Snapping Sartorius

Snapping Sartorius Syndrome In Knee

Clinical information

Diagnostic musculoskeletal ultrasound performing while patient pedaling Nu-Step exercise equipment. Patient experienced a painful step with knee moving from flexion to extension. The patient has a history of multiple sclerosis and hypertonicity of her lower extremities.

Brief description

Visualization of Pez Anserine Tendinosis and snapping of sartorius muscle over tibial plateau with active range of motion of the r knee while pedaling on the Nu-Step Bike.

Ultrasound Images & Clips

Short axis Image of Sartorius
Short axis Image of Sartorius
Long axis pictures of Sartorius
Long axis pictures of Sartorius
Video of Sartorius Snapping Over Tibial Plateau


Diagnostic musculoskeletal ultrasound is a valuable tool as the patient can move during the examination. This unique aspect of this imaging modality gives the examiner a window into what is happening inside the body.


  • Sex: Female
  • Age: 48
  • Body part: Right Knee