Radial collateral ligament pathology

The same as ulnar collateral ligament (sprain and tear which could be partial or complete).

Normal anatomy: T2-weighted fat-suppressed coronal (C), T1-weighted coronal (D), and T2-weighted axial (E) images demonstrate the common extensor tendon (arrows) as low signal intensity on T2 and T1-weighted images. The radial collateral ligament (arrowheads) is seen deep to the common extensor tendon.

Lateral collateral ligament injury