Overview
Understanding Ankle Syndesmosis Injuries
A high ankle sprain affects the syndesmosis: the ligaments that help hold the tibia and fibula together just above the ankle joint. This differs from the more familiar lateral ankle sprain, which affects ligaments on the outside of the ankle. Twisting forces during a tackle, landing or change of direction can injure this connection.
At Rehab Advantage in Castle Hill, rehabilitation is matched to ankle stability, any associated injuries and your sport. Assessment establishes whether physiotherapy-led care is appropriate or whether specialist review is needed before loading progresses.
Types
Stable and unstable syndesmosis injuries
Stable high ankle sprain
The injured ligaments still provide sufficient joint stability. Non-surgical management may be appropriate, with protection and progressive loading guided by assessment.
Unstable syndesmosis injury
Loss of stability between the tibia and fibula needs specialist assessment. Surgical stabilisation may be required; it is not a decision based on pain alone.
After surgical stabilisation
Weight-bearing, ankle movement and exercise progression follow the surgeon's instructions and account for any associated fracture or other injury.
Common presentations
- Pain above the ankle after a twisting injury
- Pain with push-off, turning or changing direction
- Difficulty walking or loading the ankle
- Swelling and reduced confidence in the ankle
Symptoms alone can't confirm a diagnosis. If you have a new injury, have it assessed by a health professional.
Rehab focus
Rebuilding ankle strength and change-of-direction capacity
- 01
Acute Repair
Establish ankle stability, protect healing tissues and follow any prescribed boot, crutch or weight-bearing restrictions.
- 02
Reloading
Gradually restore ankle movement and walking, then introduce calf, foot and lower-limb loading within agreed precautions.
- 03
Rebuilding
Progress calf strength and balance, then build hopping, running, acceleration, deceleration and cutting capacity to prepare for training when load response allows.
- 04
Return to Training
Make a graded return to training from control to chaos: progress planned drills into reactive, unpredictable sport and team situations as ankle tolerance allows.
- 05
Return to Sport
Use strength, impact tolerance and completed training alongside any surgical clearance to guide graded competition.
- 06
Prevention & Resilience
Continue ankle and calf strength, balance and change-of-direction work while monitoring training loads.
These are the six phases of our rehab framework, adapted to your injury. Phases overlap and are progressed by criteria, not fixed dates. See how our rehab programs are structured.
Objective testing
Readiness for running, cutting and contact sport
Late-stage testing checks whether the ankle can tolerate your sport's demands. Strength and movement results support clinical decisions; they do not replace assessment of joint stability or surgical clearance where required.
- Calf strength and single-leg endurance
- Ankle movement and balance under load
- Hop, landing and repeated-effort tolerance
- Running, cutting and sport-specific training response
Recovery expectations
High ankle sprain recovery: why stability matters
High ankle sprain rehabilitation typically ranges from around 6 weeks to 3-4 months. Stable injuries may progress sooner than unstable injuries or those requiring surgery. This is a guide, not a deadline: associated damage, surgical precautions and sport demands can extend recovery. Your clinician will set individual expectations and update them as loading progresses.
Typical range: Approx. 6 weeks to 3-4 months
