Common Symptoms
- A pop or giving-way sensation during the injury
- Rapid knee swelling
- Instability when turning, landing or changing direction
- Reduced confidence during sport or demanding activity
What Causes It?
- Sudden stopping or changing direction
- An awkward landing or twisting injury
- Contact during ball sports
- Skiing, running or jumping injuries
How Is It Diagnosed?
The doctor first reviews your symptoms, any injury and relevant medical history, then performs a clinical examination and arranges investigations only when appropriate. Not every patient needs imaging.
- Review of the injury mechanism and episodes of instability
- Clinical stability tests, including the Lachman test when appropriate
- Assessment for associated meniscus, cartilage or other ligament injury
- MRI when it will help define associated injury or guide treatment planning
Treatment Options
Treatment depends on the underlying cause, severity of symptoms, impact on function and relevant examination or investigation findings.
- Early swelling control and restoration of movement
- Physiotherapy to rebuild strength, balance and movement control
- Non-operative management for selected patients according to instability, activity needs and goals
- ACL reconstruction when recurrent instability, associated injury or activity demands make surgery appropriate
- Milestone-based testing before return to higher-demand activity or sport
When Should You Seek Medical Attention?
Seek prompt medical assessment, or urgent care according to severity, if any of the following occurs:
- Obvious deformity or complete inability to bear weight after injury
- Rapid swelling, severe pain or inability to straighten the knee
- Foot numbness, coldness or a marked change in sensation
- A sharp deterioration after a further fall or twisting injury
Recovery and Daily Activities
Rehabilitation progresses through swelling control, restoration of movement, strength and movement-quality training, followed by running, jumping and change-of-direction tasks when appropriate. Return to sport is based on clinical and functional milestones, not time alone.
Activities should be progressed according to symptoms, function and response to treatment. Ask a doctor or physiotherapist for advice if symptoms persist or affect work or daily activities.
Dr. Yuen Explains
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Sports Injuries: Symptoms, Treatment and Rehabilitation
Dr Yuen Chi Pan explains the key symptoms, assessment considerations and treatment or rehabilitation principles related to sports injuries: symptoms, treatment and rehabilitation.
Watch VideoFrequently Asked Questions
Does every ACL injury require surgery?
No. Treatment depends on knee instability, associated injuries, work or sporting demands, rehabilitation goals and individual circumstances.
When can physiotherapy begin?
The acute injury should first be assessed for swelling, movement and associated injury. Some patients may begin pre-operative or non-operative rehabilitation on medical advice.
What is the role of MRI?
MRI may help assess the ACL, meniscus, cartilage and other soft tissues when the findings will influence treatment planning. It is not always required immediately.
Is return to sport based only on time after surgery?
No. Swelling, range of movement, strength, balance, movement quality and functional testing are also considered.
Still Unsure What May Be Causing Your Symptoms?
Similar symptoms may have different causes. If pain persists, affects activity or progressively worsens, consider an individual medical assessment.