Chronic Ankle Instability and Physiotherapy Treatment
October 10, 2026
Have you ever twisted your ankle, taken some rest, and felt better, but after a few weeks, the same ankle started giving way again? Some patients tell me, “Doctor, I can walk normally, but I don’t feel confident when walking on uneven ground.” Others complain that their ankle feels weak when climbing stairs, running, or changing direction.
When I hear these complaints, one condition I consider is chronic ankle instability. It commonly develops after repeated ankle sprains or an ankle injury that has not fully recovered. The pain may settle, but the ankle can still have problems with strength, balance, and movement control.
The good news is that chronic ankle instability physiotherapy can help improve ankle stability, restore movement control, and reduce the risk of repeated sprains.
If you have recently twisted your ankle, read our guide to ankle sprain physiotherapy and rehabilitation to understand the recovery process after an ankle injury.
What Is Chronic Ankle Instability?
Chronic ankle instability is a condition in which your ankle repeatedly feels unstable or gives way during walking, exercise, or other daily activities. It often begins after an ankle sprain, especially when the ligaments remain stretched or the muscles and balance system have not recovered properly.
For example, you may walk comfortably on a flat surface but feel your ankle turn when stepping onto uneven ground. This happens because the ankle may not be controlling your body weight as effectively as it should.
According to the clinical practice guideline on lateral ankle ligament sprains, persistent ankle instability can involve problems with balance, movement control, strength, and functional performance.
Understanding the Anatomy of the Ankle
Your ankle is the joint connecting the lower leg to the foot. It allows you to move your foot up and down while supporting your body during walking, running, and jumping.
Three ligaments on the outer side of the ankle provide important support: the anterior talofibular ligament (ATFL), calcaneofibular ligament (CFL), and posterior talofibular ligament (PTFL). The ATFL is the ligament most commonly injured during a typical ankle sprain.
The muscles around the ankle, particularly the fibularis (peroneal) muscles, help control foot position and prevent excessive inward rolling. Your balance system, known as proprioception, also helps your body recognize the position of the ankle and respond when your foot lands awkwardly.
When these structures do not work together properly, your ankle may continue to feel unstable even after the initial pain has disappeared.
What Are the Symptoms of Chronic Ankle Instability?
When patients come to me with suspected chronic ankle instability, they often describe:
- Repeated sprains of the same ankle.
- A feeling that the ankle suddenly gives way.
- Pain or swelling around the outer ankle.
- Difficulty walking on uneven surfaces.
- Weakness during running, jumping, or climbing stairs.
- Poor balance when standing on the affected leg.
- Reduced confidence when participating in sports or physical activities.
Some patients have very little pain but still feel that their ankle cannot support them confidently. That is why I do not assess this condition by looking at pain alone.
How Is Chronic Ankle Instability Assessed?
Before starting treatment, I ask about previous ankle injuries, the number of sprains, and the activities that trigger instability. Then I examine the ankle to understand what is causing the problem.
The assessment may include:
Anterior Drawer Test: This test helps assess the stability of the ATFL. The physiotherapist carefully moves the ankle and checks for excessive forward movement of the talus.
Talar Tilt Test: This test helps assess the lateral ankle ligaments by checking whether the ankle moves excessively when the examiner applies a controlled tilting force.
Single-Leg Balance Test: I ask you to stand on the affected leg and observe how well you maintain your balance. Difficulty controlling the ankle may indicate a balance or proprioception problem.
Range of Motion and Muscle Strength Testing: I assess ankle movement, calf strength, and the strength of the muscles that turn the foot outward.
For athletes, functional tests such as hopping and the Star Excursion Balance Test may also be used when appropriate. A clinician may use validated questionnaires, such as the Cumberland Ankle Instability Tool, to understand the patient’s perceived instability.
These tests help me decide whether your treatment should focus more on ligament stability, muscle strength, balance, or a combination of these problems.
Chronic Ankle Instability Physiotherapy Treatment Protocol
My goal is not simply to reduce your pain. I want your ankle to become strong enough to support you during daily activities and respond properly when your foot lands on an uneven surface.
Treatment is usually divided into phases according to your symptoms, examination findings, and progress. The exercises below are examples of rehabilitation activities; the appropriate level and intensity should be determined by a qualified physiotherapist.
Phase 1: Pain Control and Mobility
If your ankle is painful or swollen, I first recommend modifying activities that aggravate it. We may use gentle ankle movements to prevent stiffness and maintain mobility.
Ankle Pumps: Move your foot toward your shin and then point your toes away. Perform 10–15 repetitions, within a comfortable range.
Ankle Circles: Move your foot slowly in both directions, completing 10 circles each way.
An ice pack wrapped in a towel may help relieve pain and swelling after activity. A suitable ankle brace may also provide support when walking or performing higher-risk activities, depending on your needs.
What About TENS and a Heating Pad?
TENS may provide temporary pain relief when pain is present, but it does not restore ligament stability or correct poor balance. A heating pad is not a routine treatment for chronic ankle instability. If your ankle is swollen or irritated after an injury, heat may worsen the swelling.
