Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooChronic Ankle Instability

Ankle & Lower Leg

What It Is

Line drawing of the ankle from the front and from the side, showing the shin bone and fibula sitting over the ankle and heel bones, with the ligaments that bind them together.
These are the ligaments that stretch with each sprain — and why the muscles around them end up working harder afterwards.

Chronic ankle instability is characterised by the ankle giving way on a recurring basis. The condition often develops after someone suffers repeated ankle sprains (Zhang et al., 2026). Most of the time, the giving way occurs when walking or doing other activities, but it can happen even when standing still. A number of athletes suffer from the condition. People who have chronic ankle instability often complain about:

  • An ankle that repeatedly turns, especially on an uneven surface or when playing sports
  • Ongoing swelling and discomfort
  • Tenderness or pain, usually along the outside of the ankle
  • An unstable or wobbly feeling in the ankle
  • Difficulty balancing on one leg

Chronic Ankle Instability Anatomy

Three bones make up the ankle joint: the fibula (the outer bone of the lower leg), the tibia (shinbone) and the talus (the bone that sits below the ends of the tibia and fibula). Ligaments hold these bones together. On the inside of the ankle, the deltoid ligament holds the talus to the shinbone. On the outside of the ankle, the talofibular ligaments connect the fibula to the talus, and the calcaneofibular ligament connects the fibula to the heel bone (calcaneus) (American Academy of Orthopaedic Surgeons, n.d.). There are also muscles surrounding the ankle that help to move it and let you jump and run.

Chronic ankle instability almost always follows an ankle sprain. Once you have sprained your ankle, you are more likely to sprain it again (American Academy of Orthopaedic Surgeons, n.d.), and research suggests that around 36 to 40 percent of ankle sprains go on to develop chronic instability (Zhang et al., 2026). When you sprain your ankle, the ligament is stretched or torn, and in some cases it does not heal properly. This leaves the ankle less well supported and more prone to rolling, turning and spraining again. Not completing your rehabilitation exercises is the most common cause of chronic ankle instability after a sprain (American Academy of Orthopaedic Surgeons, n.d.).

Ankle sprains are common in sports that involve cutting (quick changes of direction) or jumping, such as basketball, tennis, football, soccer and trail running (American Academy of Orthopaedic Surgeons, n.d.).

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

Book a session

At Fearless Heart, 25 Dupont St E in Uptown Waterloo, or as a home visit across Kitchener–Waterloo.