Global ankle instability refers to a condition where the ankle joint is unstable in multiple directions, not just rolling outward, but also inward, during rotation and weight-bearing.
Key features:
- Lateral instability (outer side of the ankle)
- Medial instability (inner side)
- Rotational or syndesmotic instability (high ankle or twisting forces)
- Posterior/anterior instability (front-to-back)
Causes of global ankle instability include but are not limited to:
- Repeated ankle sprains that damage multiple ligaments
- Ligament laxity (loose ligaments), either from trauma or congenital conditions like Ehlers-Danlos syndrome
- Improper healing or incomplete rehab from past injuries
- Joint capsule damage or peroneal tendon issues
Symptoms can vary but most commonly patients mention having the following symptoms
- Feeling like the ankle is going to “give out”
- Persistent swelling or pain
- Difficulty walking on uneven surfaces
- Reduced athletic performance or confidence in movement
Diagnosis typically involves physical exam findings but advanced imaging like MRI and stress x-rays can also aid in the diagnosis by evaluating the integrity of the ligaments themselves.
Treatment:
- Conservative: Physical therapy focused on proprioception, strength, and balance
- Bracing or orthotics: To provide external support
- Surgical: Ligament reconstruction or repair when conservative treatment fails
Given the complex nature of global ankle instability, conservative treatment can be broken down into 3 phases.
PHASED TREATMENT APPROACH
Phase 1: Acute/Subacute Phase (Reduce Pain & Inflammation)
- R.I.C.E. (Rest, Ice, Compression, Elevation)
- Ankle brace or taping to prevent further injury
- Gentle range-of-motion exercises:
- Alphabet exercise: Trace the alphabet with your foot while seated
Phase 2: Early Rehabilitation (Restore Range of Motion & Proprioception)
1. Proprioception & Balance
- Single-leg balance (on firm surface → progress to foam pad):
- Hold 30–60 seconds, 3 sets per leg
- Eyes closed balance: Increases proprioceptive demand
- Wobble board or BOSU ball balance
2. Strengthening
- Theraband resistance exercises (3 sets of 10–15 reps):
- Plantarflexion (push down)
- Dorsiflexion (pull up)
- Inversion (pull inward)
- Eversion (pull outward)
3. Towel Scrunches or Marble Pick-Up (to strengthen foot intrinsic muscles)
Phase 3: Functional Strength & Dynamic Control
1. Dynamic Balance & Stability
- Star Excursion Balance Test (SEBT): Stand on one foot and reach the other foot in multiple directions
- Hopping drills: Forward, backward, side-to-side on one leg
- Lateral band walks (strengthens glutes & ankle stabilizers)
2. Plyometrics & Sport-Specific Training
- Box jumps
- Skater hops
- Cutting and agility drills (for athletes)
Adjunctive Treatments
- Ankle bracing or taping (during activity for support)
- Manual therapy by a physical therapist (joint mobilizations, soft tissue release)
- Neuromuscular electrical stimulation (NMES): In severe weakness
- Orthotics: Custom insoles to improve foot alignment and stability
When to Consider Surgery
If you’ve had >6 months to a year of structured rehab with:
- Recurrent instability
- Persistent functional limitation
- MRI-confirmed ligament tears
If you are experiencing ankle instability or ankle pain, it is important to get a proper evaluation and diagnosis in order to prevent future issues down the road.
Come see us at District Foot & Ankle for a proper evaluation and diagnosis so we can get you back to being a better you today!