Answer:
The ACL is tissue that connects the thighbone to the shinbone, at the knee. Most ACL injuries occur during certain sports such as basketball, soccer, football, skiing, and tennis.
Symptoms include knee swelling, instability, and pain.
Treatment may include surgery and physical therapy.
Pain areas: in the knee
Joints: knee instability, swelling, or stiffness
Also common: bruising, limping, or pain when standing