What Is a Sprained Ankle?
A sprained ankle occurs when one or more ligaments (strong bands of fibrous tissue) that support the ankle joint are stretched or torn, usually after the foot twists or rolls beyond its normal range of motion.
The severity of an ankle sprain depends on the extent of ligament damage and can range from a mild overstretching to a complete tear. While ankle sprains are among the most common sports injuries, they can also occur during everyday activities such as walking on uneven surfaces, misstepping, or wearing unstable footwear. Prompt assessment and proper treatment are important for supporting healing and reducing the risk of further injury.
Types of Sprained Ankles
Severity of Sprained Ankle
Sprained ankles are classified into three grades based on the extent of ligament damage, helping determine the appropriate treatment and expected recovery time.
| Grade | Description |
|---|---|
| Grade I (Mild Sprain) | A Grade I sprain involves mild stretching or microscopic tearing of the ligament. It usually causes slight pain, tenderness, and swelling, but the ankle remains stable and can often still bear weight. |
| Grade II (Moderate Sprain) | A Grade II sprain is a partial tear of the ligament, resulting in more noticeable ankle pain and swelling, bruising, and reduced ankle stability. Walking may be difficult, and recovery generally takes longer than a mild sprain. |
| Grade III (Severe Sprain) | A Grade III sprain is a complete tear of the ligament, leading to significant swelling, severe pain, bruising, instability, and difficulty bearing weight. This type of injury often requires a longer rehabilitation period and, in some cases, surgical evaluation. |
Ankle Injury Location
Ankle sprains can affect different ligaments depending on how the injury occurred, with each type presenting distinct symptoms and recovery considerations.
| Location | Description |
|---|---|
| Lateral Ankle Sprain | Most ankle sprains are lateral ankle sprains, which occur during an inversion injury, when the foot rolls inward and stretches or tears the ligaments on the outside of the ankle. The anterior talofibular ligament (ATFL) is the most commonly injured ligament, followed by the calcaneofibular ligament (CFL). In more severe cases, the posterior talofibular ligament (PTFL) may also be affected. |
| Medial Ankle Sprain | A medial ankle sprain affects the deltoid ligament, a strong ligament complex located on the inside of the ankle. This type of sprain is less common because the deltoid ligament is stronger and typically requires greater force to sustain the injury. |
| High Ankle (Syndesmotic) Sprain | A high ankle sprain involves the syndesmotic ligaments, which connect the tibia and fibula above the ankle joint. It often occurs during twisting injuries and generally takes longer to heal than a typical ankle sprain. |
How Are Sprained Ankles Diagnosed?
The diagnosis of a sprained ankle typically begins with a clinical assessment conducted by a podiatrist or healthcare professional. During the assessment, the specialist will evaluate the severity of the injury by understanding how the ankle was injured, identifying symptoms, and examining the affected area.
This helps determine which ligaments may be affected and whether additional tests are needed to rule out fractures or other underlying conditions.
Medical History
Your podiatrist will ask about how the injury occurred, the symptoms you are experiencing, and any previous ankle injuries.
Physical Examination
A physical exam involves assessing the ankle for swelling, bruising, tenderness, range of motion, and areas of pain.
Specialised Stress Tests
Specialised stress tests may be performed by gently applying pressure or movement to the ankle joint.
Imaging Tests (If Required)
If more serious injuries are suspected, imaging tests such as X-rays, ultrasound scans, or MRI scans may be recommended.
When Should You Seek a Podiatrist for Sprained Ankle?
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While mild ankle sprains may improve with rest and self-care, you should seek medical attention if you experience severe swelling, significant pain with weight-bearing, difficulty walking, limited ankle movement, repeated ankle sprains, or symptoms that do not improve after a few days of home care.
Early assessment allows your podiatrist to identify severe injuries and develop a personalised management plan, including rehabilitation exercises to reduce pain and support the healing process.
Personalised Sprained Ankle Treatment Options
Super Inductive System (SIS)
Super Inductive System (SIS) is a non-invasive therapy that uses electromagnetic fields to stimulate tissues, helping support pain relief, muscle activation, and recovery in suitable cases. It may be used as part of a broader rehabilitation plan to assist with restoring movement and improving function after injury.
Shockwave Therapy
Shockwave therapy uses acoustic waves to target affected tissues, promoting healing by stimulating blood flow and supporting the body’s natural recovery process. It may help manage persistent pain or soft-tissue injuries, particularly when symptoms do not improve with conventional treatments.
Orthotics
Custom orthotics may be recommended to improve foot alignment, support the ankle, and correct biomechanical issues that contribute to pain or repeated injuries. By improving how pressure is distributed during movement, orthotics can help enhance foot function, provide additional support, and reduce strain on the ankle.
Biomechanical correction
Biomechanical correction focuses on identifying and addressing movement patterns, foot function, and alignment issues that may contribute to ankle instability or recurring sprains. Treatment may involve a combination of rehabilitation exercises, footwear advice, and supportive measures to improve overall lower-limb function.
Conservative Treatment Options
Conservative treatment focuses on relieving pain, protecting the injured ankle, and promoting recovery without surgery. It helps reduce swelling and discomfort, while rehabilitation exercises can be introduced as pain improves to restore strength and stability.
Pain Management
For many common injuries, pain management may be recommended to relieve discomfort and support recovery. This includes modifying everyday activities, using an ice pack, taking over-the-counter pain relievers, and keeping your ankle elevated to reduce swelling.
Depending on the severity and stage of recovery, your podiatrist may also recommend additional therapies where clinically appropriate.
Sports Taping
Sports taping provides additional support by limiting excessive ankle movement while allowing functional mobility. It may be recommended during recovery or when returning to physical activity to reduce the risk of re-injury.
Ankle Bracing and Support
Ankle braces or supportive devices help stabilise the joint, reduce strain on the injured ligaments, and protect the ankle during the healing process, particularly when returning to daily activities or sports.
Rehabilitation and Physical Therapy
A personalised rehabilitation programme, guided by a podiatrist or physical therapist where appropriate, may include strengthening, balance, range of motion, and proprioception exercises. These exercises help restore ankle function, improve stability, and reduce the risk of future sprains.
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