The first step for any treatment is proper diagnosis. In case, of ACL treatment a physical examination is conducted by doctor to check for swelling, tenderness, and assess the functionality of your knee joint. Subsequently, he recommends imaging tests; X-rays to rule out bone fractures. Magnetic resonance imaging (MRI) gives comprehensive information about the ACL and other knee tissues. Ultrasound is a medical test that can visualize ligaments, tendons, and muscles in the knee.