy Help?
Physical therapy can help address the impairments that remain after the initial injury and reduce the risk of ongoing problems.
Treatment is individualized and may include:
Restoring Mobility
Pain and swelling can limit ankle and foot movement. Controlled exercises may be used to restore motion without placing excessive stress on healing tissue.
Rebuilding Strength
Rehabilitation may address muscles of the foot, ankle, calf, and lower leg. Hip and core strength may also be included when relevant to balance, walking, running, or sport.
Improving Balance and Joint Awareness
An ankle sprain can affect proprioception, which is the body’s ability to sense joint position and movement.
Balance and coordination exercises are important parts of ankle sprain rehabilitation, particularly for people who feel unstable or have experienced repeated sprains.
Improving Walking and Functional Movement
Physical therapy may address walking, stairs, squatting, lifting, or other movements needed for work and daily life.
When a brace, walking boot, or crutches are needed, the physical therapist can help with safe use and the transition back to regular walking when appropriate.
Returning to Running and Sports
Higher-level rehabilitation may include:
- A gradual walking or running progression
- Single-leg exercises
- Jumping and landing
- Acceleration and deceleration
- Changes of direction
- Agility drills
- Sport-specific movement
These activities should be introduced based on healing, symptoms, strength, balance, movement quality, and activity demands.
Do Foot or Ankle Sprains Require Surgery?
Most isolated ankle sprains are treated without surgery, including many complete ligament tears when they are appropriately protected and rehabilitated.
Surgery for an ankle sprain is uncommon. It may be considered when significant pain or instability continues despite appropriate nonsurgical treatment or when the injury involves unstable structures, cartilage damage, a tendon rupture, or another condition requiring repair.
Some severe foot ligament injuries, including unstable Lisfranc injuries, may require surgery.
Treatment decisions should be made with an orthopedic provider based on the specific injury rather than the presence of a sprain or strain alone.
How Long Does Recovery Take?
There is no single recovery timeline for every foot or ankle sprain or strain.
Recovery can be influenced by:
- The structure injured
- Severity of the injury
- Joint stability
- Ability to bear weight
- Presence of a fracture or other injury
- Previous foot or ankle injuries
- Work, exercise, or sport demands
- Response to rehabilitation
A mild injury may improve relatively quickly, while a more severe sprain, muscle or tendon tear, high ankle sprain, or midfoot injury may require a much longer recovery.
Pain relief alone does not mean the foot or ankle has regained the strength, balance, and control needed for unrestricted activity.
How Is Readiness to Return to Activity Evaluated?
Returning to work, exercise, or sports should be a gradual process.
Depending on the injury, activity, and available clinic resources, a physical therapist may consider:
- Pain and swelling
- Foot and ankle mobility
- Strength
- Balance and single-leg control
- Walking and running tolerance
- Jumping and landing
- Change-of-direction ability
- Activity-specific movement
- Confidence in the injured foot or ankle
No single test can guarantee that another injury will not occur. The return plan should reflect the person’s healing, function, goals, and activity demands.
What Is Chronic Ankle Instability?
Some people continue to experience ankle instability, repeated sprains, or a feeling that the ankle gives way after the initial injury. This is often called chronic ankle instability.
Incomplete recovery of strength, balance, movement, or ligament stability may contribute. A previous ankle sprain also increases the risk of another sprain.
Physical therapy can assess ongoing limitations and develop a plan to improve ankle function, balance, strength, and confidence.
When Should You Seek Care?
Seek prompt medical evaluation if you experience:
- Inability to bear weight
- A visibly deformed foot or ankle
- Significant or rapidly increasing swelling
- Severe pain
- Pain directly over a bone
- Bruising on the bottom of the foot
- Numbness, tingling, or changes in skin color
- A cold or pale foot
- An open wound
- A sudden loss of strength or inability to move the foot normally
An evaluation is also appropriate when pain, swelling, instability, or difficulty walking is not improving as expected.
Take the Next Step
Foot and ankle sprains and strains can affect more than your ability to walk. Without appropriate recovery, they may also limit work, exercise, recreation, or sports.
At Optimum Therapies, physical therapy is personalized to your injury, current abilities, and goals. Your physical therapist can evaluate how your foot and ankle move and develop a rehabilitation plan focused on mobility, strength, balance, function, and a gradual return to activity.
Learn more about Orthopedic Therapy at Optimum Therapies.
Returning to exercise or sports? Learn more about Sports & Fitness Rehabilitation.
Contact our team to find an Optimum Therapies clinic near you.
References
This information is intended for general educational purposes and is not a substitute for an individualized medical evaluation or treatment plan.