Figure 4.Ultrasound image of the lateral compartment of the elbow that demonstrates thickening and hypoechogenicity of the conjoined tendon of the extensor muscles near the lateral epicondyle (arrow)

From

Posterior Interosseous Nerve Compression Syndrome: Imaging Findings Highlights

Jose Elmadan Albuquerque Barroso-Junior, Jovelino Coimbra-Neto, Francisco Abaete Chagas-Neto

American Journal of Medical Case Reports. 2015, 3(12), 415-418 doi:10.12691/ajmcr-3-12-9