What Is an Ankle Sprain?
An ankle sprain occurs when one or more of the ligaments that stabilize the ankle are stretched beyond their normal capacity or torn. This most commonly happens when the foot suddenly twists inward, placing excessive stress on the supporting ligaments located on the outside of the ankle.
The majority of ankle sprains involve the lateral ligament complex, which includes the anterior talofibular ligament (ATFL) and the calcaneofibular ligament (CFL). Among these, the ATFL is the ligament most frequently injured, followed by the CFL. Together, these structures play a crucial role in maintaining ankle stability during standing, walking, running, and sporting activities.
Although an ankle sprain is often considered a minor injury, it should never be underestimated. Without proper diagnosis and treatment, ligament injuries may heal incompletely, increasing the risk of chronic pain, recurrent sprains, and long-term ankle instability.
How Do Ankle Sprains Occur?
Most ankle sprains occur when the foot rolls inward while the ankle is pointed downward, a position known as inversion with plantarflexion. This movement places significant tension on the lateral ligaments and may cause them to stretch or tear.
Common situations that can lead to an ankle sprain include:
- Landing awkwardly after a jump
- Stepping onto another person’s foot during sports
- Walking or running on uneven ground
- Sudden changes in direction while running
- Slipping, missing a step, or losing balance during everyday activities
Sports that involve frequent jumping, rapid acceleration, and quick directional changes—such as basketball, volleyball, soccer, football, and handball—carry a particularly high risk of ankle sprains. Many sports-related ankle sprains occur after landing on another player’s foot, making this one of the most common injury mechanisms.
Who Is at Risk?
While anyone can sustain an ankle sprain, certain factors significantly increase the likelihood of injury.
The single greatest risk factor is a previous ankle sprain, particularly if rehabilitation was incomplete or the ankle never regained its full strength and stability. Other factors include participation in sports requiring jumping and cutting movements, weakness of the muscles supporting the ankle—especially the peroneal muscles—reduced ankle flexibility, higher body weight, and certain foot shapes such as high arches.
Female athletes and individuals with impaired balance or proprioception may also have an increased risk of recurrent ankle injuries. Identifying these risk factors allows preventive strategies to be introduced before repeated sprains occur.
Grading Ankle Sprains
The severity of an ankle sprain is determined by the extent of ligament injury and the degree of ankle instability.
Grade I (Mild)
A Grade I sprain involves stretching of the ligament with only minimal microscopic tearing. Symptoms usually include mild pain, slight swelling, and little or no loss of ankle stability. Most patients can continue walking, although discomfort is common.
Grade II (Moderate)
A Grade II sprain is characterized by a partial tear of the ligament. Patients typically experience moderate pain, noticeable swelling and bruising, tenderness around the ankle, and some loss of strength and stability. Walking is often painful, and sporting activities should be avoided during recovery.
Grade III (Severe)
A Grade III sprain represents a complete rupture of one or more ankle ligaments. This injury is usually associated with significant swelling, bruising, severe pain during the initial stages, and marked ankle instability. Weight-bearing is often difficult, and patients commonly describe the ankle as feeling unstable or unable to support their body weight.
Accurately grading the injury is an essential part of treatment planning, as it helps determine the most appropriate rehabilitation program and whether surgical intervention should be considered.
Non-Surgical Treatment
The majority of ankle sprains can be successfully managed without surgery. Early treatment focuses on controlling pain and swelling while protecting the injured ligaments and encouraging safe movement. As healing progresses, rehabilitation becomes the cornerstone of recovery, helping restore strength, balance, flexibility, and normal ankle function.
For most patients, a structured rehabilitation program combined with functional support allows a safe return to daily activities and sports while reducing the risk of future injuries.
Immediate Care
The first few days following an ankle sprain are critical for reducing pain and swelling while protecting the injured ligaments. Early management focuses on controlling inflammation without unnecessarily restricting movement, allowing the healing process to begin under the best possible conditions.
Rest and Activity Modification
Immediately after the injury, activities that increase pain should be avoided. While the ankle should be protected from excessive stress, prolonged immobilization is generally not recommended. Gentle movement and gradual return to weight-bearing, as tolerated, help maintain joint mobility and promote recovery.
Ice Therapy
Applying ice during the first several days after injury can help reduce pain and swelling. Ice should always be wrapped in a towel or cloth before being placed on the skin to prevent cold-related skin injury. Applying ice for approximately 20 to 30 minutes, three to four times daily, is generally recommended during the acute phase.
Compression
Compression with an elastic bandage or functional ankle brace helps minimize swelling while providing additional support to the injured ligaments. The bandage should fit comfortably without restricting circulation.
Elevation
Keeping the ankle elevated above the level of the heart whenever possible helps reduce swelling by improving venous and lymphatic drainage. Elevation is particularly beneficial during the first few days after injury.