Heat may sometimes be useful for stiffness when there is no active swelling, but it is not essential. The main focus should remain on addressing the underlying movement and stability problems.
Phase 2: Muscle Strengthening
Once movement is comfortable, we begin strengthening the muscles that support the ankle.
Resistance Band Eversion: Sit with your leg extended and a resistance band around your foot. Turn your foot outward against the resistance, then return slowly. Start with 2 sets of 10–15 repetitions if tolerated.
Calf Raises: Stand near a wall for support, lift your heels off the floor, and lower them slowly. Start with 2 sets of 10 repetitions.
These exercises improve the muscles’ ability to control the ankle during walking and other activities. The resistance should be increased only when you can perform the movements with good technique and without worsening your symptoms.
Phase 3: Balance and Proprioception Training
This phase is especially important because many patients have adequate muscle strength but still experience repeated ankle instability.
Single-Leg Standing: Stand on the affected leg near a stable support. Maintain your balance for 20–30 seconds and repeat three times, if safe and comfortable.
Single-Leg Reaching: Stand on the affected leg and reach the opposite foot forward, sideways, and backward without losing control of your balance. Use a stable support if necessary.
These exercises help your muscles and nervous system work together more effectively. Start on a firm surface and use support if needed to prevent falls.
The JOSPT clinical practice guideline for lateral ankle ligament sprains supports proprioceptive and neuromuscular exercises to improve dynamic balance and perceived ankle stability in people with chronic ankle instability.
Phase 4: Functional Training and Return to Sports
When your strength and balance improve, we introduce exercises that prepare your ankle for more demanding movements.
These may include step-ups, controlled hopping, jogging, landing exercises, and changes of direction. The exercises depend on whether your goal is to walk comfortably or return to a sport such as football or badminton.
I do not recommend returning to competitive sports just because the pain has disappeared. Your ankle should also demonstrate good strength, balance, and control during the movements required for that sport.
Return-to-sport decisions should consider functional performance, confidence, symptoms, and the demands of the activity.
Home Advice and Prevention
I usually advise patients to continue their strengthening and balance exercises even after they start feeling better. Wear suitable footwear, be careful on uneven surfaces, and consider an ankle brace during higher-risk sports if you have a history of repeated sprains.
A brace should not replace rehabilitation. Exercises that improve balance, strength, and neuromuscular control remain important for addressing persistent instability.
If your ankle keeps giving way despite regular physiotherapy, further medical assessment may be needed to check for persistent ligament laxity, tendon injury, or cartilage damage.
How Long Does Recovery From Chronic Ankle Instability Take?
Many people improve with a consistent physiotherapy program, but there is no single recovery timeline that applies to everyone.
Recovery depends on the severity of the original injury, the number of previous sprains, the degree of ligament laxity, muscle strength, balance, and the activities you want to return to.
If you experience persistent pain, repeated swelling, or frequent episodes of giving way, do not keep ignoring the problem. A proper assessment can help identify what is preventing your ankle from recovering.
Frequently Asked Questions
Can physiotherapy help chronic ankle instability?
Yes. Physiotherapy can help improve ankle strength, balance, proprioception, and movement control. Treatment should be based on the patient’s assessment findings and functional goals.
What are the best exercises for chronic ankle instability?
Commonly used exercises include resistance band eversion, calf raises, single-leg standing, controlled reaching exercises, and progressive functional training. The best combination depends on your strength, balance, symptoms, and activity level.
Why does my ankle keep giving way after a sprain?
Repeated giving-way episodes may be related to ligament laxity, reduced muscle strength, impaired proprioception, or poor neuromuscular control. Persistent symptoms may also indicate another injury that needs assessment.
Should I wear an ankle brace during exercise?
An ankle brace may provide additional support during selected activities, particularly sports with a higher risk of ankle sprains. However, a brace should not be used as the only treatment for chronic ankle instability. Strength and balance rehabilitation remain important.
When should I see a physiotherapist for ankle instability?
Consider an assessment if your ankle repeatedly gives way, you have recurring sprains, or you struggle with walking, stairs, running, or sports. Seek prompt medical evaluation after a new injury if you cannot bear weight, have severe pain, significant swelling, deformity, or other concerning symptoms.
Final Thoughts
Chronic ankle instability can make even ordinary walking uncomfortable because you never feel completely sure that your ankle will support you. I often explain to patients that the disappearance of pain does not always mean the ankle has recovered fully.
With the right physiotherapy exercises, we can work on muscle strength, balance, coordination, and the control needed for everyday movement. TENS or other devices may help with pain in selected cases, but strengthening and balance training remain the main parts of rehabilitation.
The aim is not just to help you walk without pain. It is to help you trust your ankle again, without constantly worrying that it will give way.
Medical Disclaimer
This article is for educational purposes and should not replace professional medical advice, diagnosis, or individualized treatment. Consult a qualified healthcare professional for assessment and a rehabilitation plan suited to your condition.
About the Author
Dr Areej Nadeem PT
College of Physiotherapy
JPMC Karachi