Final answer:
Arthrography is the diagnostic imaging of choice for assessing soft tissue injuries of the knee. It allows the visualization of soft tissue structures and can detect early degenerative changes in joint cartilage.
Step-by-step explanation:
Arthrography is the diagnostic imaging of choice for assessing soft tissue injuries of the knee. It allows the visualization of soft tissue structures such as cartilage, tendons, and ligaments by using a contrast agent that is opaque to X-rays. An arthrogram differs from a regular X-ray by showing the surface of soft tissues lining the joint in addition to joint bones, making it especially useful for detecting early degenerative changes in joint cartilage.