Ultrasound of the knee allows high-resolution imaging of superficial knee anatomy while simultaneously allowing dynamic evaluation of some of the tendons and ligaments. Knee ultrasound is somewhat limited compared with ultrasound examinations of other joints because the cruciate ligaments and the entirety of the meniscus are usually difficult to visualize.
Ultrasound can be useful to visualize superficial soft tissue structures surrounding the knee. One great advantage it has over other imaging modalities is its dynamic use. Observing joint surfaces moving and correlating sonographic findings with patient symptoms can be very helpful.