Early Weight-Bearing
Current evidence supports early protected weight-bearing whenever pain allows. Walking with the assistance of crutches may be recommended initially, but gradual loading of the ankle encourages healing, maintains muscle strength, and helps patients regain normal walking mechanics sooner.
Pain Management
Pain following an ankle sprain can usually be managed with commonly available medications such as acetaminophen or nonsteroidal anti-inflammatory drugs (NSAIDs), including ibuprofen. When used appropriately and for a short period, these medications effectively reduce discomfort and inflammation.
Your physician will recommend the most appropriate medication based on your overall health, medical history, and the severity of your injury.
Bracing and Support
Functional ankle braces play an important role during recovery by protecting the healing ligaments while allowing controlled ankle motion. Unlike rigid casting, functional bracing encourages earlier mobility, helping patients regain strength and function more efficiently.
For mild and moderate sprains, lace-up or stirrup braces are commonly recommended throughout rehabilitation. Patients with severe Grade III injuries may require temporary immobilization in a walking boot or rigid brace for approximately 10 days before beginning a structured rehabilitation program.
Selecting the appropriate type of support depends on the severity of the injury, activity level, and individual recovery progress.
Rehabilitation and Physical Therapy
Rehabilitation is the most important component of successful ankle sprain treatment. Even when pain has improved, the injured ligaments and surrounding muscles require time to regain their strength, coordination, and ability to stabilize the ankle.
Restoring Range of Motion
Gentle stretching and mobility exercises help restore normal ankle movement while preventing stiffness that may develop after injury.
Strengthening the Supporting Muscles
Specific strengthening exercises target the muscles surrounding the ankle, particularly the peroneal muscles, which play an essential role in maintaining lateral ankle stability.
Improving Balance and Proprioception
Following a ligament injury, the body’s ability to detect joint position—known as proprioception—can become impaired. Balance training helps retrain these neuromuscular pathways, improving stability and significantly reducing the risk of future sprains.
Returning to Sports and Daily Activities
As strength, balance, and flexibility improve, rehabilitation gradually incorporates sport-specific and activity-specific exercises. This ensures patients can safely return to work, recreational activities, and competitive sports while minimizing the likelihood of reinjury.
Early mobilization combined with structured exercise therapy provides the best long-term outcomes following an ankle sprain.
When Chronic Ankle Instability Develops
Although most ankle sprains heal successfully, approximately 10% to 20% of patients continue to experience persistent symptoms despite appropriate treatment. When these symptoms last longer than three months, the condition is known as chronic ankle instability.
Patients with chronic instability often describe repeated ankle sprains, a sensation that the ankle is “giving way,” ongoing pain or swelling, difficulty walking on uneven surfaces, and reduced confidence during physical activities.
Persistent instability not only limits daily function but may also increase the risk of cartilage damage, tendon injuries, and early degenerative arthritis if left untreated.
Patients who continue to experience instability despite completing a comprehensive rehabilitation program should undergo further evaluation by a foot and ankle specialist to determine whether surgical treatment may be beneficial.
Surgical Treatment Options
Surgery is generally recommended only after conservative treatment has failed to restore ankle stability. In most cases, this decision is made after three to six months of structured rehabilitation without satisfactory improvement.
The primary objective of surgery is to restore the normal anatomy of the ankle ligaments, eliminate recurrent instability, improve function, and allow patients to return safely to their desired level of activity.
The Broström Procedure: Anatomical Ligament Repair
The Broström procedure is widely regarded as the gold standard for treating chronic lateral ankle instability. Rather than replacing the damaged ligaments, this procedure repairs and reinforces the patient’s own ligaments by reattaching them to their natural attachment sites on the bone.
Restoring the normal anatomy of the ligaments allows the ankle to regain its natural biomechanics while preserving joint motion and stability, resulting in excellent long-term functional outcomes for the majority of patients.
Minimally Invasive Broström Repair
Advances in foot and ankle surgery now allow the Broström procedure to be performed using minimally invasive techniques through very small incisions. Compared with traditional open surgery, these modern approaches minimize soft tissue disruption while achieving the same anatomical ligament repair.
The smaller incisions reduce surgical trauma and may contribute to less postoperative discomfort, quicker rehabilitation, and improved cosmetic results without compromising the strength or durability of the repair.
Benefits of Minimally Invasive Surgery
Minimally invasive ankle ligament repair has transformed the surgical treatment of chronic ankle instability. By using small incisions and modern fixation techniques, surgeons can restore ligament stability while minimizing disruption to the surrounding tissues.
Reduced Postoperative Pain
Because less soft tissue is disturbed during surgery, patients generally experience less postoperative discomfort. This can allow rehabilitation to begin more comfortably and help patients regain mobility sooner.
