How to Strengthen a Sprained Ankle

An ankle sprain occurs when the strong ligaments supporting the ankle joint are stretched or torn, typically due to the foot twisting inward. This common injury damages the connective tissues that provide stability to the joint. Successfully recovering from a sprained ankle requires a structured approach that moves from initial protection to progressive exercise. The ultimate goal is to strengthen the joint and surrounding muscles to prevent future sprains and chronic instability.

Understanding the Injury and Initial Protection

A sprain is specifically an injury to a ligament, which connects one bone to another, unlike a strain, which involves a muscle or tendon. Most ankle sprains affect the lateral ligaments on the outside of the ankle. The immediate response focuses on managing the acute symptoms of pain and swelling.

The widely recognized R.I.C.E. protocol—Rest, Ice, Compression, and Elevation—is the standard initial treatment for the first 48 to 72 hours. Avoiding weight-bearing activities allows the damaged tissue to begin its repair process without additional stress. Applying ice for 15 to 20 minutes at a time, every few hours, helps control the inflammatory response and reduces pain. Compression with an elastic bandage further minimizes swelling, and keeping the ankle elevated above the heart uses gravity to drain excess fluid from the injured area.

Restoring Range of Motion and Flexibility

Once the initial pain and swelling have significantly decreased, typically within a few days, the focus shifts to gentle, active rehabilitation. This first phase aims to restore the ankle’s full range of motion without introducing any significant load or resistance. Starting with low-impact movements prevents the formation of excessive scar tissue and stiffness, which could limit long-term function.

A simple and effective method is “Ankle Alphabet Tracing,” where you sit with your leg extended and use your big toe to slowly “write” each letter of the alphabet in the air. This non-weight-bearing exercise encourages movement in all directions, mobilizing the joint gently. Another early exercise involves using a towel looped around the ball of the foot to perform a calf stretch, pulling the toes gently toward the body. These movements are performed slowly and deliberately, stopping immediately if any sharp pain is felt.

Targeted Strength and Proprioception Exercises

The next phase of recovery involves rebuilding muscle strength and retraining the body’s sense of joint position, known as proprioception. Proprioception is the unconscious awareness of where your joint is in space, and it is often compromised after a ligament injury, making re-injury highly likely. Strengthening the muscles surrounding the ankle acts as a dynamic stabilizer to support the healing ligaments.

Resistance band exercises are effective for targeting the four main movements of the ankle: dorsiflexion (pulling the foot up), plantarflexion (pointing the foot down), inversion (turning the sole inward), and eversion (turning the sole outward). Eversion is particularly important, as the muscles responsible for this movement—the peroneal muscles—are the primary stabilizers against the common inward-twisting sprain.

To perform eversion, a resistance band is looped around the foot and anchored, and the foot is slowly pushed outward against the tension. For dorsiflexion, the band is anchored in front, and the foot is pulled toward the shin against the resistance. Plantarflexion involves pushing the foot down against a band anchored behind the foot. These exercises should be performed in sets of 10 to 15 repetitions, focusing on slow, controlled movement; progression involves increasing the band’s resistance level or the number of sets.

Proprioception training begins with a simple single-leg stance, which trains the small muscles around the ankle to make continuous, subtle adjustments to maintain balance. Start by standing on the injured leg, using a countertop or chair for light support, and gradually increase the hold time, aiming for 30 to 60 seconds. Once this is mastered on a firm floor, the challenge is progressed by standing on an unstable surface, such as a folded towel, a pillow, or a foam mat.

Further balance challenges include standing on one leg while performing “clock touches,” where the non-standing foot taps designated points on the floor without putting weight on it. This dynamic exercise forces the standing ankle to continually stabilize itself against movement. Integrating these strength and balance exercises into a routine—aiming for three to five sessions per week—is necessary to develop the robust stability needed for daily activities and sport.

Long-Term Maintenance and Support

Preventing future ankle sprains requires treating rehabilitation not as a temporary fix but as a long-term commitment to joint health. The peroneal muscles, which were strengthened during the resistance phase, must continue to be exercised to maintain their protective strength. Continuing single-leg balance work, even after all symptoms have vanished, is the most straightforward way to keep the ankle’s stabilizing reflexes sharp.

For individuals returning to high-impact sports or activities involving jumping, cutting, or running on uneven terrain, external support may be beneficial. Wearing a semi-rigid ankle brace or using athletic taping during these activities provides an extra layer of mechanical support, reducing the risk of an inversion injury. Choosing supportive footwear with a firm heel counter and a rigid sole can also contribute to overall stability for daily walking and light exercise.

It is important to recognize warning signs indicating that the ankle has not fully recovered or that a more serious issue exists. Persistent pain, recurrent swelling that does not resolve, or a feeling of the ankle “giving way” during normal activity suggests chronic ankle instability or a more complex underlying problem. In these cases, consultation with a medical professional is necessary to determine if advanced interventions, such as prolonged physical therapy or surgical evaluation, are required to fully stabilize the joint.