Symptoms of a Torn ACL (Anterior Cruciate Ligament)
The ACL (anterior cruciate ligament) is one of the main ligaments stabilizing your knee. It connects the thigh bone to the shinbone and helps control movement. ACL injuries are common in sports involving sudden direction changes, such as soccer or basketball, or from direct impact to the knee.
Common Symptoms of an ACL Tear
- A popping sound at the moment of injury
- Severe knee pain, especially when standing
- Rapid swelling around the joint
- Instability or the knee giving way
- Difficulty walking or bearing weight
Pain is usually felt deep in the center of the knee.
Partial Tear Symptoms
A partial tear (Grade 2 injury) means the ligament is overstretched or partly torn. Symptoms may include:
- Pain and swelling
- Some knee instability
- Reduced movement or discomfort
ACL Strain Symptoms
A strain (Grade 1 injury) is the mildest form:
- Ligament stretched but not torn
- Mild pain
- Minimal swelling
- Knee usually remains stable
Diagnosis
Doctors may evaluate your knee using:
- Physical exams (Lachman or anterior drawer test)
- X-ray (to rule out fractures)
- MRI scan (to assess ligament damage)
- Arthroscopy in certain cases
When to Seek Medical Help
Consult a doctor immediately if you:
- Hear a pop in your knee
- Experience severe pain or swelling
- Cannot walk or bear weight
Early evaluation prevents worsening injury.
Treatment Options
- Mild injuries: Rest, ice, elevation, brace
- Moderate to severe tears: Surgery may be required
- Recovery: Physical therapy to restore strength and mobility
Summary
ACL injuries range from mild strains to complete tears. Watch for pain, swelling, and instability after a knee injury. Prompt medical assessment helps ensure proper recovery and prevents long-term damage.
Disclaimer
This content is for informational purposes only and is not a substitute for professional medical advice. Always consult a healthcare professional for diagnosis or treatment.
