Normal Medial Compartment Structures

Left Image: Common Flexor Tendon - Longitudinal sonogram of the medial compartment shows the origin of the common flexor tendons (yellow shade/arrows). Note the medial epicondyle (blue line) and the ulna (red line).

Right Image: Corresponding longitudinal transducer position technique.

Left Image: Ulnar Collateral Ligament - Longitudinal sonogram of the medial compartment shows the UCL (yellow shade/arrow) extending from the medial epicondyle (blue line/arrow) to the proximal ulna (red line/arrow).

Right Image: Corresponding longitudinal transducer position technique.

Ulnar Collateral Ligament - Additional longitudinal sonogram examples of the UCL.

Left Image: UCL (yellow shade/arrow) and medial distal humerus (blue line).