01What is the ACL and what does it do?+
The anterior cruciate ligament is one of the main stabilising ligaments inside the knee. It helps control forward movement of the tibia relative to the femur and contributes to rotational stability.
02What are common symptoms of an ACL tear?+
A pop or giving-way sensation may occur at the time of injury, followed by pain, swelling, reduced motion and a feeling that the knee is unstable. Symptoms vary and associated injuries can change the presentation.
03Does every ACL tear need surgery?+
No. Treatment is individualised. Rehabilitation may be appropriate for selected stable knees and lower-demand activity, while reconstruction is more often discussed when functional instability persists, pivoting demands are high or associated injuries change the decision.
04Do I always need an MRI?+
No. History and physical examination are central to diagnosis. MRI is useful for defining the ACL injury and looking for associated meniscus, cartilage or other ligament injuries when that information will change management.
05Can I walk with an ACL tear?+
Some people can walk after an ACL tear once pain and swelling settle, while others feel unstable. The ability to walk does not by itself show whether the ACL is intact or whether the knee is safe for pivoting activity.
06When is ACL reconstruction considered?+
Reconstruction may be considered when the knee remains functionally unstable, when sport or work requires pivoting and cutting, or when associated injuries make operative treatment more appropriate. The decision is individual.
07How is return to sport decided?+
Return to sport should consider symptoms, swelling, range of motion, strength, balance, movement control and functional performance rather than relying on time alone.