Lower Risk of Wound Complications
Smaller incisions are associated with a lower risk of wound-healing problems and postoperative infection. Modern minimally invasive techniques have demonstrated excellent safety profiles with fewer wound-related complications than some traditional open procedures.
Faster Recovery
By preserving healthy soft tissues, minimally invasive surgery promotes a more efficient recovery. The procedure is typically shorter, causes less surgical trauma, and often allows associated conditions—such as cartilage injuries or tendon disorders—to be treated during the same operation.
Excellent Functional Outcomes
Most patients regain stable ankle function, experience substantial pain relief, and successfully return to their previous level of activity, including recreational and competitive sports. Patient satisfaction remains consistently high.
Earlier Return to Weight-Bearing
Modern fixation techniques provide secure ligament repair that allows many patients to begin protected weight-bearing shortly after surgery. Early mobilization helps preserve muscle strength, reduces joint stiffness, and supports a smoother rehabilitation process.
Improved Cosmetic Results
Because the procedure is performed through very small incisions, postoperative scarring is typically minimal. While cosmetic appearance is not the primary goal of surgery, many patients appreciate the smaller scars associated with minimally invasive techniques.
Reduced Risk of Nerve Injury
Carefully planned minimally invasive approaches may reduce irritation of the superficial peroneal nerve, one of the nerves located along the outer aspect of the ankle. Protecting the surrounding soft tissues contributes to a safer procedure and lowers the likelihood of certain postoperative complications.
What to Expect During Treatment
Before Surgery
A thorough evaluation is essential before recommending surgical treatment. Your consultation includes a detailed medical history, physical examination, and imaging studies such as X-rays and, when necessary, magnetic resonance imaging (MRI). These investigations help confirm ligament injury, evaluate ankle stability, and identify associated conditions including cartilage damage, tendon disorders, or other problems that may require treatment during the same procedure.
During Surgery
Minimally invasive ligament repair is typically performed through several small incisions around the ankle. Specialized instruments allow the surgeon to place suture anchors into the bone and securely reattach the damaged ligaments to their natural anatomical position.
When additional problems such as cartilage injuries or tendon tears are identified, they can often be treated during the same operation, eliminating the need for additional procedures.
After Surgery
Following surgery, patients usually wear a walking boot or supportive brace to protect the repaired ligaments during the early stages of healing. Depending on the stability of the repair and the individual treatment plan, protected weight-bearing may begin soon after surgery.
Physical therapy plays a vital role in recovery by restoring ankle motion, rebuilding strength, improving balance, and gradually returning patients to normal daily activities. Most individuals resume comfortable walking within six to eight weeks, while return to sports typically occurs between three and six months, depending on the type of activity and individual progress.
Long-Term Outcomes
Modern surgical treatment for chronic ankle instability provides highly reliable long-term results. Most patients achieve lasting ankle stability, significant improvements in function, and successful return to work, recreational activities, and sports.
The likelihood of recurrent instability following anatomical ligament repair is low, and patient satisfaction remains consistently high. These excellent outcomes reflect the combination of precise surgical technique, appropriate patient selection, and commitment to a comprehensive rehabilitation program.
The Bottom Line
Most ankle sprains recover successfully with appropriate conservative treatment that includes early protection of the injured ligaments, functional rehabilitation, and progressive strengthening exercises. Completing a structured rehabilitation program is essential for restoring normal ankle function and reducing the risk of future injuries.
For patients who continue to experience instability despite comprehensive non-surgical treatment, modern ligament repair offers a safe and highly effective solution. Minimally invasive techniques provide excellent stability, reduced postoperative discomfort, faster recovery, and outstanding long-term results, allowing most patients to confidently return to the activities they enjoy.
Your Surgeon for Ankle Instability Treatment on Long Island
Kristian Efremov, MD, PhD, is a fellowship-trained orthopedic foot and ankle surgeon. He evaluates and treats ankle sprains and chronic ankle instability for patients across Nassau and Suffolk County at NYU Langone Ambulatory Care East Meadow, 1530 Front Street, Suite 200, East Meadow, NY 11554.
Options covered on this page range from bracing and rehabilitation to the minimally invasive Broström ligament repair for chronic ankle instability. The right option depends on your exam, imaging and goals.
Dr. Efremov completed his foot and ankle surgery fellowship at New England Baptist Hospital and is a Clinical Assistant Professor in the Department of Orthopedic Surgery at NYU Grossman Long Island School of Medicine.
To request an appointment, call (516) 324-7500 or read more about Dr. Efremov.
Medical Disclaimer. The information provided on this website is intended for general educational and informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare professional regarding any medical condition, symptoms, or treatment options.