What does frequent knee giving-way mean?

It often suggests inadequate knee stability. Recurrent episodes may increase the risk of secondary meniscus and cartilage injury.

Can you still walk normally after an ACL tear?

Many people can walk, but may have instability, sudden weakness, or recurrent twisting injuries when turning, using stairs, or exercising.

Does rapid swelling after a knee sprain suggest an ACL injury?

It can suggest bleeding in the joint or a more serious injury. Assessment should consider the injury mechanism, examination, and MRI.