Chronic Ankle Instability
Many people experience an ankle sprain at some point, but repeated injuires or untreated sprains can lead to a condition called chronic ankle instability. Below, we answer common questions about how this condition develops and what can be done to treat it.
What is chronic ankle instability?
Chronic ankle instability is a long-term condition where the outer (lateral) side of the ankle frequently "gives out." It often develops after repeated ankle sprains or when a previous ankle injury doesn't fully heal. Over time, the supporting ligaments and muscles become weaker, increasing the risk of ongoing instability and new injuires.
Can chronic ankle instability develop gradually?
Yes. Many people develop ankle instability slowly over time. After an initial sprain, if the ankle isn't properly rehabilitated, the ligaments can remain stretched or weakened. This makes it easier to twist or roll the ankle again, creating a cycle of reinjury and instability.
What are the symptoms of chronic ankle instability?
Common symptoms include:
- Repeated ankle sprains, especially on uneven surfaces
- Persistent pain or tenderness around the ankle
- Swelling or discomfort after activity
- A feeling that your ankle is "wobbly" or unstable
- Trouble balancing or standing for long periods
How is chronic ankle instability diagnosed?
A podiatrist will perform a physical exam and may order imaging tests such as X-rays, MRI, or ultrasound to evaluate ligament damage and rule out other conditions. Your medical history, including past ankle injuires, helps determine if instability has developed over time.
Can chronic ankle instability be prevented?
Yes. The best prevention is proper care after your first ankle sprain. Following through with rehab exercises, wearing supportive footwear, and avoiding uneven terrain when possible all help strengthen the ankle and reduce the risk of chronic instability.




