A rolled ankle used to mean a cast and weeks of waiting. For a lateral ankle sprain (the outer ligaments), the evidence now favours moving the joint early, with support, rather than locking it still.
Why early movement beats rest
The 2021 lateral ankle sprain guideline from the Academy of Orthopaedic Physical Therapy gives its strongest grade to one instruction: brace or tape the ankle and progressively put weight through it from the first days. It cites a Cochrane review of 21 trials and 2,184 participants in which early movement with support beat immobilisation on return to sport, time back at work, swelling and satisfaction. If a severe sprain does need immobilising, the guideline suggests at most 10 days.
Exercise one: the ankle alphabet
- Sit with the foot hanging free. Using the big toe as a pen, draw the alphabet in the air, moving from the ankle, not the hip or knee.
- Keep each letter inside a comfortable range; sharp pain means stop.
- NHS leaflets suggest this kind of motion work three to four times a day early on.
Exercise two: knee to wall dorsiflexion
Dorsiflexion is the shin travelling forwards over the foot. Stand facing a wall, foot flat, and drive the knee forwards to the wall without the heel lifting. Hold briefly, repeat 10 times, then move the foot back. The same movement doubles as a test: your score is the furthest toe-to-wall distance at which the knee still reaches. Many clinics use roughly 10 cm as a benchmark, and the 2021 guideline notes a side-to-side gap over 2.5 cm predicted future sprains in firefighters.
The real goal: avoiding a second sprain
A 2023 review in the Journal of Clinical Orthopaedics and Trauma reports that up to 34 percent of people re-sprain within a year, and chronic ankle instability (a joint that keeps giving way) affects close to half of those with a previous sprain. So balance work follows mobility. In a 2009 BMJ trial of 522 athletes, an eight-week home balance board programme after usual care cut recurrences from 33 percent to 22 percent. The 2021 guideline gives bracing plus balance exercise after a first sprain its strongest grade.
What to expect, week by week
- Days 1 to 3: protect and raise the ankle, start the alphabet as pain allows.
- Weeks 1 to 2: build up weight bearing, add knee-to-wall work.
- Weeks 3 to 6: calf stretches, calf raises and single-leg balance.
- Weeks 6 to 12: hopping and direction changes, cleared by your therapist. NHS guidance puts healing at 4 to 12 weeks, with swelling possible for up to three months.
For the balance stage, see our balance exercises guide
Doing these exercises in a guided session
Knee-to-wall distance only means something if measured the same way each time. A camera-guided KineTrue session tracks ankle range each repetition and records it for your therapist, who decides when you progress.
Stop and contact a clinician if you cannot put weight through the foot after a week, if pain or swelling is getting worse, if the ankle gives way, or if you are not improving after four to six weeks.